GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/17624
[SPARK-15354][flaky-test] Fix flaky test
## What changes were proposed in this pull request?
`TopologyAwareBlockReplicationPolicyBehavior.Peers in 2 racks` is failing
occasionally:
https://spark-tests.appspot.com/test-details?suite_name=org.apache.spark.storage.TopologyAwareBlockReplicationPolicyBehavior&test_name=Peers+in+2+racks.
This is because, when we generate 10 block manager id to test, they may all
belong to the same rack, as the rack is randomly picked. This PR fixes this
problem by forcing each rack to be picked at least once.
## How was this patch tested?
N/A
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark test
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17624.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 #17624
----
commit af487cd1c2a22b567bae46fa7454a86155230d27
Author: Wenchen Fan <[email protected]>
Date: 2017-04-12T16:48:46Z
fix flacky test
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