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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