accumulo-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From build...@apache.org
Subject svn commit: r907380 - in /websites/staging/accumulo/trunk/content: ./ release_notes/1.6.0.html
Date Tue, 29 Apr 2014 21:38:27 GMT
Author: buildbot
Date: Tue Apr 29 21:38:26 2014
New Revision: 907380

Log:
Staging update by buildbot for accumulo

Modified:
    websites/staging/accumulo/trunk/content/   (props changed)
    websites/staging/accumulo/trunk/content/release_notes/1.6.0.html

Propchange: websites/staging/accumulo/trunk/content/
------------------------------------------------------------------------------
--- cms:source-revision (original)
+++ cms:source-revision Tue Apr 29 21:38:26 2014
@@ -1 +1 @@
-1591052
+1591115

Modified: websites/staging/accumulo/trunk/content/release_notes/1.6.0.html
==============================================================================
--- websites/staging/accumulo/trunk/content/release_notes/1.6.0.html (original)
+++ websites/staging/accumulo/trunk/content/release_notes/1.6.0.html Tue Apr 29 21:38:26 2014
@@ -109,7 +109,8 @@
 </ol>
 <p>The only built in test that conditional mutations support are equality and isNull.
 However, iterators can be configured on a conditional mutation to run before these test.
 This makes it possible to implement any number of test such as less than, greater than, contains,
etc.</p>
 <h3 id="encryption">Encryption</h3>
-<p>Support for encrypting Accumulo's persistent and over the wire data was added. 
 <a href="https://issues.apache.org/jira/browse/ACCUMULO-998" title="Support encryption
at rest">ACCUMULO-998</a>, <a href="https://issues.apache.org/jira/browse/ACCUMULO-958"
title="Support pluggable encryption in walogs">ACCUMULO-958</a>, and <a href="https://issues.apache.org/jira/browse/ACCUMULO-980"
title="Support pluggable codecs for RFile">ACCUMULO-980</a> cover encrypting data
at rest in write ahead logs and rfiles.   <a href="https://issues.apache.org/jira/browse/ACCUMULO-1009"
title="Support encryption over the wire">ACCUMULO-1009</a> covers encrypting data
over the wire using SSL.  </p>
+<p>Encryption is still an experimental feature, but much progress has been made since
1.5.0.  Support for encrypting rfiles and write ahead logs were added in <a href="https://issues.apache.org/jira/browse/ACCUMULO-958"
title="Support pluggable encryption in walogs">ACCUMULO-958</a> and <a href="https://issues.apache.org/jira/browse/ACCUMULO-980"
title="Support pluggable codecs for RFile">ACCUMULO-980</a>.  Support for encrypting
data over the wire using SSL was added in <a href="https://issues.apache.org/jira/browse/ACCUMULO-1009"
title="Support encryption over the wire">ACCUMULO-1009</a>.</p>
+<p>When a tablet server fails, its write ahead logs are sorted and stored in HDFS.
 In 1.6.0, encrypting these sorted write ahead logs is not supported.  <a href="https://issues.apache.org/jira/browse/ACCUMULO-981"
title="support pluggable encryption when recovering write-ahead logs">ACCUMULO-981</a>
addresses this issue.  </p>
 <h3 id="pluggable-compaction-strategies">Pluggable compaction strategies</h3>
 <p>One of the key elements of the <a href="http://research.google.com/archive/bigtable.html">BigTable</a>
design is use of the <a href="http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.44.2782&amp;rep=rep1&amp;type=pdf">Log
Structured Merge Tree</a>.  This entails sorting data in memory, writing out sorted
files, and then later merging multiple sorted files into a single file.   These automatic
merges happen in the background and Accumulo decides when to merge files based comparing relative
sizes of files to a compaction ratio.  Adjusting the compaction ratio is the only way a user
can control this process.  <a href="https://issues.apache.org/jira/browse/ACCUMULO-1451"
title="Make Compaction triggers extensible">ACCUMULO-1451</a> introduces pluggable
compaction strategies which allow users to choose when and what files to compact.  <a href="https://issues.apache.org/jira/browse/ACCUMULO-1808"
title="Create compaction strategy that has size limit">ACCUMULO-1808</a> adds a com
 paction strategy the prevents compaction of files over a configurable size.</p>
 <h3 id="lexicoders">Lexicoders</h3>
@@ -202,6 +203,7 @@ for <code>org.apache.accumulo.tserver.Ho
 If this is happening often a possible work around is to set <code>general.rpc.timeout</code>
to <code>240s</code>.    </p>
 <h3 id="other-known-issues">Other known issues</h3>
 <ul>
+<li><a href="https://issues.apache.org/jira/browse/ACCUMULO-981" title="support
pluggable encryption when recovering write-ahead logs">ACCUMULO-981</a> Sorted write
ahead logs are not encrypted.</li>
 <li><a href="https://issues.apache.org/jira/browse/ACCUMULO-1507" title="Dynamic
Classloader still can't keep proper track of jars">ACCUMULO-1507</a> Dynamic Classloader
still can't keep proper track of jars</li>
 <li><a href="https://issues.apache.org/jira/browse/ACCUMULO-1588" title="Monitor
XML and JSON differ">ACCUMULO-1588</a> Monitor XML and JSON differ</li>
 <li><a href="https://issues.apache.org/jira/browse/ACCUMULO-1628" title="NPE on
deep copied dumped memory iterator">ACCUMULO-1628</a> NPE on deep copied dumped memory
iterator</li>



Mime
View raw message