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From els...@apache.org
Subject [2/3] accumulo git commit: ACCUMULO-3308 Clarify WAL block size recommendation.
Date Mon, 08 Dec 2014 03:17:18 GMT
ACCUMULO-3308 Clarify WAL block size recommendation.


Project: http://git-wip-us.apache.org/repos/asf/accumulo/repo
Commit: http://git-wip-us.apache.org/repos/asf/accumulo/commit/db58b0c8
Tree: http://git-wip-us.apache.org/repos/asf/accumulo/tree/db58b0c8
Diff: http://git-wip-us.apache.org/repos/asf/accumulo/diff/db58b0c8

Branch: refs/heads/master
Commit: db58b0c85ccfae51cd3a1f0223439c49a7540d5a
Parents: 359f851
Author: Josh Elser <elserj@apache.org>
Authored: Sun Dec 7 22:11:26 2014 -0500
Committer: Josh Elser <elserj@apache.org>
Committed: Sun Dec 7 22:11:26 2014 -0500

----------------------------------------------------------------------
 .../main/latex/accumulo_user_manual/chapters/administration.tex   | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/accumulo/blob/db58b0c8/docs/src/main/latex/accumulo_user_manual/chapters/administration.tex
----------------------------------------------------------------------
diff --git a/docs/src/main/latex/accumulo_user_manual/chapters/administration.tex b/docs/src/main/latex/accumulo_user_manual/chapters/administration.tex
index e326cb0..ffbcfdf 100644
--- a/docs/src/main/latex/accumulo_user_manual/chapters/administration.tex
+++ b/docs/src/main/latex/accumulo_user_manual/chapters/administration.tex
@@ -192,7 +192,8 @@ Subsequently, when increasing the size of the write-ahead logs, it can
also be i
 to increase the HDFS block size that Accumulo uses when creating the files for the write-ahead
log.
 This is controlled via \texttt{tserver.wal.blocksize}. A basic recommendation is that when
 \texttt{tserver.walog.max.size} is larger than 2GB in size, set \texttt{tserver.wal.blocksize}
-to 2GB.
+to 2GB. Increasing the block size to a value larger than 2GB can result in decreased write
+performance to the write-ahead log file which will slow ingest.
 
 \subsection{Cluster Specification}
 


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