[jira] [Commented] (MAPREDUCE-579) Streaming "slowmatch" documentation

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14368704#comment-14368704 ] 

Hadoop QA commented on MAPREDUCE-579:
-------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12705537/MAPREDUCE-579.patch
  against trunk revision 93d0f4a.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  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 javac{color}.  The applied patch does not increase the total number of javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version 2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-tools/hadoop-streaming.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5311//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5311//console

This message is automatically generated.

> Streaming "slowmatch" documentation
> -----------------------------------
>
>                 Key: MAPREDUCE-579
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-579
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: contrib/streaming
>    Affects Versions: 2.6.0
>            Reporter: Bo Adler
>            Assignee: Harsh J
>            Priority: Trivial
>         Attachments: MAPREDUCE-579.patch
>
>
> The documentation for the Streaming module do not include any mention of the "slowmatch" parameter, which checks for CDATA sections while looking for XML records.
> An important point is that "slowmatch=true" violates the principle of least surprise: the "begin" and "end" parameters become regular expressions instead of exact strings.  This is probably a useful feature, but should definitely be noted since users will be tempted to use the XML record reader on not-strictly-xml files, which may require escaping the "begin" and "end" patterns.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)