GitHub user wangyum opened a pull request:
https://github.com/apache/spark/pull/17505
[SPARK-20187][SQL] Replace loadTable with moveFile to speed up load table
for many output files
## What changes were proposed in this pull request?
[HiveClientImpl.loadTable](https://github.com/apache/spark/blob/v2.1.0/sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveClientImpl.scala#L667)
load files one by one, so this step will take a long time if a job generates
many files. This PR replace `Hive.loadTable` with
[`Hive.moveFile`](https://github.com/apache/hive/blob/release-1.2.1/ql/src/java/org/apache/hadoop/hive/ql/metadata/Hive.java#L2567)
to speed up this step for `create table tableName as select ...` and `insert
overwrite table tableName select ...`.
## How was this patch tested?
manual tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/wangyum/spark SPARK-20187
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17505.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 #17505
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commit c608c4fa0914969966115bf728c21b4631003359
Author: Yuming Wang <wgy...@gmail.com>
Date: 2017-04-01T10:28:08Z
Replace loadTable with moveFile to speed up load table for many output
files.
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