GitHub user tejasapatil opened a pull request:
https://github.com/apache/spark/pull/14475
[SPARK-16862] Configurable buffer size in `UnsafeSorterSpillReader`
## What changes were proposed in this pull request?
Jira: https://issues.apache.org/jira/browse/SPARK-16862
`BufferedInputStream` used in `UnsafeSorterSpillReader` uses the default 8k
buffer to read data off disk. This PR makes it configurable to improve on disk
reads. I have kept the default value to be same as it was before (8k) so there
would not be any change in current behavior.
## How was this patch tested?
I am relying on the existing unit tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tejasapatil/spark spill_buffer
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14475.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 #14475
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commit 6d6feef965d07cb18b6806b588c649637f52eb56
Author: Tejas Patil <tej...@fb.com>
Date: 2016-08-03T01:00:46Z
[SPARK-16862] Configurable buffer size in `UnsafeSorterSpillReader`
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