GitHub user cxzl25 opened a pull request:
https://github.com/apache/spark/pull/21311
[SPARK-24257][SQL]LongToUnsafeRowMap calculate the new size may be wrong
## What changes were proposed in this pull request?
LongToUnsafeRowMap
Calculate the new size simply by multiplying by 2
At this time, the size of the application may not be enough to store data
Some data is lost and the data read out is dirty
## How was this patch tested?
HashedRelationSuite
test("LongToUnsafeRowMap with big values")
Please review http://spark.apache.org/contributing.html before opening a
pull request.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cxzl25/spark fix_LongToUnsafeRowMap_page_size
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21311.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 #21311
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commit d9d8e62c2de7d9d04534396ab3bbf984ab16c7f5
Author: sychen <sychen@...>
Date: 2018-05-12T11:14:17Z
LongToUnsafeRowMap Calculate the new correct size
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