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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5031) metrics aggregation is incorrect in database
Date Fri, 06 Mar 2009 04:41:56 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12679492#action_12679492
] 

Hadoop QA commented on HADOOP-5031:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12401538/HADOOP-5031.patch
  against trunk revision 750703.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no tests are needed for this patch.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 Eclipse classpath. The patch retains Eclipse classpath integrity.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    -1 core tests.  The patch failed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-minerva.apache.org/25/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-minerva.apache.org/25/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-minerva.apache.org/25/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-minerva.apache.org/25/console

This message is automatically generated.

> metrics aggregation is incorrect in database
> --------------------------------------------
>
>                 Key: HADOOP-5031
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5031
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/chukwa
>         Environment: Redhat 5.1, Java 6
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>         Attachments: HADOOP-5031.patch
>
>
> A few problem with the aggregation SQL statements:
> hdfs throughput should be calculated by doing two level aggregation:
> First, calculate the rate for hadoop datanode metrics with accumulated vales.
> Second, sum up all datanode rate to provide a single number to represent the current
cluster performance.
> Disable hod jobs utilization measurement - The data provide a rough view of the cluster
performance but mostly inaccurate.
> Disable user utilization measurement generated from hod job - The data is generated from
hod job metrics, and it's mostly inaccurate.

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