Description
We're getting an NPE during replication, which causes replication for that RegionServer to stop until we restart it.
2013-03-10 12:49:12,679 ERROR org.apache.hadoop.hbase.replication.regionserver.ReplicationSource: Unexpected exception in ReplicationSource, currentPath=hdfs://hmaster1:9000/hbase/.logs/hslave1177,60020,1362549511446/hslave1177%2C60020%2C1362549511446.1362944946489 java.lang.NullPointerException at org.apache.hadoop.hdfs.DFSClient$DFSInputStream.updateBlockInfo(DFSClient.java:1882) at org.apache.hadoop.hdfs.DFSClient$DFSInputStream.openInfo(DFSClient.java:1855) at org.apache.hadoop.hdfs.DFSClient$DFSInputStream.<init>(DFSClient.java:1831) at org.apache.hadoop.hdfs.DFSClient.open(DFSClient.java:578) at org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:154) at org.apache.hadoop.fs.FilterFileSystem.open(FilterFileSystem.java:108) at org.apache.hadoop.io.SequenceFile$Reader.openFile(SequenceFile.java:1495) at org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogReader$WALReader.openFile(SequenceFileLogReader.java:62) at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1482) at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1475) at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1470) at org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogReader$WALReader.<init>(SequenceFileLogReader.java:55) at org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogReader.reset(SequenceFileLogReader.java:308) at org.apache.hadoop.hbase.replication.regionserver.ReplicationHLogReaderManager.openReader(ReplicationHLogReaderManager.java:69) at org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.openReader(ReplicationSource.java:505) at org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.run(ReplicationSource.java:313)
Some extra digging into the DataNode and NameNode logs makes this seem related to HBASE-7530 and HDFS-4380
Here's the relevant snipped portions of the RS, DN, and NN logs:
RS 2013-03-10 12:49:12,618 INFO org.apache.hadoop.hbase.replication.regionserver.ReplicationSourceManager: Going to report log #hslave1177%2C60020%2C1362549511446.1362944946489 for position 59670826 in hdfs://hmaster1:9000/hbase/.logs/hslave1177,60020,1362549511446/hslave1177%2C60020%2C1362549511446.1362944946489 RS 2013-03-10 12:49:12,621 DEBUG org.apache.hadoop.hbase.regionserver.LogRoller: HLog roll requested RS 2013-03-10 12:49:12,623 DEBUG org.apache.hadoop.hbase.replication.regionserver.ReplicationSource: Replicated in total: 31500300 RS 2013-03-10 12:49:12,623 DEBUG org.apache.hadoop.hbase.replication.regionserver.ReplicationSource: Opening log for replication hslave1177%2C60020%2C1362549511446.1362944946489 at 59670826 NN 2013-03-10 12:49:12,627 INFO org.apache.hadoop.hdfs.StateChange: BLOCK* NameSystem.allocateBlock: /hbase/.logs/hslave1177,60020,1362549511446/hslave1177%2C60020%2C1362549511446.1362944946489. blk_6905758215335505153_656717631 RS 2013-03-10 12:49:12,679 ERROR org.apache.hadoop.hbase.replication.regionserver.ReplicationSource: Unexpected exception in ReplicationSource, currentPath=hdfs://hmaster1:9000/hbase/.logs/hslave1177,60020,1362549511446/hslave1177%2C60020%2C1362549511446.1362944946489 DN 2013-03-10 12:49:12,680 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Receiving block blk_6905758215335505153_656717631 src: /192.168.44.1:43503 dest: /192.168.44.1:50010 NN 2013-03-10 12:49:12,804 INFO org.apache.hadoop.hdfs.StateChange: BLOCK* NameSystem.fsync: file /hbase/.logs/hslave1177,60020,1362549511446/hslave1177%2C60020%2C1362549511446.1362944946489 for DFSClient_hb_rs_hslave1177,60020,1362549511446
Attachments
Attachments
Issue Links
- relates to
-
HDFS-4380 Opening a file for read before writer writes a block causes NPE
- Open
-
HBASE-7530 [replication] Work around HDFS-4380 else we get NPEs
- Closed