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https://issues.apache.org/jira/browse/TEZ-2119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14486726#comment-14486726
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Jeff Zhang commented on TEZ-2119:
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Try to add one new counter USED_CONTAINERS for both Vertex and DAG, It is a
little different from LAUNCHED_CONTAINERS, because dag will use the container
that already launched for the last dag in session mode. [~rohini] Does that
make sense to you ?
> 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: Jeff Zhang
>
> 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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