[Impala-ASF-CR] WiP: IMPALA-10798 : Prototype for JSON reader

["Quanlong Huang (Code Review)" <ge...@cloudera.org>]

Quanlong Huang has uploaded a new patch set (#15) to the change originally created by shikha.asrani10@gmail.com. ( http://gerrit.cloudera.org:8080/17771 )

Change subject: WiP: IMPALA-10798 : Prototype for JSON reader
......................................................................

WiP: IMPALA-10798 : Prototype for JSON reader

This prototype allows user to  create a table stored as jsonfile and
query it.
Steps to test:
- create a json table with schema specified using eligible datatypes
(int8/16/32/64/float/double/string/varchar/char/timestamp/boolean)
- add your json file (with eligble datatypes and same column names as
 schema specified in the create command) to hdfs location
- add this 'location' to your table
- run a select statement

Fix:
- arrow library is included wherever required
- json format is added to scan node base class.
- json scanner files are added, that implement methods to read the
 json file from the specified file location

Change-Id: If79364a421d862d0d837f9be694911e388d4d629
---
M CMakeLists.txt
M be/CMakeLists.txt
M be/src/exec/CMakeLists.txt
A be/src/exec/hdfs-json-scanner.cc
A be/src/exec/hdfs-json-scanner.h
M be/src/exec/hdfs-scan-node-base.cc
M bin/bootstrap_toolchain.py
M bin/impala-config.sh
A cmake_modules/FindArrow.cmake
M fe/src/main/java/org/apache/impala/catalog/HdfsFileFormat.java
10 files changed, 594 insertions(+), 7 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/71/17771/15
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: If79364a421d862d0d837f9be694911e388d4d629
Gerrit-Change-Number: 17771
Gerrit-PatchSet: 15
Gerrit-Owner: Anonymous Coward <sh...@gmail.com>
Gerrit-Reviewer: Aman Sinha <am...@cloudera.com>
Gerrit-Reviewer: Anonymous Coward <sh...@gmail.com>
Gerrit-Reviewer: Impala Public Jenkins <im...@cloudera.com>
Gerrit-Reviewer: Quanlong Huang <hu...@gmail.com>