Kurt Deschler has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/17104 )

Change subject: IMPALA-10535: Add interface to ImpalaServer for execution of 
externally compiled statements
......................................................................


Patch Set 7:

(13 comments)

http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/runtime/query-driver.cc
File be/src/runtime/query-driver.cc:

http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/runtime/query-driver.cc@67
PS7, Line 67: exec_request
> Nit: I think it would be clearer to call this 'external_exec_request'
Done


http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/service/impala-hs2-server.cc
File be/src/service/impala-hs2-server.cc:

http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/service/impala-hs2-server.cc@458
PS7, Line 458: execRequest
> nit: exec_request (here and several other places in this patch)
Done


http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/service/impala-server.h
File be/src/service/impala-server.h:

http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/service/impala-server.h@678
PS7, Line 678:   /// have been checked out.
> comment might benefit from a brief mention of what 'exec_request' is
Done


http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/service/impala-server.cc
File be/src/service/impala-server.cc:

http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/service/impala-server.cc@319
PS7, Line 319:     
"TExecRequest-{internal|external}.{query_id.hi}-{query_id.lo}");
> might be worth explicitly saying this is for debugging
Done


http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/service/impala-server.cc@1114
PS7, Line 1114: if (FLAGS_dump_exec_request_path.empty())
              :     return;
> nit: this can go on one line (and if it couldn't, Impala always uses braces
Done


http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/service/impala-server.cc@1118
PS7, Line 1118: FLAGS_dump_exec_request_path + "/TExecRequest-" + dumpType + 
"." +
              :       std::to_string(queryID.hi) + "-" + 
std::to_string(queryID.lo)
> For constructing the filename, I think it would be cleaner to use the Subst
Done


http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/service/impala-server.cc@1140
PS7, Line 1140: exec_request
> It might be clearer for this to be 'external_exec_request' to emphasize tha
Done


http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/service/impala-server.cc@1191
PS7, Line 1191: exec_request
> Nit: From a style point, we prefer explicit checks against nullptr ("exec_r
Done


http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/service/impala-server.cc@1198
PS7, Line 1198: exec_request
> Nit: Same here (use explicit nullptr checks)
Done


http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/service/impala-server.cc@1202
PS7, Line 1202: // Update the externally provided exec_request with Impala's 
query_id()
              :       (*query_handle)->SetExecRequestQueryId(query_id);
              :       // Update coordinator related internal addresses
              :       (*query_handle)->SetExecRequestHostname(
              :           
ExecEnv::GetInstance()->configured_backend_address().hostname);
              :       
(*query_handle)->SetExecRequestKrpcAddress(ExecEnv::GetInstance()->krpc_address());
              :       // Update the field of 'local_time_zone' of 'query_ctx'.
              :       
(*query_handle)->SetExecRequestLocalTimeZone(query_ctx.local_time_zone);
> might be nice to move this into QueryDriver::SetExternalPlan()
Done


http://gerrit.cloudera.org:8080/#/c/17104/7/be/src/service/impala-server.cc@1213
PS7, Line 1213: 
RETURN_IF_ERROR((*query_handle)->UpdateQueryStatus(exec_status));
> What's the point of this call? I think it will always be called with OK and
Removed


http://gerrit.cloudera.org:8080/#/c/17104/7/common/thrift/CMakeLists.txt
File common/thrift/CMakeLists.txt:

http://gerrit.cloudera.org:8080/#/c/17104/7/common/thrift/CMakeLists.txt@70
PS7, Line 70:       # Also do not generate ImpalaService.thrift because the 
generated code doesn't
            :       # compile with hive if the thrift version in hive is 0.9.0
> Nit: We can remove this part of the comment
Done


http://gerrit.cloudera.org:8080/#/c/17104/7/fe/pom.xml
File fe/pom.xml:

http://gerrit.cloudera.org:8080/#/c/17104/7/fe/pom.xml@434
PS7, Line 434:       <groupId>org.apache.hive</groupId>
             :       <artifactId>hive-classification</artifactId>
             :       <version>${hive.version}</version>
> Does this bring in any dependencies that we need to exclude?
I checked both and only hive-classification.jar was added



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Iace716dd67290f08441857dc02d2428b0e335eaa
Gerrit-Change-Number: 17104
Gerrit-PatchSet: 7
Gerrit-Owner: Kurt Deschler <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Joe McDonnell <[email protected]>
Gerrit-Reviewer: John Sherman <[email protected]>
Gerrit-Reviewer: Kurt Deschler <[email protected]>
Gerrit-Reviewer: Thomas Tauber-Marshall <[email protected]>
Gerrit-Comment-Date: Tue, 02 Mar 2021 15:34:12 +0000
Gerrit-HasComments: Yes

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