external
/
citus
mirror of https://github.com/citusdata/citus.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

wip

lock_create_partition
Sait Talha Nisanci 2021-08-13 16:49:08 +03:00
parent a8435620c4
commit 54e4a105e9
1 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
src/backend/distributed/executor/adaptive_executor.c
View File

@ -712,6 +712,7 @@ static void SetAttributeInputMetadata(DistributedExecution *execution,
static void LookupTaskPlacementHostAndPort(ShardPlacement *taskPlacement, char **nodeName,
int *nodePort);
static bool IsDummyPlacement(ShardPlacement *taskPlacement);
static void LockParentShardResouceIfPartitionTaskList(List* taskList);
/*
* AdaptiveExecutorPreExecutorRun gets called right before postgres starts its executor
@ -1603,6 +1604,9 @@ AcquireExecutorShardLocksForExecution(DistributedExecution *execution)
/* acquire the locks for both the remote and local tasks */
List *taskList = execution->remoteAndLocalTaskList;
if (modLevel == ROW_MODIFY_NONE) {
LockParentShardResouceIfPartitionTaskList(taskList);
}
if (modLevel <= ROW_MODIFY_READONLY &&
!SelectForUpdateOnReferenceTable(taskList))
{
@ -1632,6 +1636,22 @@ AcquireExecutorShardLocksForExecution(DistributedExecution *execution)
}
static void LockParentShardResouceIfPartitionTaskList(List* taskList) {
if (list_length(taskList) < 1) return;
Task* task = (Task*) linitial(taskList);
uint64 shardId = task->anchorShardId;
if (shardId == INVALID_SHARD_ID) {
return;
}
ShardInterval *shardInterval = LoadShardInterval(shardId);
Oid relationId = shardInterval->relationId;
if (PartitionTable(relationId)) {
LockParentShardResourceIfPartition(shardId, AccessShareLock);
}
}
/*
* FinishDistributedExecution cleans up resources associated with a
* distributed execution.