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Posted to dev@hbase.apache.org by Stack <st...@duboce.net> on 2010/09/26 06:24:59 UTC

On TRUNK, "HDFS pipeline error detected. Found 2 replicas but expecting 3 replicas. Requesting close of hlog"

I see this in RS logs on high repeat rate in TRUNK as of recent update:

....
2010-09-26 04:18:50,271 WARN
org.apache.hadoop.hbase.regionserver.wal.HLog: HDFS pipeline error
detected. Found 2 replicas but expecting 3 replicas.  Requesting close
of hlog.
2010-09-26 04:18:50,271 WARN
org.apache.hadoop.hbase.regionserver.wal.HLog: HDFS pipeline error
detected. Found 2 replicas but expecting 3 replicas.  Requesting close
of hlog.
2010-09-26 04:18:50,303 INFO
org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter: Using
syncFs -- HDFS-200
2010-09-26 04:18:50,339 WARN
org.apache.hadoop.hbase.regionserver.wal.HLog: HDFS pipeline error
detected. Found 2 replicas but expecting 3 replicas.  Requesting close
of hlog.
2010-09-26 04:18:50,728 INFO
org.apache.hadoop.hbase.regionserver.wal.HLog: Roll
/hbase/.logs/su187,60020,1285474482586/10.20.20.187%3A60020.1285474728759,
entries=4, filesize=6464. New hlog
/hbase/.logs/su187,60020,1285474482586/10.20.20.187%3A60020.1285474730271
...

It slows everything down.  Anyone have an idea why this might have
just started happening?

Thanks,
St.Ack