Hi all, I trying to import a backup of an hbase-1.0.6 export into a newly setup hbase-2.2.5 cluster.
When I run $NOSQL_HOME/hadoop-2.8.5/bin/yarn --config $NOSQL_HOME/hadoop-2.8.5/etc/hadoop jar $HBASE_HOME/lib/hbase-mapreduce-2.2.5.jar import tt_items /TMPHDFS The map reduce jobs starts on the nodes but after a while there are a dozen Exceptions: Error: java.lang.RuntimeException: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid at org.apache.hadoop.hbase.mapreduce.Import$Importer.setup(Import.java:632) at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:143) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:787) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:175) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1844) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:169) Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid at org.apache.zookeeper.KeeperException.create(KeeperException.java:99) at org.apache.zookeeper.KeeperException.create(KeeperException.java:51) at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1045) at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:206) at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:405) at org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:65) at org.apache.hadoop.hbase.zookeeper.ZKClusterId.getUUIDForCluster(ZKClusterId.java:96) at org.apache.hadoop.hbase.mapreduce.Import$Importer.setup(Import.java:617) ... 8 more In hadoop all-applications Website I than get the status FAILED. I switched off firewalls, tested dns resolving, Configured Zookeeper Port 2181 is reachable from all nodes. An "echo mntr | nc Masternode 2181" shows a correct reply with date from zookeeper service. I also augmented the maxclientconnections of zookeeper in hnase-site.xml to 3000. It seems also that ther was data imported - but I am not sure if these errors are concerning? But with no success. Any ideas how to debug this? Thanks in advance, Martin