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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-15566) Update HAWQ default_hash_table_bucket_number property logic
Date Fri, 25 Mar 2016 14:16:25 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-15566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15211852#comment-15211852
] 

Hadoop QA commented on AMBARI-15566:
------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12795266/AMBARI-15566.branch22.patch
  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/6025//testReport/
Console output: https://builds.apache.org/job/Ambari-trunk-test-patch/6025//console

This message is automatically generated.

> Update HAWQ default_hash_table_bucket_number property logic
> -----------------------------------------------------------
>
>                 Key: AMBARI-15566
>                 URL: https://issues.apache.org/jira/browse/AMBARI-15566
>             Project: Ambari
>          Issue Type: Bug
>            Reporter: Alexander Denissov
>            Assignee: Alexander Denissov
>            Priority: Minor
>             Fix For: 2.2.2
>
>         Attachments: AMBARI-15566.branch22.patch
>
>
> Update the recommendation logic:
> Given that the hawq_rm_nvseg_perquery_limit = 512,
> 1) default_hash_table_bucket_number = #nodes * x where x is the maximal value that satisfy
two conditions: x <= 6 and #nodes * x < 512
> 2) if #nodes > 512, default_hash_table_bucket_number = 512.



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