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https://issues.apache.org/jira/browse/SPARK-23811?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Li Yuanjian updated SPARK-23811:
Description:
This is a bug caused by abnormal scenario describe below:
# ShuffleMapTask 1.0 running, this task will fetch data from ExecutorA
# ExecutorA Lost, trigger `mapOutputTracker.removeOutputsOnExecutor(execId)` ,
shuffleStatus changed.
# Speculative ShuffleMapTask 1.1 start, got a FetchFailed immediately.
# ShuffleMapTask 1.0 finally succeed, but because of 1.1's FetchFailed, stage
still mark as failed stage.
# ShuffleMapTask 1 is the last task of its stage, so this stage will never
succeed because of there's no missing task DagScheduler can get.
was:
This is a bug caused by abnormal scenario describe below:
# ShuffleMapTask 1.0 running, this task will fetch data from ExecutorA
# ExecutorA Lost, trigger `mapOutputTracker.removeOutputsOnExecutor(execId)` ,
shuffleStatus changed.
# Speculative ShuffleMapTask 1.1 start, got a FetchFailed immediately.
# ShuffleMapTask 1 is the last task of its stage, so this stage will never
succeed because of there's no missing task DagScheduler can get.
> FetchFailed comes before Success of same task will cause child stage never
> succeed
> --
>
> Key: SPARK-23811
> URL: https://issues.apache.org/jira/browse/SPARK-23811
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
>Affects Versions: 2.2.0, 2.3.0
>Reporter: Li Yuanjian
>Priority: Major
> Attachments: 1.png, 2.png
>
>
> This is a bug caused by abnormal scenario describe below:
> # ShuffleMapTask 1.0 running, this task will fetch data from ExecutorA
> # ExecutorA Lost, trigger `mapOutputTracker.removeOutputsOnExecutor(execId)`
> , shuffleStatus changed.
> # Speculative ShuffleMapTask 1.1 start, got a FetchFailed immediately.
> # ShuffleMapTask 1.0 finally succeed, but because of 1.1's FetchFailed,
> stage still mark as failed stage.
> # ShuffleMapTask 1 is the last task of its stage, so this stage will never
> succeed because of there's no missing task DagScheduler can get.
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