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chris erway commented on CASSANDRA-2863: ---------------------------------------- So I restarted the node making the NPE above and ran the decommission again (on the other node) and it successfully finished decommissioning. A few hours later I tried to decommission another node and received this error, on a separate node from the two mentioned before, which is a new node running 0.8.6 for just about a day now. INFO [COMMIT-LOG-WRITER] 2011-09-21 05:12:46,361 CommitLogSegment.java (line 58) Creating new commitlog segment /raid0/cassandra/commitlog/CommitLog-1316581966361.log ERROR [Thread-224] 2011-09-21 05:12:52,738 AbstractCassandraDaemon.java (line 139) Fatal exception in thread Thread[Thread-224,5,main] java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.NullPointerException at org.apache.cassandra.streaming.StreamInSession.closeIfFinished(StreamInSession.java:154) at org.apache.cassandra.streaming.IncomingStreamReader.read(IncomingStreamReader.java:63) at org.apache.cassandra.net.IncomingTcpConnection.stream(IncomingTcpConnection.java:189) at org.apache.cassandra.net.IncomingTcpConnection.run(IncomingTcpConnection.java:117) Caused by: java.util.concurrent.ExecutionException: java.lang.NullPointerException at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222) at java.util.concurrent.FutureTask.get(FutureTask.java:83) at org.apache.cassandra.streaming.StreamInSession.closeIfFinished(StreamInSession.java:138) ... 3 more Caused by: java.lang.NullPointerException at org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.close(SSTableWriter.java:382) at org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.index(SSTableWriter.java:370) at org.apache.cassandra.io.sstable.SSTableWriter$Builder.build(SSTableWriter.java:315) at org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1108) at org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1099) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) > NPE when writing SSTable generated via repair > --------------------------------------------- > > Key: CASSANDRA-2863 > URL: https://issues.apache.org/jira/browse/CASSANDRA-2863 > Project: Cassandra > Issue Type: Bug > Components: Core > Affects Versions: 0.8.1 > Reporter: Héctor Izquierdo > > A NPE is generated during repair when closing an sstable generated via > SSTable build. It doesn't happen always. The node had been scrubbed and > compacted before calling repair. > INFO [CompactionExecutor:2] 2011-07-06 11:11:32,640 SSTableReader.java (line > 158) Opening /d2/cassandra/data/sbs/walf-g-730 > ERROR [CompactionExecutor:2] 2011-07-06 11:11:34,327 > AbstractCassandraDaemon.java (line 113) Fatal exception in thread > Thread[CompactionExecutor:2,1,main] > java.lang.NullPointerException > at > org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.close(SSTableWriter.java:382) > at > org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.index(SSTableWriter.java:370) > at > org.apache.cassandra.io.sstable.SSTableWriter$Builder.build(SSTableWriter.java:315) > at > org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1103) > at > org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1094) > at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) > at java.util.concurrent.FutureTask.run(FutureTask.java:138) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) > at java.lang.Thread.run(Thread.java:662) -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira