mirror of https://github.com/citusdata/citus.git
593 lines
20 KiB
Plaintext
593 lines
20 KiB
Plaintext
SET citus.next_shard_id TO 1220000;
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-- Tests functions related to cluster membership
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-- before starting the test, lets try to create reference table and see a
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-- meaningful error
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CREATE TABLE test_reference_table (y int primary key, name text);
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SELECT create_reference_table('test_reference_table');
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ERROR: cannot create reference table "test_reference_table"
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DETAIL: There are no active worker nodes.
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-- add the nodes to the cluster
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SELECT 1 FROM master_add_node('localhost', :worker_1_port);
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?column?
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----------
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1
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(1 row)
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SELECT 1 FROM master_add_node('localhost', :worker_2_port);
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?column?
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----------
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1
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(1 row)
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-- get the active nodes
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SELECT master_get_active_worker_nodes();
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master_get_active_worker_nodes
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--------------------------------
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(localhost,57638)
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(localhost,57637)
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(2 rows)
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-- try to add a node that is already in the cluster
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SELECT nodeid, groupid FROM master_add_node('localhost', :worker_1_port);
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nodeid | groupid
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--------+---------
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1 | 1
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(1 row)
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-- get the active nodes
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SELECT master_get_active_worker_nodes();
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master_get_active_worker_nodes
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--------------------------------
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(localhost,57638)
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(localhost,57637)
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(2 rows)
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-- try to remove a node (with no placements)
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SELECT master_remove_node('localhost', :worker_2_port);
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master_remove_node
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--------------------
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(1 row)
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-- verify that the node has been deleted
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SELECT master_get_active_worker_nodes();
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master_get_active_worker_nodes
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--------------------------------
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(localhost,57637)
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(1 row)
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-- try to disable a node with no placements see that node is removed
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SELECT 1 FROM master_add_node('localhost', :worker_2_port);
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?column?
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----------
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1
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(1 row)
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SELECT master_disable_node('localhost', :worker_2_port);
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master_disable_node
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---------------------
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(1 row)
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SELECT master_get_active_worker_nodes();
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master_get_active_worker_nodes
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--------------------------------
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(localhost,57637)
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(1 row)
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-- add some shard placements to the cluster
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SELECT isactive FROM master_activate_node('localhost', :worker_2_port);
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isactive
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----------
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t
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(1 row)
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CREATE TABLE cluster_management_test (col_1 text, col_2 int);
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SELECT master_create_distributed_table('cluster_management_test', 'col_1', 'hash');
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master_create_distributed_table
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---------------------------------
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(1 row)
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SELECT master_create_worker_shards('cluster_management_test', 16, 1);
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master_create_worker_shards
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-----------------------------
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(1 row)
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-- see that there are some active placements in the candidate node
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SELECT shardid, shardstate, nodename, nodeport FROM pg_dist_shard_placement WHERE nodeport=:worker_2_port;
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shardid | shardstate | nodename | nodeport
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---------+------------+-----------+----------
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1220001 | 1 | localhost | 57638
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1220003 | 1 | localhost | 57638
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1220005 | 1 | localhost | 57638
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1220007 | 1 | localhost | 57638
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1220009 | 1 | localhost | 57638
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1220011 | 1 | localhost | 57638
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1220013 | 1 | localhost | 57638
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1220015 | 1 | localhost | 57638
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(8 rows)
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-- try to remove a node with active placements and see that node removal is failed
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SELECT master_remove_node('localhost', :worker_2_port);
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ERROR: you cannot remove the primary node of a node group which has shard placements
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SELECT master_get_active_worker_nodes();
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master_get_active_worker_nodes
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--------------------------------
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(localhost,57638)
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(localhost,57637)
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(2 rows)
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-- insert a row so that master_disable_node() exercises closing connections
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INSERT INTO test_reference_table VALUES (1, '1');
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-- try to disable a node with active placements see that node is removed
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-- observe that a notification is displayed
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SELECT master_disable_node('localhost', :worker_2_port);
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NOTICE: Node localhost:57638 has active shard placements. Some queries may fail after this operation. Use SELECT master_activate_node('localhost', 57638) to activate this node back.
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master_disable_node
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---------------------
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(1 row)
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SELECT master_get_active_worker_nodes();
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master_get_active_worker_nodes
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--------------------------------
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(localhost,57637)
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(1 row)
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-- try to disable a node which does not exist and see that an error is thrown
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SELECT master_disable_node('localhost.noexist', 2345);
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ERROR: node at "localhost.noexist:2345" does not exist
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-- restore the node for next tests
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SELECT isactive FROM master_activate_node('localhost', :worker_2_port);
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isactive
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----------
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t
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(1 row)
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-- try to remove a node with active placements and see that node removal is failed
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SELECT master_remove_node('localhost', :worker_2_port);
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ERROR: you cannot remove the primary node of a node group which has shard placements
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-- mark all placements in the candidate node as inactive
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SELECT groupid AS worker_2_group FROM pg_dist_node WHERE nodeport=:worker_2_port \gset
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UPDATE pg_dist_placement SET shardstate=3 WHERE groupid=:worker_2_group;
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SELECT shardid, shardstate, nodename, nodeport FROM pg_dist_shard_placement WHERE nodeport=:worker_2_port;
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shardid | shardstate | nodename | nodeport
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---------+------------+-----------+----------
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1220001 | 3 | localhost | 57638
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1220003 | 3 | localhost | 57638
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1220005 | 3 | localhost | 57638
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1220007 | 3 | localhost | 57638
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1220009 | 3 | localhost | 57638
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1220011 | 3 | localhost | 57638
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1220013 | 3 | localhost | 57638
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1220015 | 3 | localhost | 57638
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(8 rows)
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-- try to remove a node with only inactive placements and see that removal still fails
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SELECT master_remove_node('localhost', :worker_2_port);
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ERROR: you cannot remove the primary node of a node group which has shard placements
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SELECT master_get_active_worker_nodes();
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master_get_active_worker_nodes
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--------------------------------
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(localhost,57638)
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(localhost,57637)
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(2 rows)
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-- clean-up
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SELECT 1 FROM master_add_node('localhost', :worker_2_port);
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?column?
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----------
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1
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(1 row)
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UPDATE pg_dist_placement SET shardstate=1 WHERE groupid=:worker_2_group;
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-- when there is no primary we should get a pretty error
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UPDATE pg_dist_node SET noderole = 'secondary' WHERE nodeport=:worker_2_port;
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SELECT * FROM cluster_management_test;
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ERROR: node group 3 does not have a primary node
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-- when there is no node at all in the group we should get a different error
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DELETE FROM pg_dist_node WHERE nodeport=:worker_2_port;
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SELECT * FROM cluster_management_test;
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ERROR: there is a shard placement in node group 3 but there are no nodes in that group
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-- clean-up
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SELECT groupid as new_group FROM master_add_node('localhost', :worker_2_port) \gset
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UPDATE pg_dist_placement SET groupid = :new_group WHERE groupid = :worker_2_group;
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-- test that you are allowed to remove secondary nodes even if there are placements
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SELECT 1 FROM master_add_node('localhost', 9990, groupid => :new_group, noderole => 'secondary');
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?column?
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----------
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1
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(1 row)
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SELECT master_remove_node('localhost', :worker_2_port);
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ERROR: you cannot remove the primary node of a node group which has shard placements
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SELECT master_remove_node('localhost', 9990);
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master_remove_node
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--------------------
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(1 row)
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-- clean-up
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DROP TABLE cluster_management_test;
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-- check that adding/removing nodes are propagated to nodes with hasmetadata=true
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SELECT master_remove_node('localhost', :worker_2_port);
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master_remove_node
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--------------------
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(1 row)
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UPDATE pg_dist_node SET hasmetadata=true WHERE nodeport=:worker_1_port;
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SELECT 1 FROM master_add_node('localhost', :worker_2_port);
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?column?
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----------
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1
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(1 row)
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\c - - - :worker_1_port
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SELECT nodename, nodeport FROM pg_dist_node WHERE nodename='localhost' AND nodeport=:worker_2_port;
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nodename | nodeport
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-----------+----------
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localhost | 57638
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(1 row)
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\c - - - :master_port
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SELECT master_remove_node('localhost', :worker_2_port);
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master_remove_node
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--------------------
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(1 row)
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\c - - - :worker_1_port
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SELECT nodename, nodeport FROM pg_dist_node WHERE nodename='localhost' AND nodeport=:worker_2_port;
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nodename | nodeport
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----------+----------
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(0 rows)
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\c - - - :master_port
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-- check that added nodes are not propagated to nodes with hasmetadata=false
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UPDATE pg_dist_node SET hasmetadata=false WHERE nodeport=:worker_1_port;
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SELECT 1 FROM master_add_node('localhost', :worker_2_port);
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?column?
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----------
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1
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(1 row)
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\c - - - :worker_1_port
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SELECT nodename, nodeport FROM pg_dist_node WHERE nodename='localhost' AND nodeport=:worker_2_port;
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nodename | nodeport
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----------+----------
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(0 rows)
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\c - - - :master_port
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-- check that removing two nodes in the same transaction works
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SELECT
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master_remove_node('localhost', :worker_1_port),
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master_remove_node('localhost', :worker_2_port);
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master_remove_node | master_remove_node
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--------------------+--------------------
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(1 row)
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SELECT count(1) FROM pg_dist_node;
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count
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-------
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0
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(1 row)
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-- check that adding two nodes in the same transaction works
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SELECT
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master_add_node('localhost', :worker_1_port),
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master_add_node('localhost', :worker_2_port);
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master_add_node | master_add_node
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---------------------------------------------------+---------------------------------------------------
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(8,7,localhost,57637,default,f,t,primary,default) | (9,8,localhost,57638,default,f,t,primary,default)
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(1 row)
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SELECT * FROM pg_dist_node ORDER BY nodeid;
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nodeid | groupid | nodename | nodeport | noderack | hasmetadata | isactive | noderole | nodecluster
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--------+---------+-----------+----------+----------+-------------+----------+----------+-------------
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8 | 7 | localhost | 57637 | default | f | t | primary | default
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9 | 8 | localhost | 57638 | default | f | t | primary | default
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(2 rows)
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-- check that mixed add/remove node commands work fine inside transaction
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BEGIN;
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SELECT master_remove_node('localhost', :worker_2_port);
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master_remove_node
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--------------------
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(1 row)
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SELECT 1 FROM master_add_node('localhost', :worker_2_port);
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?column?
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----------
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1
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(1 row)
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SELECT master_remove_node('localhost', :worker_2_port);
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master_remove_node
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--------------------
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(1 row)
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COMMIT;
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SELECT nodename, nodeport FROM pg_dist_node WHERE nodename='localhost' AND nodeport=:worker_2_port;
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nodename | nodeport
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----------+----------
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(0 rows)
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UPDATE pg_dist_node SET hasmetadata=true WHERE nodeport=:worker_1_port;
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BEGIN;
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SELECT 1 FROM master_add_node('localhost', :worker_2_port);
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?column?
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----------
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1
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(1 row)
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SELECT master_remove_node('localhost', :worker_2_port);
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master_remove_node
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--------------------
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(1 row)
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SELECT 1 FROM master_add_node('localhost', :worker_2_port);
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?column?
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----------
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1
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(1 row)
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COMMIT;
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SELECT nodename, nodeport FROM pg_dist_node WHERE nodename='localhost' AND nodeport=:worker_2_port;
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nodename | nodeport
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-----------+----------
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localhost | 57638
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(1 row)
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\c - - - :worker_1_port
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SELECT nodename, nodeport FROM pg_dist_node WHERE nodename='localhost' AND nodeport=:worker_2_port;
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nodename | nodeport
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-----------+----------
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localhost | 57638
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(1 row)
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\c - - - :master_port
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SELECT master_remove_node(nodename, nodeport) FROM pg_dist_node;
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master_remove_node
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--------------------
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(2 rows)
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SELECT 1 FROM master_add_node('localhost', :worker_1_port);
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?column?
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----------
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1
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(1 row)
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SELECT 1 FROM master_add_node('localhost', :worker_2_port);
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?column?
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----------
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1
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(1 row)
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-- check that a distributed table can be created after adding a node in a transaction
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SELECT master_remove_node('localhost', :worker_2_port);
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master_remove_node
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--------------------
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(1 row)
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BEGIN;
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SELECT 1 FROM master_add_node('localhost', :worker_2_port);
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?column?
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----------
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1
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(1 row)
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CREATE TABLE temp(col1 text, col2 int);
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SELECT create_distributed_table('temp', 'col1');
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create_distributed_table
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--------------------------
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(1 row)
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INSERT INTO temp VALUES ('row1', 1);
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INSERT INTO temp VALUES ('row2', 2);
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COMMIT;
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SELECT col1, col2 FROM temp ORDER BY col1;
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col1 | col2
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------+------
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row1 | 1
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row2 | 2
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(2 rows)
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SELECT
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count(*)
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FROM
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pg_dist_shard_placement, pg_dist_shard
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WHERE
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pg_dist_shard_placement.shardid = pg_dist_shard.shardid
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AND pg_dist_shard.logicalrelid = 'temp'::regclass
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AND pg_dist_shard_placement.nodeport = :worker_2_port;
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count
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-------
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4
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(1 row)
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DROP TABLE temp;
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\c - - - :worker_1_port
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DELETE FROM pg_dist_partition;
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DELETE FROM pg_dist_shard;
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DELETE FROM pg_dist_placement;
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DELETE FROM pg_dist_node;
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\c - - - :master_port
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SELECT stop_metadata_sync_to_node('localhost', :worker_1_port);
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stop_metadata_sync_to_node
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----------------------------
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(1 row)
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SELECT stop_metadata_sync_to_node('localhost', :worker_2_port);
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stop_metadata_sync_to_node
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----------------------------
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(1 row)
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-- check that you can't add a primary to a non-default cluster
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SELECT master_add_node('localhost', 9999, nodecluster => 'olap');
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ERROR: primaries must be added to the default cluster
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-- check that you can't add more than one primary to a group
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SELECT groupid AS worker_1_group FROM pg_dist_node WHERE nodeport = :worker_1_port \gset
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SELECT master_add_node('localhost', 9999, groupid => :worker_1_group, noderole => 'primary');
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ERROR: group 12 already has a primary node
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-- check that you can add secondaries and unavailable nodes to a group
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SELECT groupid AS worker_2_group FROM pg_dist_node WHERE nodeport = :worker_2_port \gset
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SELECT 1 FROM master_add_node('localhost', 9998, groupid => :worker_1_group, noderole => 'secondary');
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?column?
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----------
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1
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(1 row)
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SELECT 1 FROM master_add_node('localhost', 9997, groupid => :worker_1_group, noderole => 'unavailable');
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?column?
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----------
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1
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(1 row)
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-- add_inactive_node also works with secondaries
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SELECT 1 FROM master_add_inactive_node('localhost', 9996, groupid => :worker_2_group, noderole => 'secondary');
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?column?
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----------
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1
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(1 row)
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-- check that you can add a seconary to a non-default cluster, and activate it, and remove it
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SELECT master_add_inactive_node('localhost', 9999, groupid => :worker_2_group, nodecluster => 'olap', noderole => 'secondary');
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master_add_inactive_node
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---------------------------------------------------
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(19,14,localhost,9999,default,f,f,secondary,olap)
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(1 row)
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SELECT master_activate_node('localhost', 9999);
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master_activate_node
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---------------------------------------------------
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(19,14,localhost,9999,default,f,t,secondary,olap)
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(1 row)
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SELECT master_disable_node('localhost', 9999);
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master_disable_node
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---------------------
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(1 row)
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SELECT master_remove_node('localhost', 9999);
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master_remove_node
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--------------------
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(1 row)
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-- check that you can't manually add two primaries to a group
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INSERT INTO pg_dist_node (nodename, nodeport, groupid, noderole)
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VALUES ('localhost', 5000, :worker_1_group, 'primary');
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ERROR: there cannot be two primary nodes in a group
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CONTEXT: PL/pgSQL function citus.pg_dist_node_trigger_func() line 10 at RAISE
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UPDATE pg_dist_node SET noderole = 'primary'
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WHERE groupid = :worker_1_group AND nodeport = 9998;
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ERROR: there cannot be two primary nodes in a group
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CONTEXT: PL/pgSQL function citus.pg_dist_node_trigger_func() line 18 at RAISE
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-- check that you can't manually add a primary to a non-default cluster
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INSERT INTO pg_dist_node (nodename, nodeport, groupid, noderole, nodecluster)
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VALUES ('localhost', 5000, 1000, 'primary', 'olap');
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ERROR: new row for relation "pg_dist_node" violates check constraint "primaries_are_only_allowed_in_the_default_cluster"
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DETAIL: Failing row contains (17, 1000, localhost, 5000, default, f, t, primary, olap).
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UPDATE pg_dist_node SET nodecluster = 'olap'
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WHERE nodeport = :worker_1_port;
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ERROR: new row for relation "pg_dist_node" violates check constraint "primaries_are_only_allowed_in_the_default_cluster"
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DETAIL: Failing row contains (13, 12, localhost, 57637, default, f, t, primary, olap).
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-- check that you /can/ add a secondary node to a non-default cluster
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SELECT groupid AS worker_2_group FROM pg_dist_node WHERE nodeport = :worker_2_port \gset
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SELECT master_add_node('localhost', 8888, groupid => :worker_1_group, noderole => 'secondary', nodecluster=> 'olap');
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master_add_node
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---------------------------------------------------
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(20,12,localhost,8888,default,f,t,secondary,olap)
|
|
(1 row)
|
|
|
|
-- check that super-long cluster names are truncated
|
|
SELECT master_add_node('localhost', 8887, groupid => :worker_1_group, noderole => 'secondary', nodecluster=>
|
|
'thisisasixtyfourcharacterstringrepeatedfourtimestomake256chars.'
|
|
'thisisasixtyfourcharacterstringrepeatedfourtimestomake256chars.'
|
|
'thisisasixtyfourcharacterstringrepeatedfourtimestomake256chars.'
|
|
'thisisasixtyfourcharacterstringrepeatedfourtimestomake256chars.'
|
|
'overflow'
|
|
);
|
|
master_add_node
|
|
--------------------------------------------------------------------------------------------------------------
|
|
(21,12,localhost,8887,default,f,t,secondary,thisisasixtyfourcharacterstringrepeatedfourtimestomake256chars.)
|
|
(1 row)
|
|
|
|
SELECT * FROM pg_dist_node WHERE nodeport=8887;
|
|
nodeid | groupid | nodename | nodeport | noderack | hasmetadata | isactive | noderole | nodecluster
|
|
--------+---------+-----------+----------+----------+-------------+----------+-----------+-----------------------------------------------------------------
|
|
21 | 12 | localhost | 8887 | default | f | t | secondary | thisisasixtyfourcharacterstringrepeatedfourtimestomake256chars.
|
|
(1 row)
|
|
|
|
-- don't remove the secondary and unavailable nodes, check that no commands are sent to
|
|
-- them in any of the remaining tests
|
|
-- master_add_secondary_node lets you skip looking up the groupid
|
|
SELECT master_add_secondary_node('localhost', 9995, 'localhost', :worker_1_port);
|
|
master_add_secondary_node
|
|
------------------------------------------------------
|
|
(22,12,localhost,9995,default,f,t,secondary,default)
|
|
(1 row)
|
|
|
|
SELECT master_add_secondary_node('localhost', 9994, primaryname => 'localhost', primaryport => :worker_2_port);
|
|
master_add_secondary_node
|
|
------------------------------------------------------
|
|
(23,14,localhost,9994,default,f,t,secondary,default)
|
|
(1 row)
|
|
|
|
SELECT master_add_secondary_node('localhost', 9993, 'localhost', 2000);
|
|
ERROR: node at "localhost:2000" does not exist
|
|
SELECT master_add_secondary_node('localhost', 9992, 'localhost', :worker_1_port, nodecluster => 'second-cluster');
|
|
master_add_secondary_node
|
|
-------------------------------------------------------------
|
|
(24,12,localhost,9992,default,f,t,secondary,second-cluster)
|
|
(1 row)
|
|
|
|
SELECT nodeid AS worker_1_node FROM pg_dist_node WHERE nodeport=:worker_1_port \gset
|
|
-- master_update_node checks node exists
|
|
SELECT master_update_node(100, 'localhost', 8000);
|
|
ERROR: could not find valid entry for node "localhost:8000"
|
|
-- master_update_node disallows aliasing existing node
|
|
SELECT master_update_node(:worker_1_node, 'localhost', :worker_2_port);
|
|
ERROR: node at "localhost:57638" already exists
|
|
-- master_update_node moves a node
|
|
SELECT master_update_node(:worker_1_node, 'somehost', 9000);
|
|
master_update_node
|
|
--------------------
|
|
|
|
(1 row)
|
|
|
|
SELECT * FROM pg_dist_node WHERE nodeid = :worker_1_node;
|
|
nodeid | groupid | nodename | nodeport | noderack | hasmetadata | isactive | noderole | nodecluster
|
|
--------+---------+----------+----------+----------+-------------+----------+----------+-------------
|
|
13 | 12 | somehost | 9000 | default | f | t | primary | default
|
|
(1 row)
|
|
|
|
-- cleanup
|
|
SELECT master_update_node(:worker_1_node, 'localhost', :worker_1_port);
|
|
master_update_node
|
|
--------------------
|
|
|
|
(1 row)
|
|
|
|
SELECT * FROM pg_dist_node WHERE nodeid = :worker_1_node;
|
|
nodeid | groupid | nodename | nodeport | noderack | hasmetadata | isactive | noderole | nodecluster
|
|
--------+---------+-----------+----------+----------+-------------+----------+----------+-------------
|
|
13 | 12 | localhost | 57637 | default | f | t | primary | default
|
|
(1 row)
|
|
|