GitHub user viirya opened a pull request:
https://github.com/apache/spark/pull/8903
[SPARK-9346][SQL] Eliminate extra row conversion on data sources
JIRA: https://issues.apache.org/jira/browse/SPARK-9346
Currently we reply on `needConversion` to decide whether to do both input
and output conversion. Thus we perform an unnecessary conversion from
`InternalRow` to `Row`. We can eliminate it on some data sources such as JDBC,
JSON, Orc and Parquet.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/viirya/spark-1 fix_extra_row_conversion
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/8903.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 #8903
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commit 19b2f01845b4ffb656e4ada6e49106a1018b5f29
Author: Liang-Chi Hsieh <[email protected]>
Date: 2015-09-24T10:58:03Z
Eliminate extra row conversion on data sources.
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