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

["Gabriel Reid (JIRA)" <ji...@apache.org>]

Gabriel Reid created CRUNCH-371:
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             Summary: 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


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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