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https://issues.apache.org/jira/browse/AMBARI-14301?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15063204#comment-15063204
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jun aoki commented on AMBARI-14301:
-----------------------------------
thank you so much [~jaimin] for your insightful comment. That seems the right
thing and we look forward to seeing getting AMBARI-14427 done. Let us know if
we can help you guys on that as well.
> Co-locate HAWQSEGMENT on hosts that have DATANODE component
> ------------------------------------------------------------
>
> Key: AMBARI-14301
> URL: https://issues.apache.org/jira/browse/AMBARI-14301
> Project: Ambari
> Issue Type: Improvement
> Components: ambari-web
> Affects Versions: trunk
> Reporter: Lav Jain
> Assignee: Lav Jain
> Priority: Minor
> Fix For: 2.3.0
>
> Attachments: AMBARI-14301.patch
>
>
> Looks like stackadvisor is used only upon a fresh install if no changes are
> made to the master components. In that case, the client/slaves are installed
> on all the hosts, so HAWQSEGMENT is co-located with DATANODE by default.
> If HDFS is already installed and HAWQ is enabled using add services, then
> Ambari chooses all hosts that do not have a MASTER component installed. This
> determination is being done in the javascript code.
> This patch is changing the hostlist for HAWQSEGMENT to be the same as
> DATANODE in the latter case.
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