GitHub user xubo245 opened a pull request:
https://github.com/apache/spark/pull/20044
[SPARK-22857] Optimize code by inspecting code
Optimize code by inspecting code, including:
remove some unused import
change invoking array size method to length method
use head method
## What changes were proposed in this pull request?
(Please fill in changes proposed in this fix)
## How was this patch tested?
(Please explain how this patch was tested. E.g. unit tests, integration
tests, manual tests)
(If this patch involves UI changes, please attach a screenshot; otherwise,
remove this)
Please review http://spark.apache.org/contributing.html before opening a
pull request.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/xubo245/spark spark2.2
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20044.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 #20044
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commit aab41182a333b6f6b3e58624f896dfa668d75842
Author: xubo245 <601450868@...>
Date: 2017-11-27T12:26:58Z
[SPARK-22857] Optimize code by inspecting code
Optimize code by inspecting code, including:
remove some unused import
change invoking array size method to length method
use head method
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