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https://issues.apache.org/jira/browse/OODT-726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14083825#comment-14083825
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Chris A. Mattmann commented on OODT-726:
----------------------------------------

In r1615380 I made FilterTask more robust:

- OODT-726: make FilterTask more robust (found through testing XDATA)
  - if Rename_[Key] to a key that already was provided in Metadata, task would 
add to that metadata key's value list, instead of replacing it.
  - intended behavior is to replace
  - added test to expose the issue
  - fixed by using metadata.replaceMetadata instead of metadata.addMetadata

> Create MetFilter Task Example
> -----------------------------
>
>                 Key: OODT-726
>                 URL: https://issues.apache.org/jira/browse/OODT-726
>             Project: OODT
>          Issue Type: Bug
>          Components: workflow manager
>            Reporter: Chris A. Mattmann
>            Assignee: Chris A. Mattmann
>             Fix For: 0.7
>
>
> Add a task that allows a user to specify met fields to filter and not pass 
> on, or to rename. This can be used to remove specific keys or rename them 
> ahead of another task, like CAS-PGE.



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