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Posted to issues@spark.apache.org by "Tathagata Das (JIRA)" <ji...@apache.org> on 2018/04/23 21:06:00 UTC

[jira] [Created] (SPARK-24056) Make consumer creation lazy in Kafka source for Structured streaming

Tathagata Das created SPARK-24056:
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             Summary: Make consumer creation lazy in Kafka source for Structured streaming
                 Key: SPARK-24056
                 URL: https://issues.apache.org/jira/browse/SPARK-24056
             Project: Spark
          Issue Type: Bug
          Components: Structured Streaming
    Affects Versions: 2.4.0
            Reporter: Tathagata Das
            Assignee: Tathagata Das


Currently, the driver side of the Kafka source (i.e. KafkaMicroBatchReader) eagerly creates a consumer as soon as the Kafk aMicroBatchReader is created. However, we create dummy KafkaMicroBatchReader to get the schema and immediately stop it. Its better to make the consumer creation lazy, it will be created on the first attempt to fetch offsets using the KafkaOffsetReader.



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