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https://issues.apache.org/jira/browse/TEZ-4028?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16736408#comment-16736408
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Eric Wohlstadter commented on TEZ-4028:
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[~harishjp]
I was initially confused why "_1" was being added.
Minor: Could you define that string as a constant with a descriptive name to
indicate it is related to TEZ_HISTORY_LOGGING_PROTO_SPLIT_DAG_START?
> Events not visible from proto history logging for s3a filesystem until dag
> completes.
> -------------------------------------------------------------------------------------
>
> Key: TEZ-4028
> URL: https://issues.apache.org/jira/browse/TEZ-4028
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Harish Jaiprakash
> Assignee: Harish Jaiprakash
> Priority: Major
> Attachments: TEZ-4028.01.patch
>
>
> The events are not visible in the files because s3 filesystem
> * flush writes to local disk and only upload/commit to s3 on close.
> * does not support append
> As an initial fix we log the dag submitted, initialized and started events
> into a file and these can be read to get the dag plan, config from the AM.
> The counters are anyways not available until the dag completes.
> The in-progress information cannot be read, this can be obtained from the AM
> once we have the above events.
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