Sergey Shelukhin created HIVE-15254:
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Summary: LLAP: send finishable state with the task, not (just) as
a message
Key: HIVE-15254
URL: https://issues.apache.org/jira/browse/HIVE-15254
Project: Hive
Issue Type: Bug
Reporter: Sergey Shelukhin
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2016-11-18 20:20:01,472 .
[HISTORY][DAG:dag_1478967587833_2622_1][Event:VERTEX_FINISHED]: vertexName=Map
7,
2016-11-18 20:20:01,500 .
[HISTORY][DAG:dag_1478967587833_2622_1][Event:VERTEX_FINISHED]: vertexName=Map
4,
2016-11-18 20:20:01,503 .
[HISTORY][DAG:dag_1478967587833_2622_1][Event:VERTEX_FINISHED]: vertexName=Map
5,
2016-11-18 20:20:01,505 .
[HISTORY][DAG:dag_1478967587833_2622_1][Event:VERTEX_FINISHED]: vertexName=Map
8,
2016-11-18 20:20:01,530 .
[HISTORY][DAG:dag_1478967587833_2622_1][Event:VERTEX_FINISHED]: vertexName=Map
6,
2016-11-18 20:20:01,870 .
[HISTORY][DAG:dag_1478967587833_2622_1][Event:VERTEX_FINISHED]: vertexName=Map
3,
...
2016-11-18T20:26:59,410 INFO [Wait-Queue-Scheduler-0 ()]
org.apache.hadoop.hive.llap.daemon.impl.TaskExecutorService: Attempting to
execute TaskWrapper{task=attempt_1478967587833_2622_1_06_000024_1,
inWaitQueue=true, inPreemptionQueue=false, registeredForNotifications=true,
canFinish=false, firstAttemptStartTime=1479500401952,
dagStartTime=1479500397795, withinDagPriority=64, vertexParallelism= 107,
selfAndUpstreamParallelism= 131, selfAndUpstreamComplete= 87}
2016-11-18T20:26:59,411 INFO [Wait-Queue-Scheduler-0 ()]
org.apache.hadoop.hive.llap.daemon.impl.TaskExecutorService:
attempt_1478967587833_2622_1_06_000024_1 is not finishable. Adding it to
pre-emption queue
2016-11-18T20:26:59,415 INFO [Task-Executor-14
(1478967587833_2622_1_06_000024_1)]
org.apache.tez.runtime.LogicalIOProcessorRuntimeTask: Initializing
LogicalIOProcessorRuntimeTask with TaskSpec: DAGName : ... inputSpecList=[
{{ sourceVertexName=a11, physicalEdgeCount=1,
inputClassName=org.apache.tez.mapreduce.input.MRInputLegacy }},
{{ sourceVertexName=Map 5, physicalEdgeCount=1,
inputClassName=org.apache.tez.runtime.library.input.UnorderedKVInput }},
{{ sourceVertexName=Map 6, physicalEdgeCount=3,
inputClassName=org.apache.tez.runtime.library.input.UnorderedKVInput }},
{{ sourceVertexName=Map 8, physicalEdgeCount=1,
inputClassName=org.apache.tez.runtime.library.input.UnorderedKVInput }},
{{ sourceVertexName=Map 4, physicalEdgeCount=1,
inputClassName=org.apache.tez.runtime.library.input.UnorderedKVInput }},
{{ sourceVertexName=Map 7, physicalEdgeCount=1,
inputClassName=org.apache.tez.runtime.library.input.UnorderedKVInput }},
{{ sourceVertexName=Map 3, physicalEdgeCount=17,
inputClassName=org.apache.tez.runtime.library.input.UnorderedKVInput }}, ],
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The task should be finishable but isn't.
That can be a problem when adding to wait queue and then rejecting the least
important task (the one being submitted, or an old evicted one) - wait queue
comparator takes finishable state into account, so while this task should be
able to kick any non-finishable task out of the queue, it might actually get
rejected because it "looks" non-finishable at submission time.
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