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https://issues.apache.org/jira/browse/AMBARI-15566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15212277#comment-15212277
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bhuvnesh chaudhary commented on AMBARI-15566:
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pushed to trunk and branch-2.2
> 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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