Tim Armstrong b7d509d761 IMPALA-7231: group plan nodes into pipelines ...

This adds some informational output to explain plans and
sends the information to the backend.

The idea is that this will make it easier to explain how Impala's
pipelined execution works and also enable future work on profile
analysis that can more intelligently group plan nodes.

Tests:
* Updated planner tests to include new output.

Change-Id: I1d10eb14d997242f445e5c5fc5362d5410370721
Reviewed-on: http://gerrit.cloudera.org:8080/10848
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

2018-08-10 19:31:30 +00:00

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