Wenchen Fan created SPARK-59757:
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Summary: Fix NPE in BytesToBytesMap after failed reset during spill
Key: SPARK-59757
URL: https://issues.apache.org/jira/browse/SPARK-59757
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 5.0.0
Reporter: Wenchen Fan
BytesToBytesMap.reset() can leave its pointer array null if replacement
allocation fails. A later lookup then throws NullPointerException. Recover the
empty map lazily or report SparkOutOfMemoryError, with on-heap and off-heap
regression coverage.
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