Marcel Kornacker has posted comments on this change.

Change subject: IMPALA-3902: Scheduler improvements for running multiple 
fragment instances on a single backend
......................................................................


Patch Set 10:

(4 comments)

http://gerrit.cloudera.org:8080/#/c/4054/10/be/src/runtime/coordinator.cc
File be/src/runtime/coordinator.cc:

PS10, Line 2083: // TODO: use FragmentInstanceState::error_log_ instead
> can you mention that? It's hard to keep track of all the TODOs, it'll make 
Done


http://gerrit.cloudera.org:8080/#/c/4054/10/be/src/scheduling/query-schedule.h
File be/src/scheduling/query-schedule.h:

PS10, Line 90:  shared across fragment instances
> This owns the vector of fragment instance exec params, so I think it's conf
it is effectively shared between FInstanceExecParams (through field 
fragment_exec_params). it's a circular structure.


http://gerrit.cloudera.org:8080/#/c/4054/12/be/src/scheduling/query-schedule.h
File be/src/scheduling/query-schedule.h:

Line 192:     const TPlanFragment& fragment = GetContainingFragment(id);
> TODO-MT: remove, only needed on the ST path
Done


http://gerrit.cloudera.org:8080/#/c/4054/10/common/thrift/Planner.thrift
File common/thrift/Planner.thrift:

PS10, Line 35:   // TODO: should this be called idx, to distinguish more 
clearly from a
             :   // globally unique id?
> let's think about this some more tomorrow.
Done


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Gerrit-MessageType: comment
Gerrit-Change-Id: I240445199e22f009f4e72fdb8754eb8d77e3d680
Gerrit-PatchSet: 10
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Marcel Kornacker <mar...@cloudera.com>
Gerrit-Reviewer: Alex Behm <alex.b...@cloudera.com>
Gerrit-Reviewer: Dan Hecht <dhe...@cloudera.com>
Gerrit-Reviewer: Henry Robinson <he...@cloudera.com>
Gerrit-Reviewer: Lars Volker <l...@cloudera.com>
Gerrit-Reviewer: Marcel Kornacker <mar...@cloudera.com>
Gerrit-Reviewer: Matthew Jacobs <m...@cloudera.com>
Gerrit-Reviewer: Mostafa Mokhtar <mmokh...@cloudera.com>
Gerrit-HasComments: Yes

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