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https://issues.apache.org/jira/browse/HDFS-7368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14635995#comment-14635995
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Hadoop QA commented on HDFS-7368:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  18m 57s | Pre-patch trunk compilation is 
healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any 
@author tags. |
| {color:red}-1{color} | tests included |   0m  0s | 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{color} | javac |   7m 45s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |   9m 45s | 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:red}-1{color} | checkstyle |   1m 50s | The applied patch generated  1 
new checkstyle issues (total was 21, now 22). |
| {color:green}+1{color} | shellcheck |   0m  5s | There were no new shellcheck 
(v0.3.3) issues. |
| {color:red}-1{color} | whitespace |   0m  0s | The patch has 2  line(s) that 
end in whitespace. Use git apply --whitespace=fix. |
| {color:green}+1{color} | install |   1m 30s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with 
eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   4m 23s | The patch does not introduce 
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | common tests |  22m 23s | Tests passed in 
hadoop-common. |
| {color:red}-1{color} | hdfs tests | 161m  2s | Tests failed in hadoop-hdfs. |
| | | 229m  1s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.hdfs.TestAppendSnapshotTruncate |
|   | hadoop.hdfs.TestDistributedFileSystem |
|   | hadoop.hdfs.server.namenode.ha.TestStandbyIsHot |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12679814/HDFS-7368-001.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle shellcheck |
| git revision | trunk / 5137b38 |
| checkstyle |  
https://builds.apache.org/job/PreCommit-HDFS-Build/11774/artifact/patchprocess/diffcheckstylehadoop-common.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11774/artifact/patchprocess/whitespace.txt
 |
| hadoop-common test log | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11774/artifact/patchprocess/testrun_hadoop-common.txt
 |
| hadoop-hdfs test log | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11774/artifact/patchprocess/testrun_hadoop-hdfs.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/11774/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf900.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/11774/console |


This message was automatically generated.

> Support HDFS specific 'shell' on command 'hdfs dfs' invocation
> --------------------------------------------------------------
>
>                 Key: HDFS-7368
>                 URL: https://issues.apache.org/jira/browse/HDFS-7368
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs-client
>            Reporter: Vinayakumar B
>            Assignee: Vinayakumar B
>              Labels: BB2015-05-TBR
>         Attachments: HDFS-7368-001.patch
>
>
> * *hadoop fs* is the generic implementation for all filesystem 
> implementations, but some of the operations are supported only in some 
> filesystems. Ex: snapshot commands, acl commands, xattr commands.
> * *hdfs dfs* is recommended in all hdfs related docs in current releases.
> In current code  both *hdfs shell* and *hadoop fs* points to hadoop common 
> implementation of FSShell.
> It would be better to have HDFS specific extention of FSShell which includes 
> HDFS only commands in future.



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