Commit Graph

8 Commits (d280b24266b4b7403eea54835e296b6c76199618)

Author SHA1 Message Date
Halil Ozan Akgül b877d606c7
Adds 2PC distributed commands from other databases (#7203)
DESCRIPTION: Adds support for 2PC from non-Citus main databases

This PR only adds support for `CREATE USER` queries, other queries need
to be added. But it should be simple because this PR creates the
underlying structure.

Citus main database is the database where the Citus extension is
created. A non-main database is all the other databases that are in the
same node with a Citus main database.

When a `CREATE USER` query is run on a non-main database we:

1. Run `start_management_transaction` on the main database. This
function saves the outer transaction's xid (the non-main database
query's transaction id) and marks the current query as main db command.
2. Run `execute_command_on_remote_nodes_as_user("CREATE USER
<username>", <username to run the command>)` on the main database. This
function creates the users in the rest of the cluster by running the
query on the other nodes. The user on the current node is created by the
query on the outer, non-main db, query to make sure consequent commands
in the same transaction can see this user.
3. Run `mark_object_distributed` on the main database. This function
adds the user to `pg_dist_object` in all of the nodes, including the
current one.

This PR also implements transaction recovery for the queries from
non-main databases.
2023-12-22 19:19:41 +03:00
Ahmet Gedemenli 936775e8e3 Delete transactions when removing node
With this commit, we delete entries in pg_dist_transaction
for the primary nodes that are removed by `master_remove_node`.
2020-12-07 11:35:20 +03:00
SaitTalhaNisanci 94a7e6475c
Remove copyright years (#2918)
* Update year as 2012-2019

* Remove copyright years
2019-10-15 17:44:30 +03:00
Hadi Moshayedi f4d3b94e22
Fix some of the casts for groupId (#2609)
A small change which partially addresses #2608.
2019-03-05 12:06:44 -08:00
Marco Slot 8486f76e15 Auto-recover 2PC transactions 2017-11-22 11:26:58 +01:00
Andres Freund d256f3fca9 Remove unused LogPreparedTransactions() function.
This is unused since 92c7567008.
2017-01-06 09:15:01 -08:00
Marco Slot 6cbc1945f9 Enable transaction recovery in connection API 2016-12-23 16:14:29 +01:00
Eren Basak cee7b54e7c Add worker transaction and transaction recovery infrastructure 2016-10-18 14:18:14 +03:00