Eric Marnadi created SPARK-53398:
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Summary: Ensure that RocksDBMemoryManager metrics reporting
doesn't throw a NullPointerException
Key: SPARK-53398
URL: https://issues.apache.org/jira/browse/SPARK-53398
Project: Spark
Issue Type: Improvement
Components: Structured Streaming
Affects Versions: 4.1.0
Reporter: Eric Marnadi
If the RocksDB instance is unregistered from the memory manager via
maintenance, then metrics are called on the same instance, then we will throw
an NPE, which will fail the query, from the RocksDBMemoryManager metrics
reporting path. We can handle this by appending a UUID to the uniqueId we pass
to RocksDB and using getOrDefault in the Memory Manager.
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