[Impala-ASF-CR] IMPALA-5315 Cast to timestamp fails for YYYY-M-D format

["Vincent Tran (Code Review)" <ge...@cloudera.org>]

Vincent Tran has posted comments on this change.

Change subject: IMPALA-5315 Cast to timestamp fails for YYYY-M-D format
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Patch Set 1:

(4 comments)

http://gerrit.cloudera.org:8080/#/c/7009/1/be/src/exprs/expr-test.cc
File be/src/exprs/expr-test.cc:

Line 2216:       TimestampValue::Parse("2001-01-21 00:00:00"));
> Should this also work for lazy years? If not, please add a test to make sur
Done


Line 2217: 
> What about timestamps with a time, like "2012-1-1 09:10:11"? Should we pars
You're right as that will likely require a rewrite of the parser to handle lazy date and time more intelligently. Though, I wasn't planning to do that here.

Added negative tests to make sure all of these cases don't parse.


http://gerrit.cloudera.org:8080/#/c/7009/1/be/src/runtime/timestamp-parse-util.h
File be/src/runtime/timestamp-parse-util.h:

Line 217:   static const int DEFAULT_LAZY_SINGLE_DATE_FMT_LEN = 8;
> single and double are often used for floating point precision. Can you thin
Done


Line 233:   static DateTimeFormatContext DEFAULT_LAZY_SINGLE_DATE_CTX;
> same here
Done


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Gerrit-MessageType: comment
Gerrit-Change-Id: Ib9a184a09d7e7783f04d47588537612c2ecec28f
Gerrit-PatchSet: 1
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Vincent Tran <vt...@cloudera.com>
Gerrit-Reviewer: Lars Volker <lv...@cloudera.com>
Gerrit-Reviewer: Vincent Tran <vt...@cloudera.com>
Gerrit-HasComments: Yes