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https://issues.apache.org/jira/browse/HBASE-14613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15207933#comment-15207933
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Anoop Sam John commented on HBASE-14613:
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When working with HBASE-15180, discussed abt the check to know whether the
MSLAB is enabled or not. In fact I made an initial patch with this check.. Now
the Cells in the requests are decoded with sharing the same byte[] where the
RPC reads the requests. This is with assumption that any way the cells will be
again copied to MSLAB area just before adding it to Memstore. So when MSLAB
is not enabled, we should continue with old way of decoding which allocated new
byte[] just for one Cells content.
With CMS, with out using MSLAB was not good.. Saw this in tests.
I believe with G1GC, [[email protected]] did some tests with MSLAB
disabled, MSLAB on but no pool and MSLAB on with pool. Mind sharing those
results?
> Remove MemStoreChunkPool?
> -------------------------
>
> Key: HBASE-14613
> URL: https://issues.apache.org/jira/browse/HBASE-14613
> Project: HBase
> Issue Type: Brainstorming
> Reporter: Lars Hofhansl
> Priority: Minor
> Attachments: 14613-0.98.txt, gc.png, writes.png
>
>
> I just stumbled across MemStoreChunkPool. The idea behind is to reuse chunks
> of allocations rather than letting the GC handle this.
> Now, it's off by default, and it seems to me to be of dubious value. I'd
> recommend just removing it.
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