GitHub user zsxwing opened a pull request:
https://github.com/apache/spark/pull/18944
[SPARK-21732][SQL]Lazily init hive metastore client
## What changes were proposed in this pull request?
This PR changes the codes to lazily init hive metastore client so that we
can create SparkSession without talking to the hive metastore sever.
It's pretty helpful when you set a hive metastore server but it's down. You
can still start the Spark shell to debug.
## How was this patch tested?
The new unit test.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zsxwing/spark hive-lazy-init
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18944.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 #18944
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commit 9eb91493aef7d4ce0e0f4cccd5597a4815d6fd58
Author: Shixiong Zhu <shixi...@databricks.com>
Date: 2017-08-15T00:17:39Z
lazily init hive metastore client
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