[
https://issues.apache.org/jira/browse/MAPREDUCE-3542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13432987#comment-13432987
]
Jarek Jarcec Cecho commented on MAPREDUCE-3542:
-----------------------------------------------
Hi Guys,
I was investigating related issue in Sqoop project(http://sqoop.apache.org/).
Basically we are reporting number of written filesystem bytes back to the user
and on Hadoop 0.23/2.x we're always getting 0. I've noticed that there was some
refactorization in FileSystem counter related code and found this issue
requesting backward compatibility.
Included patch seems to be adding counter "FileSystemCounter":
{code:title=hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/counters/AbstractCounters.java:84}
legacyMap.put("FileSystemCounter", FileSystemCounter.class.getName());
{code}
But it appears that original name is "FileSystemCounters" (Notice the plural
"s" at the end of name):
{code:title=src/mapred/org/apache/hadoop/mapred/Task.java:91 (0.20.2)}
protected static final String FILESYSTEM_COUNTER_GROUP = "FileSystemCounters";
{code}
{code:title=src/mapred/org/apache/hadoop/mapred/Task.java:109 (1.0.3)}
protected static final String FILESYSTEM_COUNTER_GROUP = "FileSystemCounters";
{code}
I therefore believe that this counter should be renamed in order to provide
backward compatibility. I might fix this discrepancy in Sqoop, but I believe
that other projects/users might also be affected and therefore it would be
better to fix it in upstream. I wanted to reopen this ticket, but apparently I
do not have enough privileges to do so. Could I ask anyone with proper
privileges to do that or should I create new JIRA instead?
> Support "FileSystemCounter" legacy counter group name for compatibility
> -----------------------------------------------------------------------
>
> Key: MAPREDUCE-3542
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3542
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.23.0
> Reporter: Tom White
> Assignee: Tom White
> Fix For: 0.23.1
>
> Attachments: MAPREDUCE-3542.patch
>
>
> The group name changed from "FileSystemCounter" to
> "org.apache.hadoop.mapreduce.FileSystemCounter", but we should support the
> old one for compatibility's sake. This came up in PIG-2347.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
