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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/11/22 13:48:00 UTC
[jira] [Work logged] (HIVE-26459) ReduceRecordProcessor: move to using a timeout version of waitForAllInputsReady(TEZ-3302)
[ https://issues.apache.org/jira/browse/HIVE-26459?focusedWorklogId=828002&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-828002 ]
ASF GitHub Bot logged work on HIVE-26459:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 22/Nov/22 13:47
Start Date: 22/Nov/22 13:47
Worklog Time Spent: 10m
Work Description: abstractdog commented on PR #3523:
URL: https://github.com/apache/hive/pull/3523#issuecomment-1323705650
I'm wondering how could weproceed with this, trying to understand TEZ-3302 in practice at the same time
@zhangbutao , @rbalamohan : can you explain a scenario when this timeout is dangerous? if so, depending on the risk, we should be able to decide whether to approve this change (disabled) or abandon at all
Issue Time Tracking
-------------------
Worklog Id: (was: 828002)
Time Spent: 2h (was: 1h 50m)
> ReduceRecordProcessor: move to using a timeout version of waitForAllInputsReady(TEZ-3302)
> -----------------------------------------------------------------------------------------
>
> Key: HIVE-26459
> URL: https://issues.apache.org/jira/browse/HIVE-26459
> Project: Hive
> Issue Type: Improvement
> Components: HiveServer2
> Affects Versions: 4.0.0-alpha-2
> Reporter: zhangbutao
> Assignee: zhangbutao
> Priority: Major
> Labels: pull-request-available
> Time Spent: 2h
> Remaining Estimate: 0h
>
> Cluster environment: Haoop 3.1.0, Hive 3.1.0, Tez 0.9.2
> I often see some tez jobs stuck for a long time. I find partial tez reduce tasks seems to wait all inputs ready, and if inputs are not ready, the reduce tasks will wait forever.
> I think we can invoke the timeout version of *_waitForAllInputsReady,_* and this optimization was also mentioned in {*}HIVE-14042{*}. So, let's move forward with this optimization.
>
> {code:java}
> "TezChild" #32 daemon prio=5 os_prio=0 tid=0x0000fffc0a7cb800 nid=0xd012 waiting on condition [0x0000fffbb9b5c000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x000000068c08cd60> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
> at org.apache.tez.runtime.InputReadyTracker$InputReadyMonitor.awaitCondition(InputReadyTracker.java:147)
> at org.apache.tez.runtime.InputReadyTracker.waitForAllInputsReady(InputReadyTracker.java:107)
> at org.apache.tez.runtime.api.impl.TezProcessorContextImpl.waitForAllInputsReady(TezProcessorContextImpl.java:141)
> at org.apache.tez.runtime.api.impl.TezProcessorContextImpl.waitForAllInputsReady(TezProcessorContextImpl.java:136)
> at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordProcessor.init(ReduceRecordProcessor.java:122)
> at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:266)
> at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.run(TezProcessor.java:250)
> at org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:374)
> at org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:73)
> at org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:61)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1699)
> at org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:61)
> at org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:37)
> at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
> at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:108)
> at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:41)
> at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:77)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748) {code}
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