GitHub user windpiger opened a pull request:
https://github.com/apache/spark/pull/16700
[SPARK-19359][SQL]clear useless path after rename a partition with
upper-case by HiveExternalCatalog
## What changes were proposed in this pull request?
Hive metastore is not case preserving and keep partition columns with lower
case names.
If SparkSQL create a table with upper-case partion name use
HiveExternalCatalog, when we rename partition, it first call the HiveClient to
renamePartition, which will create a new lower case partition path, then
SparkSql rename the lower case path to the upper-case.
while if the renamed partition contains more than one depth partition ,e.g.
A=1/B=2, hive renamePartition change to a=1/b=2, then SparkSql rename it to
A=1/B=2, but the a=1 still exists in the filesystem, we should also delete it.
## How was this patch tested?
unit test added
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/windpiger/spark
clearUselessPathAfterRenamPartition
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16700.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 #16700
----
commit 6a8efddfb44f3f72c15ff6c20cd6ce341bec6da7
Author: windpiger <[email protected]>
Date: 2017-01-25T07:44:20Z
[SPARK-19359][SQL]clear useless path after rename a partition with
upper-case in HiveExternalCatalog
commit 878d45eb81ad9b1b5486689a527c0c2cdfe81b81
Author: windpiger <[email protected]>
Date: 2017-01-25T07:51:07Z
reset a tc
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