[Impala-ASF-CR] IMPALA-8110: Fix the Parquet stats filtering issue to correctly handle narrowed int types

["Wenzhe Zhou (Code Review)" <ge...@cloudera.org>]

Wenzhe Zhou has uploaded a new patch set (#3). ( http://gerrit.cloudera.org:8080/15087 )

Change subject: IMPALA-8110: Fix the Parquet stats filtering issue to correctly handle narrowed int types
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IMPALA-8110: Fix the Parquet stats filtering issue to correctly handle
narrowed int types

This patch add validation for the paired stats value for int8 and int16
data type when reading min/max column stats value from Parquet file.

Testing:
1) Manual test - create table with column as int32 type, intert some values,
   then alter table to change the column data type as tinyint (int8) or
   smallint (int16), make sure the query return correct number of rows when
   PARQUET_READ_STATISTICS is set as 1.
2) Passed pre-review-test on Jenkins.

Change-Id: Id8bdaf4c4b2d0c6ea26d6e9bf013afca647e53a1
---
M be/src/exec/parquet/hdfs-parquet-scanner.cc
M be/src/exec/parquet/parquet-column-stats.cc
M be/src/exec/parquet/parquet-column-stats.h
3 files changed, 40 insertions(+), 9 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/87/15087/3
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Id8bdaf4c4b2d0c6ea26d6e9bf013afca647e53a1
Gerrit-Change-Number: 15087
Gerrit-PatchSet: 3
Gerrit-Owner: Wenzhe Zhou <wz...@cloudera.com>
Gerrit-Reviewer: Bikramjeet Vig <bi...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <im...@cloudera.com>