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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-15566) Update HAWQ default_hash_table_bucket_number property logic
Date Fri, 25 Mar 2016 23:51:25 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-15566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15212615#comment-15212615
] 

Hudson commented on AMBARI-15566:
---------------------------------

ABORTED: Integrated in Ambari-branch-2.2 #559 (See [https://builds.apache.org/job/Ambari-branch-2.2/559/])
AMBARI-15566: Update HAWQ default_hash_table_bucket_number property (bchaudhary: [http://git-wip-us.apache.org/repos/asf?p=ambari.git&a=commit&h=380bff1cbb82981abbd4a158385ff8f1f72c4e45])
* ambari-server/src/main/resources/stacks/HDP/2.3/services/stack_advisor.py
* ambari-server/src/test/python/stacks/2.3/common/test_stack_advisor.py


> 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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