RTFMing http://hadoop.apache.org/hbase/docs/current/api/org/apache/hadoop/hbase/mapreduce/package-summary.html right now...Hadoop classpath not being set properly could be the issue...
On Fri, Apr 9, 2010 at 5:26 PM, George Stathis <gstat...@gmail.com> wrote: > 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 > > > >
