Riza Suminto has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/21458 )

Change subject: IMPALA-13107: Don't start query on executor if instance number 
equals 0
......................................................................


Patch Set 1:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/21458/1/be/src/service/control-service.cc
File be/src/service/control-service.cc:

http://gerrit.cloudera.org:8080/#/c/21458/1/be/src/service/control-service.cc@154
PS1, Line 154: fragment_info.fragments.size() == 0
             :       || fragment_info.fragment_instance_ctxs.size() == 0
Can you also add DCHECK in Coordinator::BackendState::SetRpcParams verifying 
that these vectors are never left empty by coordinator?

ImpalaInternalService.thrift mention this, but I don't see any assertion for it:

// The Thrift portion of the execution parameters of a single fragment 
instance. Every
// fragment instance will also have a corresponding PlanFragmentInstanceCtxPB 
with the
// same fragment_idx.
// TODO: convert the rest of this struct to protobuf
struct TPlanFragmentInstanceCtx {



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ie92ee120f1e9369f8dc2512792a05b7f8be5f007
Gerrit-Change-Number: 21458
Gerrit-PatchSet: 1
Gerrit-Owner: Wenzhe Zhou <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Riza Suminto <[email protected]>
Gerrit-Comment-Date: Tue, 28 May 2024 19:22:41 +0000
Gerrit-HasComments: Yes

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