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https://issues.apache.org/jira/browse/SPARK-26275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-26275.
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Resolution: Fixed
Fix Version/s: 3.0.0
Issue resolved by pull request 23236
[https://github.com/apache/spark/pull/23236]
> Flaky test: pyspark.mllib.tests.test_streaming_algorithms
> StreamingLogisticRegressionWithSGDTests.test_training_and_prediction
> ------------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-26275
> URL: https://issues.apache.org/jira/browse/SPARK-26275
> Project: Spark
> Issue Type: Test
> Components: MLlib, PySpark
> Affects Versions: 3.0.0
> Reporter: Hyukjin Kwon
> Assignee: Hyukjin Kwon
> Priority: Minor
> Fix For: 3.0.0
>
>
> Looks this test is flaky
> https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/99704/console
> https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/99569/console
> https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/99644/console
> https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/99548/console
> https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/99454/console
> https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/99609/console
> {code}
> ======================================================================
> FAIL: test_training_and_prediction
> (pyspark.mllib.tests.test_streaming_algorithms.StreamingLogisticRegressionWithSGDTests)
> Test that the model improves on toy data with no. of batches
> ----------------------------------------------------------------------
> Traceback (most recent call last):
> File
> "/home/jenkins/workspace/SparkPullRequestBuilder/python/pyspark/mllib/tests/test_streaming_algorithms.py",
> line 367, in test_training_and_prediction
> self._eventually(condition)
> File
> "/home/jenkins/workspace/SparkPullRequestBuilder/python/pyspark/mllib/tests/test_streaming_algorithms.py",
> line 78, in _eventually
> % (timeout, lastValue))
> AssertionError: Test failed due to timeout after 30 sec, with last condition
> returning: Latest errors: 0.67, 0.71, 0.78, 0.7, 0.75, 0.74, 0.73, 0.69,
> 0.62, 0.71, 0.69, 0.75, 0.72, 0.77, 0.71, 0.74
> ----------------------------------------------------------------------
> Ran 13 tests in 185.051s
> FAILED (failures=1, skipped=1)
> {code}
> This looks happening after increasing the parallelism in Jenkins to speed up.
> I am able to reproduce this manually when the resource usage is heavy with
> manual decrease of timeout.
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