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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8673) HDFS reports file already exists if there is a file/dir name end with ._COPYING_
Date Mon, 29 Jun 2015 07:32:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14605234#comment-14605234
] 

Hadoop QA commented on HDFS-8673:
---------------------------------

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| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  16m 23s | Pre-patch trunk compilation is healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any @author tags.
|
| {color:green}+1{color} | tests included |   0m  0s | The patch appears to include 1 new
or modified test files. |
| {color:green}+1{color} | javac |   7m 30s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |   9m 41s | There were no new javadoc warning messages.
|
| {color:green}+1{color} | release audit |   0m 23s | The applied patch does not increase
the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle |   1m  6s | There were no new checkstyle issues. |
| {color:green}+1{color} | whitespace |   0m  0s | The patch has no lines that end in whitespace.
|
| {color:green}+1{color} | install |   1m 34s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with eclipse:eclipse.
|
| {color:green}+1{color} | findbugs |   1m 51s | The patch does not introduce any new Findbugs
(version 3.0.0) warnings. |
| {color:green}+1{color} | common tests |  22m 21s | Tests passed in hadoop-common. |
| | |  61m 25s | |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12742453/HDFS-8673.000.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / a95d39f |
| hadoop-common test log | https://builds.apache.org/job/PreCommit-HDFS-Build/11523/artifact/patchprocess/testrun_hadoop-common.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/11523/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf909.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep
3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/11523/console |


This message was automatically generated.

> HDFS reports file already exists if there is a file/dir name end with ._COPYING_
> --------------------------------------------------------------------------------
>
>                 Key: HDFS-8673
>                 URL: https://issues.apache.org/jira/browse/HDFS-8673
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 2.7.0
>            Reporter: Chen He
>         Attachments: HDFS-8673.000-WIP.patch, HDFS-8673.000.patch
>
>
> Because CLI is using CommandWithDestination.java which add "._COPYING_" to the tail of
file name when it does the copy. It will cause problem if there is a file/dir already called
*._COPYING_ on HDFS.
> For file:
> -bash-4.1$ hadoop fs -put 5M /user/occ/
> -bash-4.1$ hadoop fs -mv /user/occ/5M /user/occ/5M._COPYING_
> -bash-4.1$ hadoop fs -ls /user/occ/
> Found 1 items
> -rw-r--r--   1 occ supergroup    5242880 2015-06-26 05:16 /user/occ/5M._COPYING_
> -bash-4.1$ hadoop fs -put 128K /user/occ/5M
> -bash-4.1$ hadoop fs -ls /user/occ/
> Found 1 items
> -rw-r--r--   1 occ supergroup     131072 2015-06-26 05:19 /user/occ/5M
> For dir:
> -bash-4.1$ hadoop fs -mkdir /user/occ/5M._COPYING_
> -bash-4.1$ hadoop fs -ls /user/occ/
> Found 1 items
> drwxr-xr-x   - occ supergroup          0 2015-06-26 05:24 /user/occ/5M._COPYING_
> -bash-4.1$ hadoop fs -put 128K /user/occ/5M
> put: /user/occ/5M._COPYING_ already exists as a directory
> -bash-4.1$ hadoop fs -ls /user/occ/
> (/user/occ/5M._COPYING_ is gone)



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