GitHub user rajeshbalamohan opened a pull request:
https://github.com/apache/spark/pull/12661
[SPARK-14752][SQL] LazilyGenerateOrdering throws NullPointerException
## What changes were proposed in this pull request?
LazilyGenerateOrdering throws NullPointerException when clubbed with
TakeOrderedAndProjectExec. This causes simple queries like "select i_item_id
from item order by i_item_id limit 10;" would fail in spark-sql. When
deserializing in DirectTaskResult, it goes through nested structure in Kryo
causing NPE for generatedOrdering.
## How was this patch tested?
Manual testing by running multiple SQL queries in multi node cluster.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rajeshbalamohan/spark SPARK-14752
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12661.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 #12661
----
commit e83c9bc87acc794ca3e9a37c999c05550d425e2b
Author: Rajesh Balamohan <rbalamo...@apache.org>
Date: 2016-04-25T13:09:58Z
[SPARK-14752][SQL] LazilyGenerateOrdering throws NullPointerException with
TakeOrderedAndProject
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