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https://issues.apache.org/jira/browse/HDDS-240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16537534#comment-16537534
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Hudson commented on HDDS-240:
-----------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14546 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/14546/])
HDDS-240. Implement metrics for EventQueue. Contributed by Elek, Marton.
(aengineer: rev 2403231c8c3685ba08cd6bdf715d281cae611e45)
* (edit)
hadoop-hdds/framework/src/main/java/org/apache/hadoop/hdds/server/events/EventQueue.java
* (edit)
hadoop-hdds/framework/src/main/java/org/apache/hadoop/hdds/server/events/SingleThreadExecutor.java
* (edit)
hadoop-hdds/framework/src/test/java/org/apache/hadoop/hdds/server/events/TestEventQueue.java
> Implement metrics for EventQueue
> --------------------------------
>
> Key: HDDS-240
> URL: https://issues.apache.org/jira/browse/HDDS-240
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
> Components: SCM
> Reporter: Elek, Marton
> Assignee: Elek, Marton
> Priority: Major
> Fix For: 0.2.1
>
> Attachments: HDDS-240.001.patch
>
>
> The heart of the SCM is the lightweight EventQueue which is implemented in
> HDDS-25.
> The main advantage to use a centralized EventQueue API is that all the thread
> handling could be implemented in one central place (with unified the
> monitoring, thread naming, lifecycle management).
> In this jira I propose to create basic metrics for EventQueue. As (in the
> current implementation) each handler has an own executor which has already
> some metrics (for check when the unit tests could be stoped), it's quite easy
> to convert the atomic counters to real hadoop metrics.
> For the sake of simplicity I also propose to remove the addHandlerGroup. The
> method supported the case when the Executor was shared between multiple
> handlers. It's a special case, it's more harder to monitor (we need tricky
> naming convention) and can't see real demand. We can restore it when we will
> see the requirements.
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