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Add note to upgrade section on DLR

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stack 2014-12-01 15:36:43 -08:00
parent b8fcf0ff21
commit 703848ceea
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src/main/docbkx/upgrading.xml
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@ -158,6 +158,16 @@
be sure to follow the recommendations therein.
</para>
</section>
<section xml:id="dlr"><title>Distributed Log Replay</title>
<para>
<xref linkend="distributed.log.replay" /> is off by default in hbase-1.0.
Enabling it can make a big difference improving HBase MTTR. Enable this
feature if you are doing a clean stop/start when you are upgrading.
You cannot rolling upgrade on to this feature (caveat if you are running
on a version of hbase in excess of hbase-0.98.4 -- see
<link xlink:href="https://issues.apache.org/jira/browse/HBASE-12577">HBASE-12577 Disable distributed log replay by default</link> for more).
</para>
</section>
</section>
<section xml:id="upgrade1.0.rolling.upgrade">
<title>Rolling upgrade from 0.98.x to HBase 1.0.0</title>