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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 Sat, 02 May 2015 17:14:06 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6842?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14525363#comment-14525363
] 

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 30s | 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:red}-1{color} | javac |   0m 34s | The patch appears to cause the build to fail.
|
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12593076/HADOOP-6842.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / f1a152c |
| Console output | https://builds.apache.org/job/PreCommit-HADOOP-Build/6396/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
>         Attachments: 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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