[GitHub] spark pull request: [SPARK-14387][SQL] Exceptions thrown when quer...

[rajeshbalamohan]

Github user rajeshbalamohan commented on the pull request:

https://github.com/apache/spark/pull/12293#issuecomment-216082665
  
\cc @liancheng , @rxin  - Can you please review when you find time?


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[GitHub] spark pull request: [SPARK-14387][SQL] Exceptions thrown when quer...

[rajeshbalamohan]

Github user rajeshbalamohan commented on the pull request:

https://github.com/apache/spark/pull/12293#issuecomment-213275126
  
\cc @liancheng


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[GitHub] spark pull request: [SPARK-14387][SQL] Exceptions thrown when quer...

[rajeshbalamohan]

Github user rajeshbalamohan commented on the pull request:

https://github.com/apache/spark/pull/12293#issuecomment-213207842
  
Changes:
- Rebased patch to master branch
- Removed OrcTableScan as it is not used anywhere.


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[GitHub] spark pull request: SPARK-14387. [SQL] Exceptions thrown when quer...

[AmplabJenkins]

Github user AmplabJenkins commented on the pull request:

https://github.com/apache/spark/pull/12293#issuecomment-208176244
  
Can one of the admins verify this patch?


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[GitHub] spark pull request: SPARK-14387. [SQL] Exceptions thrown when quer...

[rajeshbalamohan]

GitHub user rajeshbalamohan opened a pull request:

https://github.com/apache/spark/pull/12293

SPARK-14387. [SQL] Exceptions thrown when querying ORC tables stored …

## What changes were proposed in this pull request?
Physical files stored in Hive as ORC would have internal columns as 
_col1,_col2 etc and column mapping would be available in HiveMetastore.  It was 
possible to query ORC tables stored in Hive via Spark's beeline client in 
earlier branches, and with master branch this was broken. When reading ORC 
files, it would be good map hive schema to physical schema for supporting 
backward compatibility.  This PR addresses this issue.


## How was this patch tested?
Manual execution of TPC-DS queries at 200 GB scale.


(If this patch involves UI changes, please attach a screenshot; otherwise, 
remove this)


…in Hive

You can merge this pull request into a Git repository by running:

$ git pull https://github.com/rajeshbalamohan/spark SPARK-14387

Alternatively you can review and apply these changes as the patch at:

https://github.com/apache/spark/pull/12293.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 #12293


commit 1bc4e98ff19e76a2302003268c7a2c374647aad3
Author: Rajesh Balamohan 
Date:   2016-04-11T05:53:24Z

SPARK-14387. [SQL] Exceptions thrown when querying ORC tables stored in Hive




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