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https://issues.apache.org/jira/browse/HBASE-24859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17183640#comment-17183640
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Bharath Vissapragada commented on HBASE-24859:
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Agree that snapshot isolation is a concern. I was hoping that we could do some
simple optimizations to improve the on-heap representation
(and understand the problem better) before we think about a fancy solution.
> Remove the empty regions from the hbase mapreduce splits
> --------------------------------------------------------
>
> Key: HBASE-24859
> URL: https://issues.apache.org/jira/browse/HBASE-24859
> Project: HBase
> Issue Type: Improvement
> Components: mapreduce
> Reporter: Sandeep Pal
> Assignee: Sandeep Pal
> Priority: Major
>
> It has been observed that when the table has too many regions, MR jobs
> consume more memory in the client. This is because we keep the region level
> information in memory and the memory heavy object is TableSplit because of
> Scan object as a part of it.
> We can optimize the memory consumption by not loading the region level
> information if the region is empty.
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