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https://issues.apache.org/jira/browse/TEZ-4187?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron Pfeifer updated TEZ-4187:
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Description:
Hi folks!
There appears to be an issue where the ShuffleSchedulerCallable is not properly
interrupted when a fetch failure has occurred from one of multiple input
vertices. When this happens, our logs show the ShuffleScheduler (for the input
vertex which did *not* set the throwable) running forever in this loop:
https://github.com/apache/tez/blob/10cb3519bd34389210e6511a2ba291b52dcda081/tez-runtime-library/src/main/java/org/apache/tez/runtime/library/common/shuffle/orderedgrouped/ShuffleScheduler.java#L1122-L1127
I've attached logs demonstrating this issue and what our DAG looks like (to
clarify, the attached DAG graphical view is not from the failed task -- just
demonstrates what the vertex relationships are). I can reproduce this almost
every time. It always fails on a vertex with more than 1 input.
was:
Hi folks!
There appears to be an issue where the ShuffleSchedulerCallable is not properly
interrupted when a fetch failure has occurred from one of multiple input
vertices. When this happens, our logs show the ShuffleScheduler (for the input
vertex which did *not* set the throwable) running forever in this loop:
https://github.com/apache/tez/blob/10cb3519bd34389210e6511a2ba291b52dcda081/tez-runtime-library/src/main/java/org/apache/tez/runtime/library/common/shuffle/orderedgrouped/ShuffleScheduler.java#L1122-L1127
I've attached logs demonstrating this issue and what our DAG looks like. I can
reproduce this almost every time. It always fails on a vertex with more than 1
input.
> Shuffle hangs occasionally after fetch failure with multiple input vertices
> ---------------------------------------------------------------------------
>
> Key: TEZ-4187
> URL: https://issues.apache.org/jira/browse/TEZ-4187
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.9.2
> Environment: Tez 0.9.2
> Hadoop 2.9.2
> Debian 9.12
> Reporter: Aaron Pfeifer
> Priority: Major
> Attachments: DAG.png, task.log
>
>
> Hi folks!
> There appears to be an issue where the ShuffleSchedulerCallable is not
> properly interrupted when a fetch failure has occurred from one of multiple
> input vertices. When this happens, our logs show the ShuffleScheduler (for
> the input vertex which did *not* set the throwable) running forever in this
> loop:
> https://github.com/apache/tez/blob/10cb3519bd34389210e6511a2ba291b52dcda081/tez-runtime-library/src/main/java/org/apache/tez/runtime/library/common/shuffle/orderedgrouped/ShuffleScheduler.java#L1122-L1127
> I've attached logs demonstrating this issue and what our DAG looks like (to
> clarify, the attached DAG graphical view is not from the failed task -- just
> demonstrates what the vertex relationships are). I can reproduce this almost
> every time. It always fails on a vertex with more than 1 input.
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