Yunbo Fan created SPARK-31592:
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Summary: bufferPoolsBySize in HeapMemoryAllocator should be thread
safe
Key: SPARK-31592
URL: https://issues.apache.org/jira/browse/SPARK-31592
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 2.4.5
Reporter: Yunbo Fan
Currently, bufferPoolsBySize in HeapMemoryAllocator uses a Map type whose value
type is LinkedList.
LinkedList is not thread safe and may hit the error below
{code:java}
java.util.NoSuchElementExceptionException
at java.util.LinkedList.removeFirst(LinkedList.java:270)
at java.util.LinkedList.remove(LinkedList.java:685)
at
org.apache.spark.unsafe.memory.HeapMemoryAllocator.allocate(HeapMemoryAllocator.java:57){code}
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