Mahesh Reddy has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/16859 )

Change subject: [master] Range specific hashing at table creation time.
......................................................................


Patch Set 2:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/16859/2/src/kudu/common/partition.cc
File src/kudu/common/partition.cc:

http://gerrit.cloudera.org:8080/#/c/16859/2/src/kudu/common/partition.cc@418
PS2, Line 418:   if (!split_rows.empty()) {
             :     for (const auto& hash_schemas : range_hash_schemas) {
             :       if (!hash_schemas.empty()) {
             :         return Status::InvalidArgument("Both 'split_rows' and 
'range_hash_schemas' cannot be "
             :                                        "populated at the same 
time.");
             :       }
             :     }
> I'm not sure I follow the second point. If split_rows is non-empty, shouldn
Currently, the size of 'range_hash_schemas' matches 'range_bounds' through the 
client. So for each range_bound added, 'range_hash_schema' will either add an 
empty vector or a user defined schema. So if I add an additional check for 
'range_hash_schema' to be empty if 'split_rows' is not empty, then with this 
new interface a user cannot define both 'range_bounds' and 'split_rows' 
simultaneously.

Even if the user does not wish to define any hash schemas per range_bound, 
since an empty vector will be added to 'range_hash_schema' for that range, this 
additional check will fail if we wish to define 'split_rows' as well.



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I8f0dcbc3324f8f2d6e99b4d169fdf5c7f7dff95d
Gerrit-Change-Number: 16859
Gerrit-PatchSet: 2
Gerrit-Owner: Mahesh Reddy <[email protected]>
Gerrit-Reviewer: Andrew Wong <[email protected]>
Gerrit-Reviewer: Bankim Bhavsar <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Mahesh Reddy <[email protected]>
Gerrit-Comment-Date: Tue, 15 Dec 2020 00:39:35 +0000
Gerrit-HasComments: Yes

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