GitHub user priyankagargnitk opened a pull request:
https://github.com/apache/spark/pull/15449
[SPARK-17884][SQL] To resolve Null pointer exception when casting from
empty string to interval type.
## What changes were proposed in this pull request?
This change adds a check in castToInterval method of Cast expression , such
that if converted value is null , then isNull variable should be set to true.
Earlier, the expression Cast(Literal(), CalendarIntervalType) was throwing
NullPointerException because of the above mentioned reason.
## How was this patch tested?
Added test case in CastSuite.scala
jira entry for detail: https://issues.apache.org/jira/browse/SPARK-17884
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/priyankagargnitk/spark SPARK-17884
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15449.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 #15449
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commit 9dc99adecfadb60ef402f68e956a0f94734b1226
Author: prigarg <prig...@adobe.com>
Date: 2016-10-12T08:51:13Z
[SPARK-17884][SQL] To resolve Null pointer exception when casting from
empty string to interval type.
## What changes were proposed in this pull request?
This change adds a check in castToInterval method of Cast expression , such
that if converted value is null , then isNull variable should be set to true.
Earlier, the expression Cast(Literal(), CalendarIntervalType) was throwing
NullPointerException because of the above mentioned reason.
## How was this patch tested?
Added test case in CastSuite.scala
jira entry for detail: https://issues.apache.org/jira/browse/SPARK-17884
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