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From "Michael Moser (JIRA)" <j...@apache.org>
Subject [jira] [Created] (NIFI-378) MergeContent in Defragment mode will merge fragments without checking index
Date Tue, 24 Feb 2015 21:23:04 GMT
Michael Moser created NIFI-378:
----------------------------------

             Summary: MergeContent in Defragment mode will merge fragments without checking
index
                 Key: NIFI-378
                 URL: https://issues.apache.org/jira/browse/NIFI-378
             Project: Apache NiFi
          Issue Type: Bug
          Components: Extensions
    Affects Versions: 0.0.1
            Reporter: Michael Moser
            Priority: Minor


When in Defragment mode, the MergeContent processor looks for fragment.identifier and fragment.count
attributes in order to place FlowFiles in the correct bin.  The fragment.index attribute is
ignored.

If you happen to have many FlowFile in the queue to MergeContent, and they all have fragment.identifier=foo
and fragment.count=2, then it will merge two FlowFiles that have fragment.index=1 or it will
merge two FlowFiles that have fragment.index=2.

Granted this may seem odd.  The use case is to give the MergeContent processor two input queues.
 We configure one queue to contain files with fragment.index=1 and the other queue to contain
files with fragment.index=2.  We want one file from each queue to be merged.  Instead it will
merge two files from the same queue.



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