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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7165) Separate block metrics for files with replication count 1
Date Wed, 22 Oct 2014 02:40:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14179496#comment-14179496
] 

Hadoop QA commented on HDFS-7165:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12676217/HDFS-7165-20141021-v2.patch
  against trunk revision b294276.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 3 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-hdfs-project/hadoop-hdfs:

                  org.apache.hadoop.hdfs.server.namenode.ha.TestDNFencing
                  org.apache.hadoop.hdfs.server.namenode.ha.TestRetryCacheWithHA

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/8474//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/8474//console

This message is automatically generated.

> Separate block metrics for files with replication count 1
> ---------------------------------------------------------
>
>                 Key: HDFS-7165
>                 URL: https://issues.apache.org/jira/browse/HDFS-7165
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Andrew Wang
>            Assignee: Zhe Zhang
>         Attachments: HDFS-7165-20141003-v1.patch, HDFS-7165-20141009-v1.patch, HDFS-7165-20141010-v1.patch,
HDFS-7165-20141015-v1.patch, HDFS-7165-20141021-v1.patch, HDFS-7165-20141021-v2.patch
>
>
> We see a lot of escalations because someone has written teragen output with a replication
factor of 1, a DN goes down, and a bunch of missing blocks show up. These are normally false
positives, since teragen output is disposable, and generally speaking, users should understand
this is true for all repl=1 files.
> It'd be nice to be able to separate out these repl=1 missing blocks from missing blocks
with higher replication factors..



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