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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-15449) HAWQ hdfs-client / output.replace-datanode-on-failure should be set to true by default
Date Sat, 19 Mar 2016 12:51:33 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-15449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15202747#comment-15202747
] 

Hadoop QA commented on AMBARI-15449:
------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12794244/AMBARI-15499.branch_2_2.patch.1
  against trunk revision .

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

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

    {color:green}+1 core tests{color}.  The patch passed unit tests in ambari-server.

Test results: https://builds.apache.org/job/Ambari-trunk-test-patch/5931//testReport/
Console output: https://builds.apache.org/job/Ambari-trunk-test-patch/5931//console

This message is automatically generated.

> HAWQ hdfs-client / output.replace-datanode-on-failure should be set to true by default
> --------------------------------------------------------------------------------------
>
>                 Key: AMBARI-15449
>                 URL: https://issues.apache.org/jira/browse/AMBARI-15449
>             Project: Ambari
>          Issue Type: Bug
>            Reporter: Alexander Denissov
>            Assignee: Alexander Denissov
>            Priority: Minor
>             Fix For: 2.2.2
>
>         Attachments: AMBARI-15449.branch_2_2.patch, AMBARI-15499.branch_2_2.patch.1,
Screen Shot 2016-03-18 at 10.22.00 AM.png, Screen Shot 2016-03-18 at 10.22.47 AM.png, Screen
Shot 2016-03-18 at 10.24.35 AM.png, Screen Shot 2016-03-18 at 10.28.04 AM.png
>
>
> On large cluster, replace-datanode-on-failure should be set to true, but on small clusters
(developers environment or testing environment), it should be set to false, otherwise, if
datanodes are overloaded, it will report error. This is the reason it was set to false by
default earlier. 
> Ambari should set it to true when cluster size > 4, otherwise set it to false.



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