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Posted to common-user@hadoop.apache.org by ma qiang <ma...@gmail.com> on 2008/01/24 06:19:17 UTC
can't connect to HBase any more
I connect to HBase using HBaseAdmin and HTable class succefully,
suddenly can't manipulate HBase and the error print as belows:
java.net.SocketTimeoutException: timed out waiting for rpc response
at org.apache.hadoop.ipc.Client.call(Client.java:484)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:184)
at $Proxy0.deleteTable(Unknown Source)
at org.apache.hadoop.hbase.HBaseAdmin.deleteTable(HBaseAdmin.java:169)
at hbasetest.DeleteTable.main(DeleteTable.java:29)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.util.RunJar.main(RunJar.java:155)
Can you tell me why and how to solve this problem. Thank you very much.
Best wishes;
Re: can't connect to HBase any more
Posted by ma qiang <ma...@gmail.com>.
I use command in shell lilke select * from tablename ; the exception
print as below :
org.apache.hadoop.hbase.NotServingRegionException:
org.apache.hadoop.hbase.NotServingRegionException:
mq3,,-872142061201302060
at org.apache.hadoop.hbase.HRegionServer.getRegion(HRegionServer.java:1327)
at org.apache.hadoop.hbase.HRegionServer.getRegion(HRegionServer.java:1299)
at org.apache.hadoop.hbase.HRegionServer.openScanner(HRegionServer.java:1163)
at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:379)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:596)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.apache.hadoop.hbase.RemoteExceptionHandler.decodeRemoteException(RemoteExceptionHandler.java:82)
at org.apache.hadoop.hbase.HTable$ClientScanner.nextScanner(HTable.java:796)
at org.apache.hadoop.hbase.HTable$ClientScanner.<init>(HTable.java:754)
at org.apache.hadoop.hbase.HTable.obtainScanner(HTable.java:451)
at org.apache.hadoop.hbase.HTable.obtainScanner(HTable.java:388)
at org.apache.hadoop.hbase.shell.SelectCommand.scanPrint(SelectCommand.java:199)
at org.apache.hadoop.hbase.shell.SelectCommand.execute(SelectCommand.java:91)
at org.apache.hadoop.hbase.Shell.main(Shell.java:96)
On Jan 24, 2008 2:21 PM, ma qiang <ma...@gmail.com> wrote:
> I'm sure I run the hadoop and hbase using the command .
> I print the master is running using admin.isMasterRunning()==true;
> I have seen the hbase log, I find the follow message in log as below;
> Can you help me to solve this problem? Thank you very much!
>
>
> 2008-01-23 21:34:29,679 INFO
> org.apache.hadoop.hbase.HMaster$RootScanner: HMaster.rootScanner
> exiting
> 2008-01-23 21:34:31,065 INFO org.apache.hadoop.hbase.HMaster: Waiting
> on following regionserver(s) to go down (or region server lease
> expiration, whichever happens first): [address: 127.0.1.1:60020,
> startcode: -4600488168642437787, load: (requests: 0 regions: 7)]
> 2008-01-23 21:34:35,743 INFO
> org.apache.hadoop.hbase.HMaster$MetaScanner: HMaster.metaScanner
> exiting
> 2008-01-23 21:34:41,065 INFO org.apache.hadoop.hbase.HMaster: Waiting
> on following regionserver(s) to go down (or region server lease
> expiration, whichever happens first): [address: 127.0.1.1:60020,
> startcode: -4600488168642437787, load: (requests: 0 regions: 7)]
> 2008-01-23 21:34:51,065 INFO org.apache.hadoop.hbase.HMaster: Waiting
> on following regionserver(s) to go down (or region server lease
> expiration, whichever happens first): [address: 127.0.1.1:60020,
> startcode: -4600488168642437787, load: (requests: 0 regions: 7)]
> 2008-01-23 21:34:58,682 INFO org.apache.hadoop.hbase.Leases:
> HMaster.leaseChecker lease expired 1377822776/1377822776
> 2008-01-23 21:34:58,682 INFO org.apache.hadoop.hbase.HMaster:
> 127.0.1.1:60020 lease expired
> 2008-01-23 21:34:58,682 INFO org.apache.hadoop.hbase.HMaster: Stopping
> infoServer
> 2008-01-23 21:34:58,683 INFO org.mortbay.util.ThreadedServer: Stopping
> Acceptor ServerSocket[addr=0.0.0.0/0.0.0.0,port=0,localport=60010]
> 2008-01-23 21:34:58,750 INFO org.mortbay.http.SocketListener: Stopped
> SocketListener on 0.0.0.0:60010
> 2008-01-23 21:34:58,791 INFO org.mortbay.util.Container: Stopped
> HttpContext[/static,/static]
> 2008-01-23 21:34:58,845 INFO org.mortbay.util.Container: Stopped
> HttpContext[/logs,/logs]
> 2008-01-23 21:34:58,845 INFO org.mortbay.util.Container: Stopped
> org.mortbay.jetty.servlet.WebApplicationHandler@1c50507
> 2008-01-23 21:34:58,944 INFO org.mortbay.util.Container: Stopped
> WebApplicationContext[/,/]
> 2008-01-23 21:34:58,944 INFO org.mortbay.util.Container: Stopped
> org.mortbay.jetty.Server@1dd3812
> 2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: Stopping
> server on 60000
> 2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 1 on 60000: exiting
> 2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 3 on 60000: exiting
> 2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 6 on 60000: exiting
> 2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 9 on 60000: exiting
> 2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 8 on 60000: exiting
> 2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 7 on 60000: exiting
> 2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 5 on 60000: exiting
> 2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 4 on 60000: exiting
> 2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 2 on 60000: exiting
> 2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 0 on 60000: exiting
> 2008-01-23 21:34:58,956 INFO org.apache.hadoop.hbase.Leases: HMaster
> closing leases
> 2008-01-23 21:34:58,956 INFO
> org.apache.hadoop.hbase.Leases$LeaseMonitor: HMaster.leaseChecker
> exiting
> 2008-01-23 21:34:58,956 INFO org.apache.hadoop.hbase.Leases: HMaster
> closed leases
> 2008-01-23 21:34:58,956 INFO org.apache.hadoop.hbase.HMaster: HMaster
> main thread exiting
> 2008-01-23 21:34:58,957 INFO org.apache.hadoop.ipc.Server: Stopping
> IPC Server listener on 60000
>
>
>
>
>
>
>
> On Jan 24, 2008 1:25 PM, stack <st...@duboce.net> wrote:
> > Is hbase running?
> >
> > Check your logs to see if you can figure why client is unable to
> > connect. See $HADOOP_HOME/logs. Look in the hbase* logs.
> >
> > St.Ack
> >
> >
> >
> > ma qiang wrote:
> > > I connect to HBase using HBaseAdmin and HTable class succefully,
> > > suddenly can't manipulate HBase and the error print as belows:
> > >
> > > java.net.SocketTimeoutException: timed out waiting for rpc response
> > > at org.apache.hadoop.ipc.Client.call(Client.java:484)
> > > at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:184)
> > > at $Proxy0.deleteTable(Unknown Source)
> > > at org.apache.hadoop.hbase.HBaseAdmin.deleteTable(HBaseAdmin.java:169)
> > > at hbasetest.DeleteTable.main(DeleteTable.java:29)
> > > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > > at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > > at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > > at java.lang.reflect.Method.invoke(Method.java:597)
> > > at org.apache.hadoop.util.RunJar.main(RunJar.java:155)
> > >
> > > Can you tell me why and how to solve this problem. Thank you very much.
> > >
> > > Best wishes;
> > >
> >
> >
>
Re: can't connect to HBase any more
Posted by stack <st...@duboce.net>.
Try reading the log. The below excerpt describes an hbase cluster
shutting itself down.
I'd suggest starting and stopping a cluster a few times while at the
same time tailing the logs; get to know whats normal. Then when the
abnormal shows up, you'll have a fighting chance identifying it.
Yours,
St.Ack
ma qiang wrote:
> I'm sure I run the hadoop and hbase using the command .
> I print the master is running using admin.isMasterRunning()==true;
> I have seen the hbase log, I find the follow message in log as below;
> Can you help me to solve this problem? Thank you very much!
>
>
> 2008-01-23 21:34:29,679 INFO
> org.apache.hadoop.hbase.HMaster$RootScanner: HMaster.rootScanner
> exiting
> 2008-01-23 21:34:31,065 INFO org.apache.hadoop.hbase.HMaster: Waiting
> on following regionserver(s) to go down (or region server lease
> expiration, whichever happens first): [address: 127.0.1.1:60020,
> startcode: -4600488168642437787, load: (requests: 0 regions: 7)]
> 2008-01-23 21:34:35,743 INFO
> org.apache.hadoop.hbase.HMaster$MetaScanner: HMaster.metaScanner
> exiting
> 2008-01-23 21:34:41,065 INFO org.apache.hadoop.hbase.HMaster: Waiting
> on following regionserver(s) to go down (or region server lease
> expiration, whichever happens first): [address: 127.0.1.1:60020,
> startcode: -4600488168642437787, load: (requests: 0 regions: 7)]
> 2008-01-23 21:34:51,065 INFO org.apache.hadoop.hbase.HMaster: Waiting
> on following regionserver(s) to go down (or region server lease
> expiration, whichever happens first): [address: 127.0.1.1:60020,
> startcode: -4600488168642437787, load: (requests: 0 regions: 7)]
> 2008-01-23 21:34:58,682 INFO org.apache.hadoop.hbase.Leases:
> HMaster.leaseChecker lease expired 1377822776/1377822776
> 2008-01-23 21:34:58,682 INFO org.apache.hadoop.hbase.HMaster:
> 127.0.1.1:60020 lease expired
> 2008-01-23 21:34:58,682 INFO org.apache.hadoop.hbase.HMaster: Stopping
> infoServer
> 2008-01-23 21:34:58,683 INFO org.mortbay.util.ThreadedServer: Stopping
> Acceptor ServerSocket[addr=0.0.0.0/0.0.0.0,port=0,localport=60010]
> 2008-01-23 21:34:58,750 INFO org.mortbay.http.SocketListener: Stopped
> SocketListener on 0.0.0.0:60010
> 2008-01-23 21:34:58,791 INFO org.mortbay.util.Container: Stopped
> HttpContext[/static,/static]
> 2008-01-23 21:34:58,845 INFO org.mortbay.util.Container: Stopped
> HttpContext[/logs,/logs]
> 2008-01-23 21:34:58,845 INFO org.mortbay.util.Container: Stopped
> org.mortbay.jetty.servlet.WebApplicationHandler@1c50507
> 2008-01-23 21:34:58,944 INFO org.mortbay.util.Container: Stopped
> WebApplicationContext[/,/]
> 2008-01-23 21:34:58,944 INFO org.mortbay.util.Container: Stopped
> org.mortbay.jetty.Server@1dd3812
> 2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: Stopping
> server on 60000
> 2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 1 on 60000: exiting
> 2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 3 on 60000: exiting
> 2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 6 on 60000: exiting
> 2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 9 on 60000: exiting
> 2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 8 on 60000: exiting
> 2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 7 on 60000: exiting
> 2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 5 on 60000: exiting
> 2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 4 on 60000: exiting
> 2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 2 on 60000: exiting
> 2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
> handler 0 on 60000: exiting
> 2008-01-23 21:34:58,956 INFO org.apache.hadoop.hbase.Leases: HMaster
> closing leases
> 2008-01-23 21:34:58,956 INFO
> org.apache.hadoop.hbase.Leases$LeaseMonitor: HMaster.leaseChecker
> exiting
> 2008-01-23 21:34:58,956 INFO org.apache.hadoop.hbase.Leases: HMaster
> closed leases
> 2008-01-23 21:34:58,956 INFO org.apache.hadoop.hbase.HMaster: HMaster
> main thread exiting
> 2008-01-23 21:34:58,957 INFO org.apache.hadoop.ipc.Server: Stopping
> IPC Server listener on 60000
>
>
>
>
>
>
> On Jan 24, 2008 1:25 PM, stack <st...@duboce.net> wrote:
>
>> Is hbase running?
>>
>> Check your logs to see if you can figure why client is unable to
>> connect. See $HADOOP_HOME/logs. Look in the hbase* logs.
>>
>> St.Ack
>>
>>
>>
>> ma qiang wrote:
>>
>>> I connect to HBase using HBaseAdmin and HTable class succefully,
>>> suddenly can't manipulate HBase and the error print as belows:
>>>
>>> java.net.SocketTimeoutException: timed out waiting for rpc response
>>> at org.apache.hadoop.ipc.Client.call(Client.java:484)
>>> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:184)
>>> at $Proxy0.deleteTable(Unknown Source)
>>> at org.apache.hadoop.hbase.HBaseAdmin.deleteTable(HBaseAdmin.java:169)
>>> at hbasetest.DeleteTable.main(DeleteTable.java:29)
>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>>> at java.lang.reflect.Method.invoke(Method.java:597)
>>> at org.apache.hadoop.util.RunJar.main(RunJar.java:155)
>>>
>>> Can you tell me why and how to solve this problem. Thank you very much.
>>>
>>> Best wishes;
>>>
>>>
>>
Re: can't connect to HBase any more
Posted by ma qiang <ma...@gmail.com>.
I'm sure I run the hadoop and hbase using the command .
I print the master is running using admin.isMasterRunning()==true;
I have seen the hbase log, I find the follow message in log as below;
Can you help me to solve this problem? Thank you very much!
2008-01-23 21:34:29,679 INFO
org.apache.hadoop.hbase.HMaster$RootScanner: HMaster.rootScanner
exiting
2008-01-23 21:34:31,065 INFO org.apache.hadoop.hbase.HMaster: Waiting
on following regionserver(s) to go down (or region server lease
expiration, whichever happens first): [address: 127.0.1.1:60020,
startcode: -4600488168642437787, load: (requests: 0 regions: 7)]
2008-01-23 21:34:35,743 INFO
org.apache.hadoop.hbase.HMaster$MetaScanner: HMaster.metaScanner
exiting
2008-01-23 21:34:41,065 INFO org.apache.hadoop.hbase.HMaster: Waiting
on following regionserver(s) to go down (or region server lease
expiration, whichever happens first): [address: 127.0.1.1:60020,
startcode: -4600488168642437787, load: (requests: 0 regions: 7)]
2008-01-23 21:34:51,065 INFO org.apache.hadoop.hbase.HMaster: Waiting
on following regionserver(s) to go down (or region server lease
expiration, whichever happens first): [address: 127.0.1.1:60020,
startcode: -4600488168642437787, load: (requests: 0 regions: 7)]
2008-01-23 21:34:58,682 INFO org.apache.hadoop.hbase.Leases:
HMaster.leaseChecker lease expired 1377822776/1377822776
2008-01-23 21:34:58,682 INFO org.apache.hadoop.hbase.HMaster:
127.0.1.1:60020 lease expired
2008-01-23 21:34:58,682 INFO org.apache.hadoop.hbase.HMaster: Stopping
infoServer
2008-01-23 21:34:58,683 INFO org.mortbay.util.ThreadedServer: Stopping
Acceptor ServerSocket[addr=0.0.0.0/0.0.0.0,port=0,localport=60010]
2008-01-23 21:34:58,750 INFO org.mortbay.http.SocketListener: Stopped
SocketListener on 0.0.0.0:60010
2008-01-23 21:34:58,791 INFO org.mortbay.util.Container: Stopped
HttpContext[/static,/static]
2008-01-23 21:34:58,845 INFO org.mortbay.util.Container: Stopped
HttpContext[/logs,/logs]
2008-01-23 21:34:58,845 INFO org.mortbay.util.Container: Stopped
org.mortbay.jetty.servlet.WebApplicationHandler@1c50507
2008-01-23 21:34:58,944 INFO org.mortbay.util.Container: Stopped
WebApplicationContext[/,/]
2008-01-23 21:34:58,944 INFO org.mortbay.util.Container: Stopped
org.mortbay.jetty.Server@1dd3812
2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: Stopping
server on 60000
2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 1 on 60000: exiting
2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 3 on 60000: exiting
2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 6 on 60000: exiting
2008-01-23 21:34:58,944 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 9 on 60000: exiting
2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 8 on 60000: exiting
2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 7 on 60000: exiting
2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 5 on 60000: exiting
2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 4 on 60000: exiting
2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 2 on 60000: exiting
2008-01-23 21:34:58,955 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 0 on 60000: exiting
2008-01-23 21:34:58,956 INFO org.apache.hadoop.hbase.Leases: HMaster
closing leases
2008-01-23 21:34:58,956 INFO
org.apache.hadoop.hbase.Leases$LeaseMonitor: HMaster.leaseChecker
exiting
2008-01-23 21:34:58,956 INFO org.apache.hadoop.hbase.Leases: HMaster
closed leases
2008-01-23 21:34:58,956 INFO org.apache.hadoop.hbase.HMaster: HMaster
main thread exiting
2008-01-23 21:34:58,957 INFO org.apache.hadoop.ipc.Server: Stopping
IPC Server listener on 60000
On Jan 24, 2008 1:25 PM, stack <st...@duboce.net> wrote:
> Is hbase running?
>
> Check your logs to see if you can figure why client is unable to
> connect. See $HADOOP_HOME/logs. Look in the hbase* logs.
>
> St.Ack
>
>
>
> ma qiang wrote:
> > I connect to HBase using HBaseAdmin and HTable class succefully,
> > suddenly can't manipulate HBase and the error print as belows:
> >
> > java.net.SocketTimeoutException: timed out waiting for rpc response
> > at org.apache.hadoop.ipc.Client.call(Client.java:484)
> > at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:184)
> > at $Proxy0.deleteTable(Unknown Source)
> > at org.apache.hadoop.hbase.HBaseAdmin.deleteTable(HBaseAdmin.java:169)
> > at hbasetest.DeleteTable.main(DeleteTable.java:29)
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > at java.lang.reflect.Method.invoke(Method.java:597)
> > at org.apache.hadoop.util.RunJar.main(RunJar.java:155)
> >
> > Can you tell me why and how to solve this problem. Thank you very much.
> >
> > Best wishes;
> >
>
>
Re: can't connect to HBase any more
Posted by stack <st...@duboce.net>.
Is hbase running?
Check your logs to see if you can figure why client is unable to
connect. See $HADOOP_HOME/logs. Look in the hbase* logs.
St.Ack
ma qiang wrote:
> I connect to HBase using HBaseAdmin and HTable class succefully,
> suddenly can't manipulate HBase and the error print as belows:
>
> java.net.SocketTimeoutException: timed out waiting for rpc response
> at org.apache.hadoop.ipc.Client.call(Client.java:484)
> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:184)
> at $Proxy0.deleteTable(Unknown Source)
> at org.apache.hadoop.hbase.HBaseAdmin.deleteTable(HBaseAdmin.java:169)
> at hbasetest.DeleteTable.main(DeleteTable.java:29)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:155)
>
> Can you tell me why and how to solve this problem. Thank you very much.
>
> Best wishes;
>