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From els...@apache.org
Subject [1/3] git commit: ACCUMULO-1946 Note in the README about dfs.datanode.synconclose, with a slight amendment to hadoop version application.
Date Tue, 03 Dec 2013 16:55:55 GMT
Updated Branches:
  refs/heads/1.6.0-SNAPSHOT 890ee25cf -> b5227cf31


ACCUMULO-1946 Note in the README about dfs.datanode.synconclose, with a slight amendment to
hadoop version application.


Project: http://git-wip-us.apache.org/repos/asf/accumulo/repo
Commit: http://git-wip-us.apache.org/repos/asf/accumulo/commit/47403ba4
Tree: http://git-wip-us.apache.org/repos/asf/accumulo/tree/47403ba4
Diff: http://git-wip-us.apache.org/repos/asf/accumulo/diff/47403ba4

Branch: refs/heads/1.6.0-SNAPSHOT
Commit: 47403ba4f5d552cabb94bc710e050dc114bcc922
Parents: 1b3d071
Author: Josh Elser <elserj@apache.org>
Authored: Mon Dec 2 12:43:58 2013 -0500
Committer: Josh Elser <elserj@apache.org>
Committed: Tue Dec 3 11:41:36 2013 -0500

----------------------------------------------------------------------
 README | 5 +++++
 1 file changed, 5 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/accumulo/blob/47403ba4/README
----------------------------------------------------------------------
diff --git a/README b/README
index 878bbe3..bc469fc 100644
--- a/README
+++ b/README
@@ -73,6 +73,11 @@ You will need to have hadoop installed and configured on your system.
 Accumulo 1.4.5-SNAPSHOT has been tested with hadoop version 0.20.2 and
 0.20.203.0.
 
+Additionally, it is strongly recommended that you enable 'dfs.datanode.synconclose'
+(only available in Apache Hadoop >=1.1.1 or >=0.23) in your hdfs-site.xml configuration

+file to ensure that, in the face of unexpected power loss to a datanode, files are 
+wholly synced to disk.
+
 The example accumulo configuration files are placed in directories based on the 
 memory footprint for the accumulo processes.  If you are using native libraries
 for you tablet server in-memory map, then you can use the files in "native-standalone".


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