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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-6842) "hadoop fs -text" does not give a useful text representation of MapWritable objects
Date Wed, 06 May 2015 18:52:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6842?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14531182#comment-14531182
] 

Hadoop QA commented on HADOOP-6842:
-----------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  14m 34s | 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 31s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |   9m 35s | 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  4s | There were no new checkstyle issues. |
| {color:red}-1{color} | whitespace |   0m  0s | The patch has 1  line(s) that end in whitespace.
Use git apply --whitespace=fix. |
| {color:green}+1{color} | install |   1m 34s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 32s | The patch built with eclipse:eclipse.
|
| {color:green}+1{color} | findbugs |   1m 39s | The patch does not introduce any new Findbugs
(version 2.0.3) warnings. |
| {color:green}+1{color} | common tests |  23m 49s | Tests passed in hadoop-common. |
| | |  61m 10s | |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12730896/HADOOP-6842.002.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 185e63a |
| whitespace | https://builds.apache.org/job/PreCommit-HADOOP-Build/6507/artifact/patchprocess/whitespace.txt
|
| hadoop-common test log | https://builds.apache.org/job/PreCommit-HADOOP-Build/6507/artifact/patchprocess/testrun_hadoop-common.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-HADOOP-Build/6507/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf901.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-HADOOP-Build/6507/console |


This message was automatically generated.

> "hadoop fs -text" does not give a useful text representation of MapWritable objects
> -----------------------------------------------------------------------------------
>
>                 Key: HADOOP-6842
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6842
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: io
>    Affects Versions: 0.20.0
>            Reporter: Steven Wong
>            Assignee: Akira AJISAKA
>              Labels: BB2015-05-TBR
>         Attachments: HADOOP-6842.002.patch, HADOOP-6842.patch
>
>
> If a sequence file contains MapWritable objects, running "hadoop fs -text" on the file
prints the following for each MapWritable:
> org.apache.hadoop.io.MapWritable@4f8235ed
> To be more useful, it should print out the contents of the map instead. This can be done
by adding a toString method to MapWritable, i.e. something like:
> public String toString() {
>     return (new TreeMap<Writable, Writable>(instance)).toString();
> }



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