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From "Yi Deng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12133) Add FastLongHistogram for metric computation
Date Thu, 02 Oct 2014 18:45:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14156970#comment-14156970
] 

Yi Deng commented on HBASE-12133:
---------------------------------

[~stack] Did it break the compiling on Jenkins?

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:testCompile
(default-testCompile) on project hbase-common: Compilation failure: Compilation failure:
[ERROR] /home/jenkins/jenkins-slave/workspace/HBase-TRUNK/hbase-common/src/test/java/org/apache/hadoop/hbase/util/TestFastLongHistogram.java:[23,30]
error: cannot find symbol
[ERROR] symbol:   class SmallTests
[ERROR] location: package org.apache.hadoop.hbase
[ERROR] /home/jenkins/jenkins-slave/workspace/HBase-TRUNK/hbase-common/src/test/java/org/apache/hadoop/hbase/util/TestFastLongHistogram.java:[31,12]
error: cannot find symbol
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following
articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR] 
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <goals> -rf :hbase-common

> Add FastLongHistogram for metric computation
> --------------------------------------------
>
>                 Key: HBASE-12133
>                 URL: https://issues.apache.org/jira/browse/HBASE-12133
>             Project: HBase
>          Issue Type: New Feature
>          Components: metrics
>    Affects Versions: 0.98.8
>            Reporter: Yi Deng
>            Assignee: Yi Deng
>            Priority: Minor
>              Labels: histogram, metrics
>             Fix For: 2.0.0, 0.99.1
>
>         Attachments: 0001-Add-FastLongHistogram-for-fast-histogram-estimation.patch,
0001-Add-FastLongHistogram-for-fast-histogram-estimation.patch, 0001-Add-FastLongHistogram-for-fast-histogram-estimation.patch
>
>
> FastLongHistogram is a thread-safe class that estimate distribution of data and computes
the quantiles. It's useful for computing aggregated metrics like P99/P95.



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