GitHub user bhavya411 opened a pull request:
https://github.com/apache/carbondata/pull/1142
[CARBONDATA-1271] Enhanced Performance for Hive Integration with Carbondata
There are various fixes added to improve the performance
- Added a DictionaryDecodeReadSupport class in Hive Package to directly
convert to ArrayWritable which is the default format for Hive
- Removed the colids checks as it was hampering performance and causing
issues with Map jobs of Hive
- Implemented getPos() method to return the rowCount
- Made changes in core classes to support Hive Query Statistics
- Improved and simplified CarbonHiveSerde
- Support for Array Type and Struct Type added in the Integration
- Build passed with all test cases executing successfully for Spark 2.1 and
Hadoop 2.7.2
- Tested Manually for all the queries
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/bhavya411/incubator-carbondata CARBONDATA-1271
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/carbondata/pull/1142.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1142
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commit 9d90aea6af7d433402e809dec957d12563a274c1
Author: Bhavya <[email protected]>
Date: 2017-07-06T06:23:03Z
Fixed performance issue for Hive Integration
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