Alexey Serbin has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/18446 )

Change subject: [tools] Add '--create_table_replication_factor' flag for 'kudu 
table copy'
......................................................................


Patch Set 3:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/18446/3/src/kudu/tools/kudu-tool-test.cc
File src/kudu/tools/kudu-tool-test.cc:

http://gerrit.cloudera.org:8080/#/c/18446/3/src/kudu/tools/kudu-tool-test.cc@608
PS3, Line 608: explict set it to 3
nit:

explicitly set to 3


http://gerrit.cloudera.org:8080/#/c/18446/3/src/kudu/tools/tool_action_table.cc
File src/kudu/tools/tool_action_table.cc:

http://gerrit.cloudera.org:8080/#/c/18446/3/src/kudu/tools/tool_action_table.cc@656
PS3, Line 656:   if (!FLAGS_create_table && 
FLAGS_create_table_replication_factor != -1) {
             :     return Status::InvalidArgument(
             :         Substitute("--create_table_replication_factor is 
meaningless when --create_table=false"));
             :   }
Thanks for adding this verification.

In Kudu, we have a special provision to handle this sort of validation when 
multiple flags involved.  Please take a look at so-called group gflags 
validators.  Search for GROUP_FLAG_VALIDATOR macros in the code (e.g., 
https://github.com/apache/kudu/blob/d216e417f7fa7daef59ec7eb2c15aadfd4e1c563/src/kudu/tools/tool_action_perf.cc#L405).

Using group flag validators instead of this code might be a bit cleaner 
approach.



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I9a4eebdcf85b5ec3666e023194b8c06d66b0a683
Gerrit-Change-Number: 18446
Gerrit-PatchSet: 3
Gerrit-Owner: Yingchun Lai <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Yingchun Lai <[email protected]>
Gerrit-Comment-Date: Wed, 27 Apr 2022 02:37:44 +0000
Gerrit-HasComments: Yes

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