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Posted to dev@drill.apache.org by Chris Westin <ch...@gmail.com> on 2015/10/05 23:17:15 UTC

How do I add projection capabilities to an operator that doesn't have them?

In particular, I'm trying to work on
https://issues.apache.org/jira/browse/DRILL-3876 in order to reduce the
amount of memory downstream operators require.

I started looking at Projector.java and ProjectorTemplate.java, but it
seems like copying that pattern wouldn't be enough -- how do I get the
configuration that is passed in their setup to remove the large unneeded
column from the flatten output?