Andrew Wong has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/17025 )

Change subject: KUDU-2671: Adds new field to PartitionSchema.
......................................................................


Patch Set 9:

(10 comments)

http://gerrit.cloudera.org:8080/#/c/17025/9/src/kudu/client/scan_token-internal.cc
File src/kudu/client/scan_token-internal.cc:

http://gerrit.cloudera.org:8080/#/c/17025/9/src/kudu/client/scan_token-internal.cc@345
PS9, Line 345:
nit: &partition_schema_pb is an argument of ToPB(), so it should be aligned as 
such.


http://gerrit.cloudera.org:8080/#/c/17025/9/src/kudu/common/partition-test.cc
File src/kudu/common/partition-test.cc:

PS9:
Could you add some negative tests for malformed partition schemas too?


http://gerrit.cloudera.org:8080/#/c/17025/9/src/kudu/common/partition-test.cc@1303
PS9, Line 1303:   PartitionSchema partition_schema;
              :   ASSERT_OK(PartitionSchema::FromPB(pb, schema, 
&partition_schema));
nit: would it make sense to define some helper function that takes a 
PartitionSchemaPB and does this deserialize/serialize/deserialize dance and 
equality checks? Maybe we could use that in some of the other tests for some 
extra validation


http://gerrit.cloudera.org:8080/#/c/17025/9/src/kudu/common/partition-test.cc@1347
PS9, Line 1347:   ASSERT_EQ(true, partition_schema.Equals(partition_schema1));
nit: use ASSERT_TRUE() for this


http://gerrit.cloudera.org:8080/#/c/17025/9/src/kudu/common/partition.cc
File src/kudu/common/partition.cc:

http://gerrit.cloudera.org:8080/#/c/17025/9/src/kudu/common/partition.cc@204
PS9, Line 204:     for (int j = 0; j < ops.size(); j++) {
In a valid message, do we ever expect there to be more than two ops? If not, 
could we return an error if ops.size() isn't 2? If so, could we also assume 
ops[0] is the RANGE_LOWER_BOUND and ops[1] is the RANGE_UPPER_BOUND? That might 
make this code block a bit easier to read.


http://gerrit.cloudera.org:8080/#/c/17025/9/src/kudu/common/partition.cc@209
PS9, Line 209: EXCLUSIVE_RANGE_LOWER_BOUND
The ToPB method seems to only have RANGE_LOWER_BOUND and RANGE_UPPER_BOUND. Do 
we actually need the EXCLUSIVE/INCLUSIVE enums here?


http://gerrit.cloudera.org:8080/#/c/17025/9/src/kudu/common/partition.cc@213
PS9, Line 213:
nit: add a space


http://gerrit.cloudera.org:8080/#/c/17025/9/src/kudu/common/partition.cc@216
PS9, Line 216:
             :           if (op.type == 
RowOperationsPB::EXCLUSIVE_RANGE_LOWER_BOUND) {
             :             
RETURN_NOT_OK(partition_schema->MakeLowerBoundRangePartitionKeyInclusive(
             :                 op.split_row.get()));
             :           }
             :           if (ops[j].type == 
RowOperationsPB::INCLUSIVE_RANGE_UPPER_BOUND) {
             :             
RETURN_NOT_OK(partition_schema->MakeUpperBoundRangePartitionKeyExclusive(
             :                 ops[j].split_row.get()));
             :           }
Why don't we need to do anything in the RANGE_LOWER_BOUND or RANGE_UPPER_BOUND 
cases? Could use a comment.


http://gerrit.cloudera.org:8080/#/c/17025/9/src/kudu/common/partition.cc@249
PS9, Line 249: RETURN_NOT_OK(
             :         partition_schema->EncodeRangeBounds(range_bounds, 
range_hash_schema, schema,
             :                                             &partit
nit: spacing


http://gerrit.cloudera.org:8080/#/c/17025/9/src/kudu/common/partition.cc@274
PS9, Line 274:     Arena arena(256);
I'm curious if there are performance implications of allocating this 
repeatedly. Is it possible to / would it make sense to reset and reuse the same 
arena?



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ic5d8615ab9967fdb40292b9c77eb68a19baeca1d
Gerrit-Change-Number: 17025
Gerrit-PatchSet: 9
Gerrit-Owner: Mahesh Reddy <[email protected]>
Gerrit-Reviewer: Andrew Wong <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Mahesh Reddy <[email protected]>
Gerrit-Reviewer: Tidy Bot (241)
Gerrit-Comment-Date: Tue, 30 Mar 2021 07:29:03 +0000
Gerrit-HasComments: Yes

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