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From ktur...@apache.org
Subject [accumulo-website] branch master updated: mention apache/accumulo#467 in 1.9.2 rel notes
Date Wed, 25 Jul 2018 13:24:25 GMT
This is an automated email from the ASF dual-hosted git repository.

kturner pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/accumulo-website.git


The following commit(s) were added to refs/heads/master by this push:
     new 8b2982b  mention apache/accumulo#467 in 1.9.2 rel notes
8b2982b is described below

commit 8b2982b069a5630596e49f5ae9ba82b518795fc0
Author: Keith Turner <kturner@apache.org>
AuthorDate: Wed Jul 25 09:24:15 2018 -0400

    mention apache/accumulo#467 in 1.9.2 rel notes
---
 _posts/release/2018-07-19-accumulo-1.9.2.md | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/_posts/release/2018-07-19-accumulo-1.9.2.md b/_posts/release/2018-07-19-accumulo-1.9.2.md
index 9cd322b..f316c0b 100644
--- a/_posts/release/2018-07-19-accumulo-1.9.2.md
+++ b/_posts/release/2018-07-19-accumulo-1.9.2.md
@@ -45,6 +45,14 @@ or `ConcurrentModificationException`s.
 
 These bugs were fixed in [#546].
 
+### Caching of file lengths
+
+RFiles stores metadata at the end of file. When opening a rfile Accumulo
+seeks to the end and reads metadata.  To do this seek the file length is needed. 
+Before opening a file its length is requested from the namenode.  This can
+add more load to a busy namenode.  To alleviate this, a small cache of file lengths was
+added in [#467].
+
 ### Monitor time unit bug
 
 A bug was found in the monitor which displayed time durations (for example,
@@ -74,6 +82,7 @@ View the [Upgrading Accumulo documentation][upgrade] for guidance.
   flushed, compacted, scanned, and deleted the table.
 
 [#441]: https://github.com/apache/accumulo/issues/441
+[#467]: https://github.com/apache/accumulo/issues/467
 [#537]: https://github.com/apache/accumulo/issues/537
 [#538]: https://github.com/apache/accumulo/issues/538
 [#539]: https://github.com/apache/accumulo/issues/539


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