GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/14636
[SPARK-17053][SQL] Support `hive.exec.drop.ignorenonexistent`
## What changes were proposed in this pull request?
If `hive.exec.drop.ignorenonexistent` is set `true`, `DROP` statement is
assumed to have `IF EXISTS` clause.
**Reported Error Scenario**
```scala
scala> sql("set hive.exec.drop.ignorenonexistent=true")
res1: org.apache.spark.sql.DataFrame = [key: string, value: string]
scala> sql("drop table a")
org.apache.spark.sql.AnalysisException: Table to drop '`a`' does not exist;
```
Refer https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL .
## How was this patch tested?
Pass the Jenkins test including a new test case.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark
SPARK-17053-HIVE-NON-EXISTENCE
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14636.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 #14636
----
commit 0d25b25230a3629e0df9a98f9e5c0606581fdd02
Author: Dongjoon Hyun <dongj...@apache.org>
Date: 2016-08-14T17:53:02Z
[SPARK-17053][SQL] Support `hive.exec.drop.ignorenonexistent`
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