[jira] [Commented] (CRUNCH-371) AvroPathPerKeyTarget doesn't work with empty input

["Josh Wills (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CRUNCH-371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13955200#comment-13955200 ] 

Josh Wills commented on CRUNCH-371:
-----------------------------------

+1 from me. FWIW, I think it's fine to commit these small fixes immediately w/a review afterwards.

> AvroPathPerKeyTarget doesn't work with empty input
> --------------------------------------------------
>
>                 Key: CRUNCH-371
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-371
>             Project: Crunch
>          Issue Type: Bug
>            Reporter: Gabriel Reid
>         Attachments: CRUNCH-371.patch
>
>
> The AvroPathPerKeyTarget doesn't work properly when there is nothing to be output (for example, if all records have been filtered out somehow). This situation results in an exception like the following on HDFS on hadoop-1 
> {code}
> java.io.IOException: java.lang.IllegalArgumentException: Reducer output
> name 'out0' cannot be parsed
> {code}
> and an FileNotFoundException on hadoop-2.
> In both cases, there should be no exception, and no output should be written. More background on this in the following mailing list discussion:
> http://mail-archives.apache.org/mod_mbox/crunch-user/201403.mbox/%3cCACijwiagOJsKVsDq1_x6tbyFhWEZeCyNMV-jpmwjzhQ8CCSF-g@mail.gmail.com%3e



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