Alexey Serbin has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/18515 )

Change subject: [master] KUDU-2671: Range specific hashing during table alter 
op.
......................................................................


Patch Set 4:

(7 comments)

http://gerrit.cloudera.org:8080/#/c/18515/4/src/kudu/master/catalog_manager.cc
File src/kudu/master/catalog_manager.cc:

http://gerrit.cloudera.org:8080/#/c/18515/4/src/kudu/master/catalog_manager.cc@2609
PS4, Line 2609:   PartitionSchema partition_schema;
              :   RETURN_NOT_OK(PartitionSchema::FromPB(
              :       l.data().pb.partition_schema(), schema, 
&partition_schema));
> Maybe this can be a different patch, but the new field 'ranges_with_hash_sc
Indeed -- I'm not sure I see where the corresponding run-time structures are 
being updated to reflect adding a new range with custom hash schema.


http://gerrit.cloudera.org:8080/#/c/18515/4/src/kudu/master/master-test.cc
File src/kudu/master/master-test.cc:

http://gerrit.cloudera.org:8080/#/c/18515/4/src/kudu/master/master-test.cc@952
PS4, Line 952: char *
nit: our styling guide dictates that the asterisk should stick to the type


http://gerrit.cloudera.org:8080/#/c/18515/4/src/kudu/master/master-test.cc@963
PS4, Line 963:   vector<HashSchema> range_hash_schemas{{{{"key"}, 3, 0}}};
nit: add 'const' or maybe even get rid of the variable inlining the value at 
line 968?


http://gerrit.cloudera.org:8080/#/c/18515/4/src/kudu/master/master-test.cc@964
PS4, Line 964: HashSchema table_wide_hash_schema{{{"key"}, 2, 0}};
ditto


http://gerrit.cloudera.org:8080/#/c/18515/4/src/kudu/master/master-test.cc@988
PS4, Line 988: auto&
nit: const auto& ?


http://gerrit.cloudera.org:8080/#/c/18515/4/src/kudu/master/master-test.cc@1008
PS4, Line 1008: LOG(INFO) << "Altering Table";
Does it help in automated testing if keeping this INFO log line?  If not, 
consider removing this after debugging/troubleshooting is complete for this 
test scenario.


http://gerrit.cloudera.org:8080/#/c/18515/4/src/kudu/master/master-test.cc@1011
PS4, Line 1011: ASSERT_STR_CONTAINS(resp.error().status().DebugString(),
              :                       "varying number of hash dimensions per 
range is not yet supported");
> Can you add another test case where a range partition with a custom hash sc
+1



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Iea9e3317d172c9ae76662c44b21fca9a4819930a
Gerrit-Change-Number: 18515
Gerrit-PatchSet: 4
Gerrit-Owner: Abhishek Chennaka <[email protected]>
Gerrit-Reviewer: Abhishek Chennaka <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Mahesh Reddy <[email protected]>
Gerrit-Comment-Date: Tue, 24 May 2022 22:20:26 +0000
Gerrit-HasComments: Yes

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