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Posted to commits@hbase.apache.org by st...@apache.org on 2014/12/02 00:37:09 UTC
hbase git commit: Add note to upgrade section on DLR
Repository: hbase
Updated Branches:
refs/heads/master b8fcf0ff2 -> 703848cee
Add note to upgrade section on DLR
Project: http://git-wip-us.apache.org/repos/asf/hbase/repo
Commit: http://git-wip-us.apache.org/repos/asf/hbase/commit/703848ce
Tree: http://git-wip-us.apache.org/repos/asf/hbase/tree/703848ce
Diff: http://git-wip-us.apache.org/repos/asf/hbase/diff/703848ce
Branch: refs/heads/master
Commit: 703848ceea988795f21dadce86a86de9ecae7eaf
Parents: b8fcf0f
Author: stack <st...@apache.org>
Authored: Mon Dec 1 15:36:43 2014 -0800
Committer: stack <st...@apache.org>
Committed: Mon Dec 1 15:36:56 2014 -0800
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src/main/docbkx/upgrading.xml | 10 ++++++++++
1 file changed, 10 insertions(+)
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http://git-wip-us.apache.org/repos/asf/hbase/blob/703848ce/src/main/docbkx/upgrading.xml
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diff --git a/src/main/docbkx/upgrading.xml b/src/main/docbkx/upgrading.xml
index 86b5585..546be22 100644
--- a/src/main/docbkx/upgrading.xml
+++ b/src/main/docbkx/upgrading.xml
@@ -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>