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https://issues.apache.org/jira/browse/HADOOP-9090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13508766#comment-13508766
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Hudson commented on HADOOP-9090:
--------------------------------
Integrated in Hadoop-trunk-Commit #3085 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/3085/])
HADOOP-9090. Support on-demand publish of metrics. Contributed by Mostafa
Elhemali. (Revision 1416538)
Result = SUCCESS
suresh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1416538
Files :
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/MetricsSystem.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/MetricsSinkAdapter.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/MetricsSystemImpl.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/metrics2/impl/TestGangliaMetrics.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/metrics2/impl/TestMetricsSystemImpl.java
> Support on-demand publish of metrics
> ------------------------------------
>
> Key: HADOOP-9090
> URL: https://issues.apache.org/jira/browse/HADOOP-9090
> Project: Hadoop Common
> Issue Type: New Feature
> Components: metrics
> Reporter: Mostafa Elhemali
> Assignee: Mostafa Elhemali
> Priority: Minor
> Fix For: 2.0.3-alpha
>
> Attachments: HADOOP-9090.2.patch,
> HADOOP-9090.justEnhanceDefaultImpl.2.patch,
> HADOOP-9090.justEnhanceDefaultImpl.3.patch,
> HADOOP-9090.justEnhanceDefaultImpl.4.patch,
> HADOOP-9090.justEnhanceDefaultImpl.5.patch,
> HADOOP-9090.justEnhanceDefaultImpl.6.patch,
> HADOOP-9090.justEnhanceDefaultImpl.7.patch,
> HADOOP-9090.justEnhanceDefaultImpl.8.patch,
> HADOOP-9090.justEnhanceDefaultImpl.9.patch,
> HADOOP-9090.justEnhanceDefaultImpl.patch, HADOOP-9090.patch
>
>
> Updated description based on feedback:
> We have a need to publish metrics out of some short-living processes, which
> is not really well-suited to the current metrics system implementation which
> periodically publishes metrics asynchronously (a behavior that works great
> for long-living processes). Of course I could write my own metrics system,
> but it seems like such a waste to rewrite all the awesome code currently in
> the MetricsSystemImpl and supporting classes.
> The way this JIRA solves this problem is adding a new method
> publishMetricsNow() to the MetricsSystemImpl() class, that does a synchronous
> out-of-band push of the metrics from the sources to the sink. I also add a
> method to MetricsSinkAdapter (putMetricsImmediate) to support that change.
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