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Posted to user@hbase.apache.org by arun sirimalla <ar...@gmail.com> on 2013/07/23 21:26:31 UTC
HBase Master not running Exception
I am running mapreduce job to insert the data into HBase, Map phase is
running fine, but when the reducer starts it fails on all nodes except one
node and i notice below error on failed tasks. Out of 12 tasktrackers, one
tasktracker can connect to HBase and insert the data. Class path is set on
all nodes, but unable to figure out whats the root cause. No issues with
HBase, i can scan the tables.
Caused by: java.lang.NoClassDefFoundError:
org/apache/hadoop/hbase/MasterNotRunningException
at com.netapp.asupdata.configloader.hbase.HbaseConnectionManager.initializeAllConnections(HbaseConnectionManager.java:161)
at com.netapp.asupdata.configloader.mapreduce.AbstractLoaderReducer.configure(AbstractLoaderReducer.java:112)
at com.netapp.asupdata.configloader.mapreduce.BackfillLoaderReducer.configure(BackfillLoaderReducer.java:20)
... 14 more
Caused by: java.lang.ClassNotFoundException:
org.apache.hadoop.hbase.MasterNotRunningException
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
Thanks
Arun
Re: HBase Master not running Exception
Posted by Ted Yu <yu...@gmail.com>.
More information from the developer would help.
Also take a look at TableMapReduceUtil#initTableReducerJob() and how it is
used in 0.94 code base.
Cheers
On Tue, Jul 23, 2013 at 12:50 PM, arun sirimalla <ar...@gmail.com>wrote:
> I am using HBase 94.6, i am not pretty sure about how we intialize
> reducers. I can ask my developer regarding that.
> Is there any other issue that can cause reduce task not connecting to
> HBase? I Set only 1 reducer to this job, it succeeds only if that reducer
> task is assigned to one of the tasktracker as mentioned in my previous
> email.
>
>
> On Tue, Jul 23, 2013 at 12:32 PM, Ted Yu <yu...@gmail.com> wrote:
>
> > Which HBase release are you using ?
> >
> > Mind showing us how you initialize the reduce tasks ?
> >
> > Cheers
> >
> > On Tue, Jul 23, 2013 at 12:26 PM, arun sirimalla <arunsirik@gmail.com
> > >wrote:
> >
> > > I am running mapreduce job to insert the data into HBase, Map phase is
> > > running fine, but when the reducer starts it fails on all nodes except
> > one
> > > node and i notice below error on failed tasks. Out of 12 tasktrackers,
> > one
> > > tasktracker can connect to HBase and insert the data. Class path is set
> > on
> > > all nodes, but unable to figure out whats the root cause. No issues
> with
> > > HBase, i can scan the tables.
> > >
> > > Caused by: java.lang.NoClassDefFoundError:
> > > org/apache/hadoop/hbase/MasterNotRunningException
> > > at
> > >
> >
> com.netapp.asupdata.configloader.hbase.HbaseConnectionManager.initializeAllConnections(HbaseConnectionManager.java:161)
> > > at
> > >
> >
> com.netapp.asupdata.configloader.mapreduce.AbstractLoaderReducer.configure(AbstractLoaderReducer.java:112)
> > > at
> > >
> >
> com.netapp.asupdata.configloader.mapreduce.BackfillLoaderReducer.configure(BackfillLoaderReducer.java:20)
> > > ... 14 more
> > > Caused by: java.lang.ClassNotFoundException:
> > > org.apache.hadoop.hbase.MasterNotRunningException
> > > at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> > >
> > > Thanks
> > > Arun
> > >
> >
>
Re: HBase Master not running Exception
Posted by arun sirimalla <ar...@gmail.com>.
I am using HBase 94.6, i am not pretty sure about how we intialize
reducers. I can ask my developer regarding that.
Is there any other issue that can cause reduce task not connecting to
HBase? I Set only 1 reducer to this job, it succeeds only if that reducer
task is assigned to one of the tasktracker as mentioned in my previous
email.
On Tue, Jul 23, 2013 at 12:32 PM, Ted Yu <yu...@gmail.com> wrote:
> Which HBase release are you using ?
>
> Mind showing us how you initialize the reduce tasks ?
>
> Cheers
>
> On Tue, Jul 23, 2013 at 12:26 PM, arun sirimalla <arunsirik@gmail.com
> >wrote:
>
> > I am running mapreduce job to insert the data into HBase, Map phase is
> > running fine, but when the reducer starts it fails on all nodes except
> one
> > node and i notice below error on failed tasks. Out of 12 tasktrackers,
> one
> > tasktracker can connect to HBase and insert the data. Class path is set
> on
> > all nodes, but unable to figure out whats the root cause. No issues with
> > HBase, i can scan the tables.
> >
> > Caused by: java.lang.NoClassDefFoundError:
> > org/apache/hadoop/hbase/MasterNotRunningException
> > at
> >
> com.netapp.asupdata.configloader.hbase.HbaseConnectionManager.initializeAllConnections(HbaseConnectionManager.java:161)
> > at
> >
> com.netapp.asupdata.configloader.mapreduce.AbstractLoaderReducer.configure(AbstractLoaderReducer.java:112)
> > at
> >
> com.netapp.asupdata.configloader.mapreduce.BackfillLoaderReducer.configure(BackfillLoaderReducer.java:20)
> > ... 14 more
> > Caused by: java.lang.ClassNotFoundException:
> > org.apache.hadoop.hbase.MasterNotRunningException
> > at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> >
> > Thanks
> > Arun
> >
>
Re: HBase Master not running Exception
Posted by Ted Yu <yu...@gmail.com>.
Which HBase release are you using ?
Mind showing us how you initialize the reduce tasks ?
Cheers
On Tue, Jul 23, 2013 at 12:26 PM, arun sirimalla <ar...@gmail.com>wrote:
> I am running mapreduce job to insert the data into HBase, Map phase is
> running fine, but when the reducer starts it fails on all nodes except one
> node and i notice below error on failed tasks. Out of 12 tasktrackers, one
> tasktracker can connect to HBase and insert the data. Class path is set on
> all nodes, but unable to figure out whats the root cause. No issues with
> HBase, i can scan the tables.
>
> Caused by: java.lang.NoClassDefFoundError:
> org/apache/hadoop/hbase/MasterNotRunningException
> at
> com.netapp.asupdata.configloader.hbase.HbaseConnectionManager.initializeAllConnections(HbaseConnectionManager.java:161)
> at
> com.netapp.asupdata.configloader.mapreduce.AbstractLoaderReducer.configure(AbstractLoaderReducer.java:112)
> at
> com.netapp.asupdata.configloader.mapreduce.BackfillLoaderReducer.configure(BackfillLoaderReducer.java:20)
> ... 14 more
> Caused by: java.lang.ClassNotFoundException:
> org.apache.hadoop.hbase.MasterNotRunningException
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>
> Thanks
> Arun
>