[
https://issues.apache.org/jira/browse/MAPREDUCE-5247?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Robert Joseph Evans resolved MAPREDUCE-5247.
--------------------------------------------
Resolution: Won't Fix
I am happy to hear arguments as to why this is really necessary, but I would
rather have my job fail then have the job give me partial/inconsistent results.
> FileInputFormat should filter files with '._COPYING_' sufix
> -----------------------------------------------------------
>
> Key: MAPREDUCE-5247
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5247
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Stan Rosenberg
>
> FsShell copy/put creates staging files with '._COPYING_' suffix. These files
> should be considered hidden by FileInputFormat. (A simple fix is to add the
> following conjunct to the existing hiddenFilter:
> {code}
> !name.endsWith("._COPYING_")
> {code}
> After upgrading to CDH 4.2.0 we encountered this bug. We have a legacy data
> loader which uses 'hadoop fs -put' to load data into hourly partitions. We
> also have intra-hourly jobs which are scheduled to execute several times per
> hour using the same hourly partition as input. Thus, as the new data is
> continuously loaded, these staging files (i.e., ._COPYING_) are breaking our
> jobs (since when copy/put completes staging files are moved).
> As a workaround, we've defined a custom input path filter and loaded it with
> "mapred.input.pathFilter.class".
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
