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Posted to dev@hive.apache.org by "Sahil Takiar (JIRA)" <ji...@apache.org> on 2017/12/04 22:10:00 UTC

[jira] [Created] (HIVE-18214) Flaky test: TestSparkClient

Sahil Takiar created HIVE-18214:
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             Summary: Flaky test: TestSparkClient
                 Key: HIVE-18214
                 URL: https://issues.apache.org/jira/browse/HIVE-18214
             Project: Hive
          Issue Type: Sub-task
          Components: Spark
            Reporter: Sahil Takiar
            Assignee: Sahil Takiar


Looks like there is a race condition in {{TestSparkClient#runTest}}. The test creates a {{RemoteDriver}} in memory, which creates a {{JavaSparkContext}}. A new {{JavaSparkContext}} is created for each test that is run. There is a race condition where the {{RemoteDriver}} isn't given enough time to shutdown, so when the next test starts running it creates another {{JavaSparkContext}} which causes an exception like {{org.apache.spark.SparkException: Only one SparkContext may be running in this JVM (see SPARK-2243)}}.



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