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From Stack <st...@duboce.net>
Subject Re: Does anybody enable MSLAB in production system? I am not sure if it's stable enough for production system?
Date Mon, 27 Jun 2011 21:52:29 GMT
On Sat, Jun 25, 2011 at 5:59 PM, Dhruba Borthakur <dhruba@gmail.com> wrote:
> Going forward, it might make sense to enable this option by default.
>

Yes.  Its on by default in trunk Dhruba:

  <property>
    <name>hbase.hregion.memstore.mslab.enabled</name>
    <value>true</value>
    <description>
      Enables the MemStore-Local Allocation Buffer,
      a feature which works to prevent heap fragmentation under
      heavy write loads. This can reduce the frequency of stop-the-world
      GC pauses on large heaps.
    </description>
  </property>

St.Ack

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