GitHub user SlavikBaranov opened a pull request:
https://github.com/apache/spark/pull/6763
[SPARK-8309] [CORE] Support for more than 12M items in OpenHashMap
The problem occurs because the position mask `0xEFFFFFF` is incorrect. It
has zero 25th bit, so when capacity grows beyond 2^24, `OpenHashMap` calculates
incorrect index of value in `_values` array.
I've also added a size check in `rehash()`, so that it fails instead of
reporting invalid item indices.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/SlavikBaranov/spark SPARK-8309
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/6763.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 #6763
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commit 39206563dc84e0d200c605717b69ff7485ea9c54
Author: Vyacheslav Baranov <[email protected]>
Date: 2015-06-11T15:30:47Z
SPARK-8309: Support for more than 12M items in OpenHashMap
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