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https://issues.apache.org/jira/browse/TEZ-2119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17053860#comment-17053860
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Bikas Saha commented on TEZ-2119:
---------------------------------
Been a while. The intent of total_used might have been to maintain the total
containers used irrespective of losses, returns and re-acquisitions.
Initial_held is number held even when nothing is running (hot start).
> Counter for launched containers
> -------------------------------
>
> Key: TEZ-2119
> URL: https://issues.apache.org/jira/browse/TEZ-2119
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Rohini Palaniswamy
> Assignee: László Bodor
> Priority: Major
> Attachments: TEZ-2119.01.patch
>
>
> org.apache.tez.common.counters.DAGCounter
> NUM_SUCCEEDED_TASKS=32976
> TOTAL_LAUNCHED_TASKS=32976
> OTHER_LOCAL_TASKS=2
> DATA_LOCAL_TASKS=9147
> RACK_LOCAL_TASKS=23761
> It would be very nice to have TOTAL_LAUNCHED_CONTAINERS counter added to
> this. The difference between TOTAL_LAUNCHED_CONTAINERS and
> TOTAL_LAUNCHED_TASKS should make it easy to see how much container reuse is
> happening. It is very hard to find out now.
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