Flaky test: pyspark.mllib.tests.test_streaming_algorithms.StreamingLinearRegressionWithTests.test_parameter_convergence

Error Message

7 != 10

StacktraceTraceback (most recent call last):
  File "/home/jenkins/workspace/SparkPullRequestBuilder@2/python/pyspark/mllib/tests/test_streaming_algorithms.py", line 429, in test_parameter_convergence
    self._eventually(condition, catch_assertions=True)
  File "/home/jenkins/workspace/SparkPullRequestBuilder@2/python/pyspark/mllib/tests/test_streaming_algorithms.py", line 74, in _eventually
    raise lastValue
  File "/home/jenkins/workspace/SparkPullRequestBuilder@2/python/pyspark/mllib/tests/test_streaming_algorithms.py", line 65, in _eventually
    lastValue = condition()
  File "/home/jenkins/workspace/SparkPullRequestBuilder@2/python/pyspark/mllib/tests/test_streaming_algorithms.py", line 425, in condition
    self.assertEqual(len(model_weights), len(batches))
AssertionError: 7 != 10