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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9110) Improve upon HDFS-8480
Date Tue, 22 Sep 2015 13:39:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14902625#comment-14902625
] 

Hadoop QA commented on HDFS-9110:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | patch |   0m  0s | The patch command could not apply the patch during
dryrun. |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12761641/HDFS-9110.03.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 57003fa |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/12593/console |


This message was automatically generated.

> Improve upon HDFS-8480
> ----------------------
>
>                 Key: HDFS-9110
>                 URL: https://issues.apache.org/jira/browse/HDFS-9110
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 2.7.0
>            Reporter: Charlie Helin
>            Assignee: Charlie Helin
>            Priority: Minor
>             Fix For: 2.7.0, 2.6.1
>
>         Attachments: HDFS-9110.00.patch, HDFS-9110.01.patch, HDFS-9110.02.patch, HDFS-9110.03.patch
>
>
> This is a request to do some cosmetic improvements on top of HDFS-8480. There a couple
of File -> java.nio.file.Path conversions which is a little bit distracting. 
> The second aspect is more around efficiency, to be perfectly honest I'm not sure what
the number of files that may be processed. However as HDFS-8480 eludes to it appears that
this number could be significantly large. 
> The current implementation is basically a collect and process where all files first is
being examined; put into a collection and after that processed. HDFS-8480 could simply be
further enhanced by employing a single iteration without creating an intermediary collection
of filenames by using a FileWalker



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