Hi folks, I hope this is just a newbie problem.
Context: - Running 0.20.3 tag locally in pseudo cluster mode - $HBASE_HOME is in env and $PATH - Running org.apache.hadoop.hbase.mapreduce.Export in the shell such as: $ hbase org.apache.hadoop.hbase.mapreduce.Export channels /bkps/channels/01 Symptom: - Getting an NPE at org.apache.hadoop.hbase.mapreduce.TableInputFormatBase$TableRecordReader.restart(TableInputFormatBase.java:110): [...] 110 this.scanner = this.htable.getScanner(newScan); [...] Full output is bellow. Not sure why htable is still null at that point. User error? Any help is appreciated. -GS Full output: $ hbase org.apache.hadoop.hbase.mapreduce.Export channels /bkps/channels/01 2010-04-09 17:13:57.407::INFO: Logging to STDERR via org.mortbay.log.StdErrLog 2010-04-09 17:13:57.408::INFO: verisons=1, starttime=0, endtime=9223372036854775807 10/04/09 17:13:58 DEBUG zookeeper.ZooKeeperWrapper: Read ZNode /hbase/root-region-server got 192.168.1.16:52159 10/04/09 17:13:58 DEBUG client.HConnectionManager$TableServers: Found ROOT at 192.168.1.16:52159 10/04/09 17:13:58 DEBUG client.HConnectionManager$TableServers: Cached location for .META.,,1 is 192.168.1.16:52159 10/04/09 17:13:58 DEBUG client.HConnectionManager$TableServers: Cached location for channels,,1270753106916 is 192.168.1.16:52159 10/04/09 17:13:58 DEBUG client.HConnectionManager$TableServers: Cache hit for row <> in tableName channels: location server 192.168.1.16:52159, location region name channels,,1270753106916 10/04/09 17:13:58 DEBUG mapreduce.TableInputFormatBase: getSplits: split -> 0 -> 192.168.1.16:, 10/04/09 17:13:58 INFO mapred.JobClient: Running job: job_201004091642_0009 10/04/09 17:13:59 INFO mapred.JobClient: map 0% reduce 0% 10/04/09 17:14:09 INFO mapred.JobClient: Task Id : attempt_201004091642_0009_m_000000_0, Status : FAILED java.lang.NullPointerException at org.apache.hadoop.hbase.mapreduce.TableInputFormatBase$TableRecordReader.restart(TableInputFormatBase.java:110) at org.apache.hadoop.hbase.mapreduce.TableInputFormatBase$TableRecordReader.init(TableInputFormatBase.java:119) at org.apache.hadoop.hbase.mapreduce.TableInputFormatBase.createRecordReader(TableInputFormatBase.java:262) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:588) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305) at org.apache.hadoop.mapred.Child.main(Child.java:170) 10/04/09 17:14:15 INFO mapred.JobClient: Task Id : attempt_201004091642_0009_m_000000_1, Status : FAILED java.lang.NullPointerException at org.apache.hadoop.hbase.mapreduce.TableInputFormatBase$TableRecordReader.restart(TableInputFormatBase.java:110) at org.apache.hadoop.hbase.mapreduce.TableInputFormatBase$TableRecordReader.init(TableInputFormatBase.java:119) at org.apache.hadoop.hbase.mapreduce.TableInputFormatBase.createRecordReader(TableInputFormatBase.java:262) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:588) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305) at org.apache.hadoop.mapred.Child.main(Child.java:170) 10/04/09 17:14:21 INFO mapred.JobClient: Task Id : attempt_201004091642_0009_m_000000_2, Status : FAILED java.lang.NullPointerException at org.apache.hadoop.hbase.mapreduce.TableInputFormatBase$TableRecordReader.restart(TableInputFormatBase.java:110) at org.apache.hadoop.hbase.mapreduce.TableInputFormatBase$TableRecordReader.init(TableInputFormatBase.java:119) at org.apache.hadoop.hbase.mapreduce.TableInputFormatBase.createRecordReader(TableInputFormatBase.java:262) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:588) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305) at org.apache.hadoop.mapred.Child.main(Child.java:170) 10/04/09 17:14:30 INFO mapred.JobClient: Job complete: job_201004091642_0009 10/04/09 17:14:30 INFO mapred.JobClient: Counters: 3 10/04/09 17:14:30 INFO mapred.JobClient: Job Counters 10/04/09 17:14:30 INFO mapred.JobClient: Launched map tasks=4 10/04/09 17:14:30 INFO mapred.JobClient: Data-local map tasks=4 10/04/09 17:14:30 INFO mapred.JobClient: Failed map tasks=1 10/04/09 17:14:30 DEBUG zookeeper.ZooKeeperWrapper: Closed connection with ZooKeeper