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https://issues.apache.org/jira/browse/HBASE-18375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16120253#comment-16120253
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Anoop Sam John commented on HBASE-18375:
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Yes I was also saying same. Pls see
bq.You mean when the Active segment has used at least one Chunk NOT from pool, 
we wont flatten it into a CCM? 
So the all pooled chunks needed in that active segment itself which is becoming 
CCM.
Will see ur patch.

> The pool chunks from ChunkCreator are deallocated while in pool because there 
> is no reference to them
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-18375
>                 URL: https://issues.apache.org/jira/browse/HBASE-18375
>             Project: HBase
>          Issue Type: Sub-task
>    Affects Versions: 2.0.0-alpha-1
>            Reporter: Anastasia Braginsky
>            Assignee: Anastasia Braginsky
>            Priority: Critical
>             Fix For: 2.0.0, 3.0.0, 2.0.0-alpha-2
>
>         Attachments: HBASE-18375-V01.patch, HBASE-18375-V02.patch, 
> HBASE-18375-V03.patch, HBASE-18375-V04.patch
>
>
> Because MSLAB list of chunks was changed to list of chunk IDs, the chunks 
> returned back to pool can be deallocated by JVM because there is no reference 
> to them. The solution is to protect pool chunks from GC by the strong map of 
> ChunkCreator introduced by HBASE-18010. Will prepare the patch today.



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