Anish Shrigondekar created SPARK-38809:
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Summary: Implement option to skip null values in symmetric hash
impl of stream-stream joins
Key: SPARK-38809
URL: https://issues.apache.org/jira/browse/SPARK-38809
Project: Spark
Issue Type: Bug
Components: Structured Streaming
Affects Versions: 3.2.1
Reporter: Anish Shrigondekar
Implement option to skip null values in symmetric hash impl of stream-stream
joins
* In the symmetric has join state manager, we can receive entries with null
values for a key and that caused the `removeByValue` and get iterators to fail
and run into the NullPointerException.
* This is possible if the state recovered is written from a old spark version
or its corrupted on disk. Since we don't have a utility to query this state, we
would like to provide a conf option to skip nulls for the symmetric hash impl
in stream stream joins.
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