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From "Mostafa Mokhtar (Code Review)" <ger...@cloudera.org>
Subject [Impala-CR](cdh5-trunk) IMPALA-2736: Basic column-wise slot materialization in Parquet scanner.
Date Fri, 22 Apr 2016 22:54:23 GMT
Mostafa Mokhtar has posted comments on this change.

Change subject: IMPALA-2736: Basic column-wise slot materialization in Parquet scanner.
......................................................................


Patch Set 5:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/2779/5/be/src/util/rle-encoding.h
File be/src/util/rle-encoding.h:

Line 250:   if (repeat_count_ == 0) {
Compared against "repeat_count_ + literal_count_ == 0" and the current change in review is
marginaly faster, both are still significantly better than 
 if (UNLIKELY(literal_count_ == 0 && repeat_count_ == 0)) {
     if (!NextCounts<T>()) return false;
  }


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Gerrit-MessageType: comment
Gerrit-Change-Id: I72a613fa805c542e39df20588fb25c57b5f139aa
Gerrit-PatchSet: 5
Gerrit-Project: Impala
Gerrit-Branch: cdh5-trunk
Gerrit-Owner: Alex Behm <alex.behm@cloudera.com>
Gerrit-Reviewer: Alex Behm <alex.behm@cloudera.com>
Gerrit-Reviewer: Mostafa Mokhtar <mmokhtar@cloudera.com>
Gerrit-Reviewer: Skye Wanderman-Milne <skye@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstrong@cloudera.com>
Gerrit-HasComments: Yes

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