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TEZ-4441: TezAppMaster may stuck because of reportError skip send err… - #236
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tez-yetus
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Aug 9, 2022
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| Utils.getTaskSchedulerIdentifierString(taskSchedulerIndex, appContext) + ": " + | ||
| diagnostics); | ||
| if (taskSchedulerDescriptors[taskSchedulerIndex].getClassName().equals(yarnSchedulerClassName)) { | ||
| if (taskSchedulerDescriptors[taskSchedulerIndex].getEntityName() |
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I guess this is the actual fix
just a note, what are the values in your case:
taskSchedulerDescriptors[taskSchedulerIndex].getClassName()
yarnSchedulerClassName
taskSchedulerDescriptors[taskSchedulerIndex].getEntityName()
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Yes, this is the only actual fix.
- Before this PR
| method | return value |
|---|---|
| taskSchedulerDescriptors[taskSchedulerIndex].getClassName() | null |
| yarnSchedulerClassName | "org.apache.tez.dag.app.rm.YarnTaskSchedulerService" |
taskSchedulerDescriptors[taskSchedulerIndex].getClassName() is set from the variable 'taskSchedulerDescriptors' of DAGAppMaster::serviceInit. In DAGAppMaster::parsePlugin, when we construct NamedEntityDescriptor for tez yarn plugin, the className is all null.
yarnSchedulerClassName is set from tez.am.yarn.scheduler.class, default value is "org.apache.tez.dag.app.rm.YarnTaskSchedulerService".
So for tez yarn plugin, taskSchedulerDescriptors[taskSchedulerIndex].getClassName() will never equals to yarnSchedulerClassName. Then
- After this PR
taskSchedulerDescriptors[taskSchedulerIndex].getEntityName() will return "TezYarn"
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I see, nice catch:
we simply don't fill the classname, so we should not rely on it, only use it in case of createCustomTaskScheduler
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tez-yetus
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Aug 19, 2022
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tez-yetus
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Aug 19, 2022
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asfgit pushed a commit
that referenced
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Aug 29, 2022
…or event (#236) (zhengchenyu reviewed by Laszlo Bodor)
udaynpusa pushed a commit
to mapr/tez
that referenced
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Jan 30, 2024
…or event (apache#236) (zhengchenyu reviewed by Laszlo Bodor) (cherry picked from commit 55b6031)
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https://issues.apache.org/jira/browse/TEZ-4441