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[SPARK-23491][SS] Remove explicit job cancellation from ContinuousExecution reconfiguring #20622

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[SPARK-23491][SS] Remove explicit job cancellation from ContinuousExecution reconfiguring #20622

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0e5e52f
remove job group cancel from continuous processing
jose-torres Feb 22, 2018
ae2d853
add stop/cancel
jose-torres Feb 22, 2018
d404baf
move stops to finally
jose-torres Feb 23, 2018
d3b16c1
add log
jose-torres Feb 23, 2018
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10 changes: 8 additions & 2 deletions .../main/scala/org/apache/spark/sql/execution/streaming/continuous/ContinuousExecution.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -236,9 +236,7 @@ class ContinuousExecution(
startTrigger()

if (reader.needsReconfiguration() && state.compareAndSet(ACTIVE, RECONFIGURING)) {
stopSources()
if (queryExecutionThread.isAlive) {
sparkSession.sparkContext.cancelJobGroup(runId.toString)
queryExecutionThread.interrupt()
}
false
Expand Down Expand Up @@ -266,12 +264,20 @@ class ContinuousExecution(
SQLExecution.withNewExecutionId(
sparkSessionForQuery, lastExecution)(lastExecution.toRdd)
}
} catch {
case t: Throwable
if StreamExecution.isInterruptionException(t) && state.get() == RECONFIGURING =>
logInfo(s"Query $id ignoring exception from reconfiguring: $t")
// interrupted by reconfiguration - swallow exception so we can restart the query
} finally {
epochEndpoint.askSync[Unit](StopContinuousExecutionWrites)
SparkEnv.get.rpcEnv.stop(epochEndpoint)

epochUpdateThread.interrupt()
epochUpdateThread.join()

stopSources()
sparkSession.sparkContext.cancelJobGroup(runId.toString)
}
}

Expand Down