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https://issues.apache.org/jira/browse/KYLIN-3341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16440759#comment-16440759
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RenZhiMin commented on KYLIN-3341:
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[~Shaofengshi] please check.
> SQL queries take up too much memory
> -----------------------------------
>
> Key: KYLIN-3341
> URL: https://issues.apache.org/jira/browse/KYLIN-3341
> Project: Kylin
> Issue Type: Improvement
> Components: Storage - HBase
> Affects Versions: v2.0.0
> Reporter: RenZhiMin
> Priority: Major
>
> Some SQL will take up too much memory in the application, the service is not
> stable, after analysis because the SQL query need to scan the relevant
> segemnt corresponding hbase table, is through the thread asynchronous request
> related to SQL cuboid corresponding region. After each segment makes a
> request, wait for the data to process the hbase callbacks.
> But sometimes SQL involves more segments, and before all the segments make
> requests, there is a large amount of data returned, leading to memory alarm
> and service instability.
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