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Posted to common-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2015/03/10 08:19:39 UTC
[jira] [Commented] (HADOOP-10434) Is it possible to use "df" to
calculate the dfs usage instead of "du"
[ https://issues.apache.org/jira/browse/HADOOP-10434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14354454#comment-14354454 ]
Hadoop QA commented on HADOOP-10434:
------------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12648325/HADOOP-10434-1.patch
against trunk revision 7711049.
{color:red}-1 patch{color}. The patch command could not apply the patch.
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/5909//console
This message is automatically generated.
> Is it possible to use "df" to calculate the dfs usage instead of "du"
> ---------------------------------------------------------------------
>
> Key: HADOOP-10434
> URL: https://issues.apache.org/jira/browse/HADOOP-10434
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Affects Versions: 2.3.0
> Reporter: MaoYuan Xian
> Priority: Minor
> Attachments: HADOOP-10434-1.patch
>
>
> When we run datanode from the machine with big disk volume, it's found du operations from org.apache.hadoop.fs.DU's DURefreshThread cost lots of disk performance.
> As we use the whole disk for hdfs storage, it is possible calculate volume usage via "df" command. Is it necessary adding the "df" option for usage calculation in hdfs (org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice)?
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