Csaba Ringhofer has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/11521 )

Change subject: IMPALA-7595: Check the validity of the time part of Parquet 
timestamps
......................................................................


Patch Set 4:

(3 comments)

http://gerrit.cloudera.org:8080/#/c/11521/3//COMMIT_MSG
Commit Message:

http://gerrit.cloudera.org:8080/#/c/11521/3//COMMIT_MSG@30
PS3, Line 30:
> Yeah, but the current error message is a bit misleading IMO, since currentl
I have thought a bit about this and added a new error code. The rationale is 
that if someone will work on the encoder, then the distinct error codes can 
help in identifying bugs.


http://gerrit.cloudera.org:8080/#/c/11521/3/be/src/exec/parquet-column-readers.cc
File be/src/exec/parquet-column-readers.cc:

http://gerrit.cloudera.org:8080/#/c/11521/3/be/src/exec/parquet-column-readers.cc@697
PS3, Line 697: !TimestampValue::IsValidDate(val->date())
             :       || !TimestampValue::IsValidTime(val->time())
> Would it make sense to merge these two functions and have a single Timestam
I have kept them as separate functions to be able to distinguish between the 
two kind of errors.

Another reason is that https://gerrit.cloudera.org/#/c/11183/ handles the two 
errors differently - out of range dates are replaced with not_a_date, while 
invalid times lead to DCHECK. It is done this way to avoid the performance 
impact of checking times by relying on callers giving correct values. I plan to 
check dates with DCHECK too, but that will need some additional changes.


http://gerrit.cloudera.org:8080/#/c/11521/3/be/src/runtime/timestamp-value.h
File be/src/runtime/timestamp-value.h:

http://gerrit.cloudera.org:8080/#/c/11521/3/be/src/runtime/timestamp-value.h@195
PS3, Line 195: than
> nit: than
Done



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ibc0ae651b6a0a028c61a15fd069ef9e904231058
Gerrit-Change-Number: 11521
Gerrit-PatchSet: 4
Gerrit-Owner: Csaba Ringhofer <csringho...@cloudera.com>
Gerrit-Reviewer: Csaba Ringhofer <csringho...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Reviewer: Zoltan Borok-Nagy <borokna...@cloudera.com>
Gerrit-Comment-Date: Fri, 28 Sep 2018 13:20:50 +0000
Gerrit-HasComments: Yes

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