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pull/3491/head
SaitTalhaNisanci 2020-02-12 16:52:58 +03:00
parent 1b78045867
commit 9302e6e699
1 changed files with 19 additions and 23 deletions
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36
src/backend/distributed/executor/adaptive_executor.c
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@ -590,7 +590,7 @@ static int UsableConnectionCount(WorkerPool *workerPool);
static long NextEventTimeout(DistributedExecution *execution);
static long MillisecondsBetweenTimestamps(TimestampTz startTime, TimestampTz endTime);
static WaitEventSet * BuildWaitEventSet(List *sessionList);
static void UpdateWaitEventSetFlags(WaitEventSet *waitEventSet, List *sessionList);
static void RebuildWaitEventSetFlags(WaitEventSet *waitEventSet, List *sessionList);
static TaskPlacementExecution * PopPlacementExecution(WorkerSession *session);
static TaskPlacementExecution * PopAssignedPlacementExecution(WorkerSession *session);
static TaskPlacementExecution * PopUnassignedPlacementExecution(WorkerPool *workerPool);
@ -619,9 +619,9 @@ static void ExtractParametersForRemoteExecution(ParamListInfo paramListInfo,
Oid **parameterTypes,
const char ***parameterValues);
static int GetEventSetSize(List *sessionList);
static int UpdateWaitEventSet(DistributedExecution *execution);
static bool ProcessWaitEvents(DistributedExecution *execution, WaitEvent *events, int
eventCount);
static int RebuildWaitEventSet(DistributedExecution *execution);
static void ProcessWaitEvents(DistributedExecution *execution, WaitEvent *events, int
eventCount, bool *cancellationReceived);
/*
* AdaptiveExecutor is called via CitusExecScan on the
@ -2037,23 +2037,20 @@ RunDistributedExecution(DistributedExecution *execution)
pfree(events);
events = NULL;
}
eventSetSize = UpdateWaitEventSet(execution);
eventSetSize = RebuildWaitEventSet(execution);
events = palloc0(eventSetSize * sizeof(WaitEvent));
}
else if (execution->waitFlagsChanged)
{
UpdateWaitEventSetFlags(execution->waitEventSet, execution->sessionList);
RebuildWaitEventSetFlags(execution->waitEventSet, execution->sessionList);
execution->waitFlagsChanged = false;
}
/* wait for I/O events */
int eventCount = WaitEventSetWait(execution->waitEventSet, timeout, events,
eventSetSize, WAIT_EVENT_CLIENT_READ);
if (!ProcessWaitEvents(execution, events, eventCount))
{
cancellationReceived = true;
}
ProcessWaitEvents(execution, events, eventCount, &cancellationReceived);
}
if (events != NULL)
@ -2096,13 +2093,13 @@ RunDistributedExecution(DistributedExecution *execution)
/*
* UpdateWaitEventSet updates the waitEventSet for the distributed execution.
* RebuildWaitEventSet updates the waitEventSet for the distributed execution.
* This happens when the connection set for the distributed execution is changed,
* which means that we need to update which connections we wait on for events.
* It returns the new event set size.
*/
static int
UpdateWaitEventSet(DistributedExecution *execution)
RebuildWaitEventSet(DistributedExecution *execution)
{
if (execution->waitEventSet != NULL)
{
@ -2120,10 +2117,10 @@ UpdateWaitEventSet(DistributedExecution *execution)
/*
* ProcessWaitEvents processes the received events from connections.
* It returns true if all events are processed, otherwise false.
*/
static bool
ProcessWaitEvents(DistributedExecution *execution, WaitEvent *events, int eventCount)
static void
ProcessWaitEvents(DistributedExecution *execution, WaitEvent *events, int eventCount,
bool *cancellationReceived)
{
int eventIndex = 0;
@ -2153,7 +2150,7 @@ ProcessWaitEvents(DistributedExecution *execution, WaitEvent *events, int eventC
* We cannot use "return" here inside a PG_TRY() block since
* then the exception stack won't be reset.
*/
return false;
*cancellationReceived = true;
}
continue;
@ -2164,7 +2161,6 @@ ProcessWaitEvents(DistributedExecution *execution, WaitEvent *events, int eventC
ConnectionStateMachine(session);
}
return true;
}
@ -3835,7 +3831,7 @@ BuildWaitEventSet(List *sessionList)
/*
* GetEventSetSize returns the event set size.
* GetEventSetSize returns the event set size for a list of sessions.
*/
static int
GetEventSetSize(List *sessionList)
@ -3846,11 +3842,11 @@ GetEventSetSize(List *sessionList)
/*
* UpdateWaitEventSetFlags modifies the given waitEventSet with the wait flags
* RebuildWaitEventSetFlags modifies the given waitEventSet with the wait flags
* for connections in the sessionList.
*/
static void
UpdateWaitEventSetFlags(WaitEventSet *waitEventSet, List *sessionList)
RebuildWaitEventSetFlags(WaitEventSet *waitEventSet, List *sessionList)
{
WorkerSession *session = NULL;
foreach_ptr(session, sessionList)