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https://issues.apache.org/jira/browse/HDFS-6701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14066103#comment-14066103
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Hadoop QA commented on HDFS-6701:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12656428/HDFS-6701-v1.txt
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 2 new
or modified test files.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 javadoc{color}. There were no new javadoc warning messages.
{color:green}+1 eclipse:eclipse{color}. The patch built with
eclipse:eclipse.
{color:green}+1 findbugs{color}. The patch does not introduce any new
Findbugs (version 2.0.3) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit warnings.
{color:red}-1 core tests{color}. The patch failed these unit tests in
hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs:
org.apache.hadoop.fs.TestSymlinkLocalFSFileSystem
org.apache.hadoop.metrics2.impl.TestMetricsSystemImpl
org.apache.hadoop.fs.TestSymlinkLocalFSFileContext
org.apache.hadoop.ipc.TestIPC
org.apache.hadoop.ipc.TestCallQueueManager
org.apache.hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFS
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/7379//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/7379//console
This message is automatically generated.
> Make seed optional in NetworkTopology#sortByDistance
> ----------------------------------------------------
>
> Key: HDFS-6701
> URL: https://issues.apache.org/jira/browse/HDFS-6701
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 2.5.0
> Reporter: Ashwin Shankar
> Attachments: HDFS-6701-v1.txt
>
>
> Currently seed in NetworkTopology#sortByDistance is set to the blockid which
> causes the RNG to generate same pseudo random order for each block. If no
> node local block location is present,this causes the same rack local replica
> to be hit for a particular block.
> It'll be good to make the seed optional, so that one could turn it off if
> they want block locations of a block to be randomized.
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