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https://issues.apache.org/jira/browse/TEZ-4511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mahesh Raju Somalaraju reassigned TEZ-4511:
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Assignee: Mahesh Raju Somalaraju
> Counter for input read errors
> -----------------------------
>
> Key: TEZ-4511
> URL: https://issues.apache.org/jira/browse/TEZ-4511
> Project: Apache Tez
> Issue Type: Sub-task
> Reporter: László Bodor
> Assignee: Mahesh Raju Somalaraju
> Priority: Major
>
> We need to see how many times AM was notified about input read errors,
> otherwise, this is a log-digging, grepping task. We might want to have it on
> vertex/dag level.
> I want to see 2 places:
> 1. Every time when an output was reported as failed to read:
> https://github.com/apache/tez/blob/5beab4ced9d07bc813a8d79ded111b72af5a2f02/tez-dag/src/main/java/org/apache/tez/dag/app/dag/impl/TaskAttemptImpl.java#L1791
> 2. When the producer task was marked failed due to read errors and rerun.
> This affects query performance even more seriously.
> Basically it's when we reach this point in the code:
> https://github.com/apache/tez/blob/5beab4ced9d07bc813a8d79ded111b72af5a2f02/tez-dag/src/main/java/org/apache/tez/dag/app/dag/impl/TaskAttemptImpl.java#L1888
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