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From Pankaj kr <pankaj...@huawei.com>
Subject Region server getting aborted in every one or two days
Date Wed, 23 Mar 2016 06:40:50 GMT
Hi,

In our production environment, RS is getting aborted in every one or two days with following
exception.

2016-03-16 13:57:07,975 | FATAL | MemStoreFlusher.0 | ABORTING region server xyz-vm8,24502,1458034278600:
Replay of WAL required. Forcing server shutdown | org.apache.hadoop.hbase.regionserver.HRegionServer.abort(HRegionServer.java:2055)
org.apache.hadoop.hbase.DroppedSnapshotException: region: TB_WEBLOGIN_201603,060,1457916997964.06e204d3bc262b72820aa195fec23513.
                at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushCacheAndCommit(HRegion.java:2423)
                at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2128)
                at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2090)
                at org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:1983)
                at org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:1909)
                at org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:509)
                at org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:470)
                at org.apache.hadoop.hbase.regionserver.MemStoreFlusher.access$800(MemStoreFlusher.java:74)
                at org.apache.hadoop.hbase.regionserver.MemStoreFlusher$FlushHandler.run(MemStoreFlusher.java:259)
                at java.lang.Thread.run(Thread.java:745)
Caused by: java.nio.channels.ClosedChannelException
              at org.apache.hadoop.hdfs.DataStreamer$LastExceptionInStreamer.throwException4Close(DataStreamer.java:208)
                at org.apache.hadoop.hdfs.DFSOutputStream.checkClosed(DFSOutputStream.java:142)
                at org.apache.hadoop.hdfs.DFSOutputStream.flushOrSync(DFSOutputStream.java:635)
                at org.apache.hadoop.hdfs.DFSOutputStream.hflush(DFSOutputStream.java:490)
                at org.apache.hadoop.fs.FSDataOutputStream.hflush(FSDataOutputStream.java:130)
                at org.apache.hadoop.hbase.regionserver.wal.ProtobufLogWriter.sync(ProtobufLogWriter.java:190)
                at org.apache.hadoop.hbase.regionserver.wal.FSHLog$SyncRunner.run(FSHLog.java:1342)
                ... 1 more

I don't see any error info at HDFS side at that point of time.
Have anyone faced this issue?

HBase version is 0.98.6.

Regards,
Pankaj

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