Hi,

I want to copy a table from  Distributed Hbase cluster to Pseudo
Distributed Hbase Cluster. Here the Pseudo Distributed Hbase cluster uses
Linux Filesystem as storage.
How can i import data from Distributed Hbase cluster to Pseudo Distributed
Hbase Cluster.

Thanks
Arun
Cloudwick Technologies

Assuming that your data fits into the pseudo dist cluster and both clusters can talk to each other, the CopyTable job that comes bundled with HBase should work.

-ak
On Tuesday, May 29, 2012 at 11:42 AM, arun sirimalla wrote:

> Hi,
>
> I want to copy a table from Distributed Hbase cluster to Pseudo
> Distributed Hbase Cluster. Here the Pseudo Distributed Hbase cluster uses
> Linux Filesystem as storage.
> How can i import data from Distributed Hbase cluster to Pseudo Distributed
> Hbase Cluster.
>
> Thanks
> Arun
> Cloudwick Technologies
>
>

Hi Amandeep,

Thanks for your reply. I tried the copytable tool to copy the table from
Distributed Hbase cluster to Pseudo Distributed Hbase Cluster using the
below command

hadoop jar hbase-0.90.3-cdh3u1.jar copytable
--peer.adr=sand001.rssand001:2181:/storage/hbase test

It initializes the job and fails with following error

12/05/29 19:05:15 INFO mapred.JobClient: Running job: job_201204122048_0004
12/05/29 19:05:16 INFO mapred.JobClient:  map 0% reduce 0%
12/05/29 19:05:26 INFO mapred.JobClient: Task Id :
attempt_201204122048_0004_m_000000_0, Status : FAILED
java.lang.NullPointerException
    at
org.apache.hadoop.hbase.mapreduce.TableOutputFormat$TableRecordWriter.write(TableOutputFormat.java:127)
    at
org.apache.hadoop.hbase.mapreduce.TableOutputFormat$TableRecordWriter.write(TableOutputFormat.java:82)
    at
org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector.write(MapTask.java:531)
    at
org.apache.hadoop.mapreduce.TaskInputOutputContext.write(TaskInputOutputContext.java:80)
    at org.apache.hadoop.hbase.mapreduce.Import$Importer.map(Import.java:60)
    at org.apache.hadoop.hbase.mapreduce.Import$Importer.map(Import.java:45)
    at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
    at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:647)
    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:323)
    at org.apache.hadoop.mapred.Child$4.run(Child.java:270)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:396)
    at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1127)
    at org.apache.hadoop.mapred.Child.main(Child.java:264)
On Tue, May 29, 2012 at 11:45 AM, Amandeep Khurana <[EMAIL PROTECTED]> wrote:

> Assuming that your data fits into the pseudo dist cluster and both
> clusters can talk to each other, the CopyTable job that comes bundled with
> HBase should work.
>
> -ak
>
>
> On Tuesday, May 29, 2012 at 11:42 AM, arun sirimalla wrote:
>
> > Hi,
> >
> > I want to copy a table from Distributed Hbase cluster to Pseudo
> > Distributed Hbase Cluster. Here the Pseudo Distributed Hbase cluster uses
> > Linux Filesystem as storage.
> > How can i import data from Distributed Hbase cluster to Pseudo
> Distributed
> > Hbase Cluster.
> >
> > Thanks
> > Arun
> > Cloudwick Technologies
> >
> >
>
>
>

As this is a quite old version of HBase and a CDH version, you should
ask on the CDH lists.

    - Andy

On Tue, May 29, 2012 at 12:13 PM, arun sirimalla <[EMAIL PROTECTED]> wrote:
> Hi Amandeep,
>
> Thanks for your reply. I tried the copytable tool to copy the table from
> Distributed Hbase cluster to Pseudo Distributed Hbase Cluster using the
> below command
>
> hadoop jar hbase-0.90.3-cdh3u1.jar copytable
> --peer.adr=sand001.rssand001:2181:/storage/hbase test
>
> It initializes the job and fails with following error
>
> 12/05/29 19:05:15 INFO mapred.JobClient: Running job: job_201204122048_0004
> 12/05/29 19:05:16 INFO mapred.JobClient:  map 0% reduce 0%
> 12/05/29 19:05:26 INFO mapred.JobClient: Task Id :
> attempt_201204122048_0004_m_000000_0, Status : FAILED
> java.lang.NullPointerException
>    at
> org.apache.hadoop.hbase.mapreduce.TableOutputFormat$TableRecordWriter.write(TableOutputFormat.java:127)
>    at
> org.apache.hadoop.hbase.mapreduce.TableOutputFormat$TableRecordWriter.write(TableOutputFormat.java:82)
>    at
> org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector.write(MapTask.java:531)
>    at
> org.apache.hadoop.mapreduce.TaskInputOutputContext.write(TaskInputOutputContext.java:80)
>    at org.apache.hadoop.hbase.mapreduce.Import$Importer.map(Import.java:60)
>    at org.apache.hadoop.hbase.mapreduce.Import$Importer.map(Import.java:45)
>    at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
>    at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:647)
>    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:323)
>    at org.apache.hadoop.mapred.Child$4.run(Child.java:270)
>    at java.security.AccessController.doPrivileged(Native Method)
>    at javax.security.auth.Subject.doAs(Subject.java:396)
>    at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1127)
>    at org.apache.hadoop.mapred.Child.main(Child.java:264)
>
>
> On Tue, May 29, 2012 at 11:45 AM, Amandeep Khurana <[EMAIL PROTECTED]> wrote:
>
>> Assuming that your data fits into the pseudo dist cluster and both
>> clusters can talk to each other, the CopyTable job that comes bundled with
>> HBase should work.
>>
>> -ak
>>
>>
>> On Tuesday, May 29, 2012 at 11:42 AM, arun sirimalla wrote:
>>
>> > Hi,
>> >
>> > I want to copy a table from Distributed Hbase cluster to Pseudo
>> > Distributed Hbase Cluster. Here the Pseudo Distributed Hbase cluster uses
>> > Linux Filesystem as storage.
>> > How can i import data from Distributed Hbase cluster to Pseudo
>> Distributed
>> > Hbase Cluster.
>> >
>> > Thanks
>> > Arun
>> > Cloudwick Technologies
>> >
>> >
>>
>>
>>

--
Best regards,

   - Andy

Problems worthy of attack prove their worth by hitting back. - Piet
Hein (via Tom White)