Anoop Sam John updated HBASE-16651:
    Status: Patch Available  (was: Open)

> LRUBlockCache#returnBlock should try return block to Victim Handler L2 cache.
> -----------------------------------------------------------------------------
>                 Key: HBASE-16651
>                 URL: https://issues.apache.org/jira/browse/HBASE-16651
>             Project: HBase
>          Issue Type: Sub-task
>          Components: regionserver, Scanners
>    Affects Versions: 2.0.0
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 2.0.0
>         Attachments: HBASE-16651.patch
> In case of L1 and L2 cache usage with combinedMode = false, L2 is used as a 
> victim handler cache for L1 cache.  When a getBlock() request comes, L1 will 
> see if block is in it and if not it will try to provide the block from L2 
> cache. In such a case, the return block must return the block to L2 cache and 
> count down the ref count for the block.  But right now we just ignore the 
> returnBlock call in LRUCache

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