Author: mattf
Date: Fri Jul 27 10:10:46 2012
New Revision: 1366326
URL: http://svn.apache.org/viewvc?rev=1366326&view=rev
Log:
release notes for 1.1.0-rc2
Modified:
hadoop/common/branches/branch-1.1/src/docs/releasenotes.html
Modified: hadoop/common/branches/branch-1.1/src/docs/releasenotes.html
URL:
http://svn.apache.org/viewvc/hadoop/common/branches/branch-1.1/src/docs/releasenotes.html?rev=1366326&r1=1366325&r2=1366326&view=diff
==============================================================================
--- hadoop/common/branches/branch-1.1/src/docs/releasenotes.html (original)
+++ hadoop/common/branches/branch-1.1/src/docs/releasenotes.html Fri Jul 27
10:10:46 2012
@@ -94,6 +94,12 @@ dfs.datanode.sync.behind.writes - set to
dfs.datanode.readahead.bytes - set to a non-zero value to trigger readahead
for sequential reads
</blockquote></li>
+<li> <a href="https://issues.apache.org/jira/browse/HDFS-2617";>HDFS-2617</a>.
+ Major improvement reported by jghoman and fixed by jghoman (security)<br>
+ <b>Replaced Kerberized SSL for image transfer and fsck with SPNEGO-based
solution</b><br>
+ <blockquote> Due to the requirement that KSSL use weak
encryption types for Kerberos tickets, HTTP authentication to the NameNode will
now use SPNEGO by default. This will require users of previous branch-1
releases with security enabled to modify their configurations and create new
Kerberos principals in order to use SPNEGO. The old behavior of using KSSL can
optionally be enabled by setting the configuration option
"hadoop.security.use-weak-http-crypto" to "true".
+</blockquote></li>
+
<li> <a href="https://issues.apache.org/jira/browse/HDFS-2741";>HDFS-2741</a>.
Minor bug reported by markus17 and fixed by <br>
<b>dfs.datanode.max.xcievers missing in 0.20.205.0</b><br>
@@ -796,6 +802,11 @@ dfs.datanode.readahead.bytes - set to a
<b>Fix performance regression in shuffle </b><br>
<blockquote>There is a significant (up to 3x) performance regression in
shuffle (vs 0.20.2) in the Hadoop 1.x series. Most noticeable with high-end
switches.</blockquote></li>
+<li> <a
href="https://issues.apache.org/jira/browse/MAPREDUCE-4400";>MAPREDUCE-4400</a>.
+ Major bug reported by vicaya and fixed by vicaya (performance, task)<br>
+ <b>Fix performance regression for small jobs/workflows</b><br>
+ <blockquote>There is a significant performance regression for small
jobs/workflows (vs 0.20.2) in the Hadoop 1.x series. Most noticeable with Hive
and Pig jobs. PigMix has an average 40% regression against
0.20.2.</blockquote></li>
+
</ul>
