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Change the order in which the locks are acquired.

rebalance_move_notice
eaydingol 2024-02-27 09:32:57 +00:00
parent aeded49fc8
commit 1b8ed32189
3 changed files with 19 additions and 19 deletions
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14
src/backend/distributed/utils/resource_lock.c
View File

@ -707,13 +707,10 @@ SerializeNonCommutativeWrites(List *shardIntervalList, LOCKMODE lockMode)
}
List *replicatedShardList = NIL;
if (AnyTableReplicated(shardIntervalList, &replicatedShardList))
{
if (ClusterHasKnownMetadataWorkers() && !IsFirstWorkerNode())
{
LockShardListResourcesOnFirstWorker(lockMode, replicatedShardList);
}
bool anyTableReplicated = AnyTableReplicated(shardIntervalList, &replicatedShardList);
if (anyTableReplicated)
{
ShardInterval *firstShardInterval =
(ShardInterval *) linitial(replicatedShardList);
if (ReferenceTableShardId(firstShardInterval->shardId))
@ -728,7 +725,10 @@ SerializeNonCommutativeWrites(List *shardIntervalList, LOCKMODE lockMode)
LockReferencedReferenceShardResources(firstShardInterval->shardId, lockMode);
}
}
if (anyTableReplicated && ClusterHasKnownMetadataWorkers() && !IsFirstWorkerNode())
{
LockShardListResourcesOnFirstWorker(lockMode, replicatedShardList);
}
LockShardListResources(shardIntervalList, lockMode);
}

18
src/test/regress/expected/issue_7477.out
View File

@ -45,16 +45,16 @@ SELECT * FROM master_run_on_worker(
true);
node_name | node_port | success | result
---------------------------------------------------------------------
localhost | 57638 | f | ERROR: deadlock detected
localhost | 57638 | t | UPDATE 1
localhost | 57637 | t | UPDATE 1
localhost | 57637 | t | UPDATE 1
localhost | 57638 | t | UPDATE 1
localhost | 57637 | t | UPDATE 1
localhost | 57638 | t | UPDATE 1
localhost | 57637 | t | UPDATE 1
localhost | 57638 | t | UPDATE 1
localhost | 57638 | t | UPDATE 1
localhost | 57637 | t | UPDATE 1
localhost | 57637 | f | ERROR: deadlock detected
localhost | 57638 | f | ERROR: deadlock detected
localhost | 57637 | f | ERROR: canceling the transaction since it was involved in a distributed deadlock
localhost | 57638 | f | ERROR: deadlock detected
localhost | 57637 | f | ERROR: deadlock detected
localhost | 57638 | f | ERROR: deadlock detected
localhost | 57638 | f | ERROR: canceling the transaction since it was involved in a distributed deadlock
localhost | 57637 | f | ERROR: deadlock detected
(10 rows)
--- cleanup