[jira] [Commented] (HBASE-18375) The pool chunks from ChunkCreator are deallocated while in pool because there is no reference to them

["Anoop Sam John (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-18375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16085518#comment-16085518 ] 

Anoop Sam John commented on HBASE-18375:
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We have Q of Chunk in MemStoreChunkPool where we keep the pooled chunks right?  So what is the issue?
private final BlockingQueue<Chunk> reclaimedChunks;


> 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
>            Reporter: Anastasia Braginsky
>
> 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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