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https://issues.apache.org/jira/browse/HDFS-4804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13651061#comment-13651061
]
Hadoop QA commented on HDFS-4804:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12582108/HDFS-4804.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:red}-1 tests included{color}. The patch doesn't appear to include
any new or modified tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 javadoc{color}. The javadoc tool did not generate any
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 1.3.9) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit warnings.
{color:green}+1 core tests{color}. The patch passed unit tests in
hadoop-hdfs-project/hadoop-hdfs.
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/4362//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/4362//console
This message is automatically generated.
> WARN when users set the block balanced preference percent below 0.5 or above
> 1.0
> --------------------------------------------------------------------------------
>
> Key: HDFS-4804
> URL: https://issues.apache.org/jira/browse/HDFS-4804
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 2.0.4-alpha
> Reporter: Stephen Chu
> Assignee: Stephen Chu
> Priority: Minor
> Attachments: HDFS-4804.patch
>
>
> With the new feature added in HDFS-1804 (Add a new block-volume device
> choosing policy that looks at free space), it'd be useful to have a WARN log
> if the operator sets
> dfs.datanode.fsdataset.volume.choosing.balanced-space-preference-percent to a
> value greater than 1.0. This might happen if the operator mistakenly assumes
> that this setting takes in a percentage number from 0.0-100.0, while the
> setting actually takes a range 0.0-1.0.
> Also, it'd be useful to WARN in the case that value is set below 0.5, which
> would cause disks with less free space to get more block allocations.
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