GitHub user zsxwing opened a pull request:
https://github.com/apache/spark/pull/23023
[SPARK-26042][SS][TESTS]Fix a potential hang in
KafkaContinuousSourceTopicDeletionSuite
## What changes were proposed in this pull request?
As initializing lazy vals shares the same lock, a thread is trying to
initialize `executedPlan` when `isRDD` is running, this thread will hang
forever.
This PR just materializes `executedPlan` so that accessing it when `toRdd`
is running doesn't need to wait for a lock
## How was this patch tested?
Jenkins
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zsxwing/spark SPARK-26042
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/23023.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 #23023
commit 33b51136e6292db8236c6d39d662887d18a9534d
Author: Shixiong Zhu
Date: 2018-11-13T17:42:08Z
Fix a potential hang in KafkaContinuousSourceTopicDeletionSuite
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