[ https://issues.apache.org/jira/browse/SPARK-31592?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yunbo Fan updated SPARK-31592: ------------------------------ Description: 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} was: 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} > 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 > Priority: Major > > 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} > > -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org