GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/14114
[SPARK-16458][SQL] SessionCatalog should support `listColumns` for
temporary tables
## What changes were proposed in this pull request?
Temporary tables are used frequently, but `spark.catalog.listColumns` does
not support those tables. This PR make `SessionCatalog` supports temporary
table column listing.
**Before**
```scala
scala> spark.range(10).createOrReplaceTempView("t1")
scala> spark.catalog.listTables().collect()
res1: Array[org.apache.spark.sql.catalog.Table] = Array(Table[name='t1',
tableType='TEMPORARY', isTemporary='true'])
scala> spark.catalog.listColumns("t1").collect()
org.apache.spark.sql.AnalysisException: Table 't1' does not exist in
database 'default'.;
```
**After**
```
scala> spark.catalog.listColumns("t1").collect()
res2: Array[org.apache.spark.sql.catalog.Column] = Array(Column[name='id',
description='id', dataType='bigint', nullable='false', isPartition='false',
isBucket='false'])
```
## How was this patch tested?
Pass the Jenkins tests including a new testcase.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark SPARK-16458
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14114.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 #14114
----
commit 46196a44d18426a107b480b8157c5accedecbbd1
Author: Dongjoon Hyun <[email protected]>
Date: 2016-07-09T09:54:39Z
[SPARK-16458][SQL] SessionCatalog should support `listColumns` for
temporary tables
----
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