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.
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