Thanks for your. We have 4 Fedora boxes running this Hadoop 0.19.0 and HBase, they are all EC2 boxes.
We tried to do this on them: append "- - nofile 32768"to /etc/security/limits.conf append "fs.file-max=200000" to /etc/sysctl.conf run "sysctl -p" to apply changes. We restarted HBase and Hadoop after applying this. But it again ran to the same error after 4 hours or so. Regards, Yan 2009/2/23 Amandeep Khurana <[email protected]> > I've been dealing with this myself over the last few days. Its got to do > with the number of open files that hdfs can take. What is your cluster > config? > > > > > Amandeep Khurana > Computer Science Graduate Student > University of California, Santa Cruz > > > On Sun, Feb 22, 2009 at 10:31 PM, Liu Yan <[email protected]> wrote: > > > hi, > > When we run the java client to add data to hbase, > > from the beginnng we can add the data to hbase. But running for some > times, > > when the client tries to add a record to hbase, it shows the exception: > > > > org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to > contact > > re > > gion server Some server for region , row '176207513941646000', but failed > > after > > 11 attempts. > > Exceptions: > > java.io.IOException: HRegionInfo was null or empty in .META. > > java.io.IOException: HRegionInfo was null or empty in .META. > > java.io.IOException: HRegionInfo was null or empty in .META. > > java.io.IOException: HRegionInfo was null or empty in .META. > > java.io.IOException: HRegionInfo was null or empty in .META. > > java.io.IOException: HRegionInfo was null or empty in .META. > > java.io.IOException: HRegionInfo was null or empty in .META. > > java.io.IOException: HRegionInfo was null or empty in .META. > > java.io.IOException: HRegionInfo was null or empty in .META. > > java.io.IOException: HRegionInfo was null or empty in .META. > > > > at > > org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getReg > > ionLocationForRowWithRetries(HConnectionManager.java:900) > > at > > org.apache.hadoop.hbase.client.HConnectionManager$TableServers.proces > > sBatchOfRows(HConnectionManager.java:915) > > at > > org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:1372) > > at org.apache.hadoop.hbase.client.HTable.commit(HTable.java:1316) > > at org.apache.hadoop.hbase.client.HTable.commit(HTable.java:1296) > > > > Could anybody help me out of this? > > > > Regards, > > Yan > > >
