GitHub user chenghao-intel opened a pull request:
https://github.com/apache/spark/pull/6402
[SPARK-7859] [SQL] Collect_set() behavior differences which fails the unit
test under jdk8
To reproduce that:
```
JAVA_HOME=/home/hcheng/Java/jdk1.8.0_45 | build/sbt -Phadoop-2.3 -Phive
'test-only
org.apache.spark.sql.hive.execution.HiveWindowFunctionQueryWithoutCodeGenSuite'
```
A simple workaround to fix that is update the original query, for getting
the output size instead of the exact elements of the array (output by
collect_set())
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/chenghao-intel/spark windowing
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/6402.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 #6402
----
commit 7062da7c779c091cfb274d4b4aec0b88cac1a64c
Author: Cheng Hao <[email protected]>
Date: 2015-05-26T02:55:26Z
fix the collect_set() behaviour differences under different versions of JDK
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