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https://issues.apache.org/jira/browse/STORM-1505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15128298#comment-15128298
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ASF GitHub Bot commented on STORM-1505:
---------------------------------------
Github user ptgoetz commented on the pull request:
https://github.com/apache/storm/pull/1050#issuecomment-178592968
@arunmahadevan Yes, I'm talking about adding the following:
```java
public Stream filter(Fields inputFields, Filter filter)
```
I know it's minor, but I'm thinking of users having existing `Filter`
implementations that may depend on specific fields being selected.
> Add map, flatMap and filter operations in trident api
> -----------------------------------------------------
>
> Key: STORM-1505
> URL: https://issues.apache.org/jira/browse/STORM-1505
> Project: Apache Storm
> Issue Type: Improvement
> Reporter: Arun Mahadevan
> Assignee: Arun Mahadevan
>
> map and flatMap are common stream operations.
> Right now in trident this has to be implemented via each() which also sends
> the input field values in addition to the mapped field values, so the map and
> flatmap should make things slightly more efficient and easy.
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