[ https://issues.apache.org/jira/browse/SPARK-21907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-21907: ------------------------------------ Assignee: (was: Apache Spark) > NullPointerException in UnsafeExternalSorter.spill() > ---------------------------------------------------- > > Key: SPARK-21907 > URL: https://issues.apache.org/jira/browse/SPARK-21907 > Project: Spark > Issue Type: Bug > Components: Spark Core > Affects Versions: 2.2.0 > Reporter: Juliusz Sompolski > > I see NPE during sorting with the following stacktrace: > {code} > java.lang.NullPointerException > at > org.apache.spark.memory.TaskMemoryManager.getPage(TaskMemoryManager.java:383) > at > org.apache.spark.util.collection.unsafe.sort.UnsafeInMemorySorter$SortComparator.compare(UnsafeInMemorySorter.java:63) > at > org.apache.spark.util.collection.unsafe.sort.UnsafeInMemorySorter$SortComparator.compare(UnsafeInMemorySorter.java:43) > at > org.apache.spark.util.collection.TimSort.countRunAndMakeAscending(TimSort.java:270) > at org.apache.spark.util.collection.TimSort.sort(TimSort.java:142) > at org.apache.spark.util.collection.Sorter.sort(Sorter.scala:37) > at > org.apache.spark.util.collection.unsafe.sort.UnsafeInMemorySorter.getSortedIterator(UnsafeInMemorySorter.java:345) > at > org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter.spill(UnsafeExternalSorter.java:206) > at > org.apache.spark.memory.TaskMemoryManager.acquireExecutionMemory(TaskMemoryManager.java:203) > at > org.apache.spark.memory.TaskMemoryManager.allocatePage(TaskMemoryManager.java:281) > at > org.apache.spark.memory.MemoryConsumer.allocateArray(MemoryConsumer.java:90) > at > org.apache.spark.util.collection.unsafe.sort.UnsafeInMemorySorter.reset(UnsafeInMemorySorter.java:173) > at > org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter.spill(UnsafeExternalSorter.java:221) > at > org.apache.spark.memory.TaskMemoryManager.acquireExecutionMemory(TaskMemoryManager.java:203) > at > org.apache.spark.memory.TaskMemoryManager.allocatePage(TaskMemoryManager.java:281) > at > org.apache.spark.memory.MemoryConsumer.allocateArray(MemoryConsumer.java:90) > at > org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter.growPointerArrayIfNecessary(UnsafeExternalSorter.java:349) > at > org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter.insertRecord(UnsafeExternalSorter.java:400) > at > org.apache.spark.sql.execution.UnsafeExternalRowSorter.insertRow(UnsafeExternalRowSorter.java:109) > at > org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIterator.sort_addToSorter$(Unknown > Source) > at > org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIterator.processNext(Unknown > Source) > at > org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43) > at > org.apache.spark.sql.execution.WholeStageCodegenExec$$anonfun$8$$anon$1.hasNext(WholeStageCodegenExec.scala:395) > at > org.apache.spark.sql.execution.RowIteratorFromScala.advanceNext(RowIterator.scala:83) > at > org.apache.spark.sql.execution.joins.SortMergeJoinScanner.advancedStreamed(SortMergeJoinExec.scala:778) > at > org.apache.spark.sql.execution.joins.SortMergeJoinScanner.findNextInnerJoinRows(SortMergeJoinExec.scala:685) > at > org.apache.spark.sql.execution.joins.SortMergeJoinExec$$anonfun$doExecute$1$$anon$2.advanceNext(SortMergeJoinExec.scala:259) > at > org.apache.spark.sql.execution.RowIteratorToScala.hasNext(RowIterator.scala:68) > at > org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIterator.agg_doAggregateWithKeys$(Unknown > Source) > at > org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIterator.processNext(Unknown > Source) > at > org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43) > at > org.apache.spark.sql.execution.WholeStageCodegenExec$$anonfun$8$$anon$1.hasNext(WholeStageCodegenExec.scala:395) > at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408) > at > org.apache.spark.shuffle.sort.BypassMergeSortShuffleWriter.write(BypassMergeSortShuffleWriter.java:125) > at > org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:96) > at > org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:53) > at org.apache.spark.scheduler.Task.run(Task.scala:108) > at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:346) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:748) > {code} -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org