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https://issues.apache.org/jira/browse/TEZ-4233?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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László Bodor updated TEZ-4233:
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Attachment: TEZ-4233.01.patch
> Map task should be blamed earlier for local fetch failures
> ----------------------------------------------------------
>
> Key: TEZ-4233
> URL: https://issues.apache.org/jira/browse/TEZ-4233
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: László Bodor
> Assignee: László Bodor
> Priority: Major
> Attachments: TEZ-4233.01.patch
>
>
> Fetch failures can be a result of network issue or disk issue. Currently, AM
> doesn't know about whether the original input read error happened because of
> a local fetch failure or not. I think if a map output was reported as a
> subject of local fetch failure, AM should respond earlier, and blame it as
> soon as possible. Here is a hidden assumption that a disk read should never
> fail.
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