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  1. Spark
  2. SPARK-27720

ConcurrentModificationException on operating with DirectKafkaInputDStream

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Details

    • Bug
    • Status: Resolved
    • Minor
    • Resolution: Not A Problem
    • 2.4.1, 2.4.3
    • None
    • DStreams
    • None

    Description

      If a DirectKafkaInputDStream is started in one thread and is being stopped in another thread (e.g. by shutdown hook) a java.util.ConcurrentModificationException (KafkaConsumer is not safe for multi-threaded access) is thrown.

      This happens even if "spark.streaming.kafka.consumer.cache.enabled" is set to "false".

      MWE: https://gist.github.com/ov7a/fc783315ea252a03d51804ce326a13b1

       

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. SPARK-19185 ConcurrentModificationExceptions with CachedKafkaConsumers when Windowing

          • Major - Major loss of function.
          • Closed

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              Unassigned Unassigned
              ov7a ov7a
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              Dates

                Created:
                Updated:
                Resolved: