GitHub user liancheng opened a pull request:
https://github.com/apache/spark/pull/3059
[SPARK-4182][SQL] Fixes ColumnStats classes for boolean, binary and complex
data types
`NoopColumnStats` was once used for binary, boolean and complex data types.
This `ColumnStats` doesn't return properly shaped column statistics and causes
caching failure if a table contains columns of the aforementioned types.
This PR adds `BooleanColumnStats`, `BinaryColumnStats` and
`GenericColumnStats`, used for boolean, binary and all complex data types
respectively. In addition, `NoopColumnStats` returns properly shaped column
statistics containing null count and row count, but this class is now used for
testing purpose only.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/liancheng/spark spark-4182
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/3059.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 #3059
----
commit 38cf5b57731bdb304d761a82f3d033efd2dcbd6c
Author: Cheng Lian <[email protected]>
Date: 2014-11-02T03:25:32Z
Fixes SPARK-4182
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