GitHub user hellodengfei opened a pull request:
https://github.com/apache/spark/pull/22420
SPARK-25429
Use Set improve SparkListenerBus efficient
## What changes were proposed in this pull request?
Use Set instead of Array to provide lookup performance: Set#contains
## How was this patch tested?
The original test case can guarantee
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hellodengfei/spark branch-2.3
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/22420.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 #22420
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commit e8a5bae5283453b1ee7ff595d140112141dd1016
Author: daniedeng(éé£) <daniedeng@...>
Date: 2018-09-14T08:58:52Z
SPARK-25429
Use Set improve SparkListenerBus efficient
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