Here's what it throws on the console:

09/02/20 21:45:29 INFO mapred.JobClient: Task Id :
attempt_200902201300_0019_m_000006_0, Status : FAILED
java.io.IOException: table is null
        at IN_TABLE_IMPORT$MapClass.map(IN_TABLE_IMPORT.java:33)
        at IN_TABLE_IMPORT$MapClass.map(IN_TABLE_IMPORT.java:1)
        at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:332)
        at org.apache.hadoop.mapred.Child.main(Child.java:155)

attempt_200902201300_0019_m_000006_0:
org.apache.hadoop.hbase.client.NoServerForRegionException: Timed out trying
to locate root region
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRootRegion(HConnectionManager.java:768)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:448)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.relocateRegion(HConnectionManager.java:430)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:557)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:457)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.relocateRegion(HConnectionManager.java:430)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:557)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:461)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:423)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:114)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:97)
attempt_200902201300_0019_m_000006_0:   at
IN_TABLE_IMPORT$MapClass.configure(IN_TABLE_IMPORT.java:120)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:58)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:83)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:34)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:58)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:83)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.mapred.MapTask.run(MapTask.java:328)
attempt_200902201300_0019_m_000006_0:   at
org.apache.hadoop.mapred.Child.main(Child.java:155)





Amandeep Khurana
Computer Science Graduate Student
University of California, Santa Cruz


On Fri, Feb 20, 2009 at 9:43 PM, Amandeep Khurana <amansk@gmail.com> wrote:

> I am trying to import data from a flat file into Hbase using a Map Reduce
> job. There are close to 2 million rows. Mid way into the job, it starts
> giving me connection problems and eventually kills the job. When the error
> comes, the hbase shell also stops working.
>
> This is what I get:
>
> 2009-02-20 21:37:14,407 INFO org.apache.hadoop.ipc.HBaseClass: Retrying connect to server: /171.69.102.52:60020. Already tried 0 time(s).
>
> What could be going wrong?
>
> Amandeep
>
>
> Amandeep Khurana
> Computer Science Graduate Student
> University of California, Santa Cruz
>