Dan Burkert has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/8830 )

Change subject: KUDU-721: Support for Decimal type, Part 1 (Server, C++ Client)
......................................................................


Patch Set 20:

(4 comments)

http://gerrit.cloudera.org:8080/#/c/8830/20/src/kudu/common/partial_row-test.cc
File src/kudu/common/partial_row-test.cc:

http://gerrit.cloudera.org:8080/#/c/8830/20/src/kudu/common/partial_row-test.cc@227
PS20, Line 227:   EXPECT_EQ("Invalid argument: value 1000000 out of range for 
decimal column 'decimal_val'",
This error message may be clearer if it printed the scaled value instead of the 
unscaled value (10000.00 vs 1000000).


http://gerrit.cloudera.org:8080/#/c/8830/20/src/kudu/util/decimal_util.h
File src/kudu/util/decimal_util.h:

http://gerrit.cloudera.org:8080/#/c/8830/20/src/kudu/util/decimal_util.h@63
PS20, Line 63:   std::string DecimalToString(int128_t value, int8_t scale = 
kDefaultDecimalScale);
Is having a default scale a benefit here?  I'd expect that if the scale is 
unknown the caller should use int128 stringification instead.


http://gerrit.cloudera.org:8080/#/c/8830/20/src/kudu/util/decimal_util.cc
File src/kudu/util/decimal_util.cc:

http://gerrit.cloudera.org:8080/#/c/8830/20/src/kudu/util/decimal_util.cc@28
PS20, Line 28: int128_t MaxUnscaledDecimal(int8_t precision) {
Needs test


http://gerrit.cloudera.org:8080/#/c/8830/20/src/kudu/util/decimal_util.cc@32
PS20, Line 32:   while (precision) {
I think a for loop would be more idiomatic here.

    for (; precision > 0; precision--)



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I3b06142f43c66973f36376bd2c88ca6f8d9f7632
Gerrit-Change-Number: 8830
Gerrit-PatchSet: 20
Gerrit-Owner: Grant Henke <[email protected]>
Gerrit-Reviewer: Adar Dembo <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Dan Burkert <[email protected]>
Gerrit-Reviewer: Grant Henke <[email protected]>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Tidy Bot
Gerrit-Reviewer: Todd Lipcon <[email protected]>
Gerrit-Comment-Date: Tue, 30 Jan 2018 22:34:57 +0000
Gerrit-HasComments: Yes

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