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From: Tatsuya Kawano <tatsuyaml@snowcocoa.info>
Date: Sat, 24 Oct 2009 17:50:11 +0900
Message-ID: <c52f69030910240150mc27d4e5w34503957cf954fa4@mail.gmail.com>
Subject: Re: Fail to connect a remote hbase server with java api
To: hbase-user@hadoop.apache.org
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

Hello,

On Sat, Oct 24, 2009 at 12:56 PM, =E6=A2=81=E6=99=AF=E6=98=8E wrote:
> i open the 2181 and 2888 ,3888,60010,60030 ,and hadoop server port

You also need to open port 60000 and 60020. 60000 is used by HBase
master, and 60020 is used by HBase region servers. 60010 and 60030 are
not necessary for client to server or server to server communication;
they are for web-based console to monitor HBase status via a web
browser.

Take a look at conf/hbase-defaul.xml. It has all HBase settings with
their default values and descriptions. Those descriptions will help
you to understand what ports HBase uses and what customizations can be
done via hbase-site.xml.


> java.lang.reflect.UndeclaredThrowableException
>    at $Proxy11.getRegionInfo(Unknown Source)
>    at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRoot=
Region(HConnectionManager.java:931)

> Caused by: org.apache.hadoop.ipc.RemoteException: java.io.IOException:
> java.lang.NullPointerException

There is something wrong with locating the region server who is
holding the ROOT region. Can you type "zk_dump" in hbase shell, and
let us know the result?

It will look like some thing like this:

hbase(main):007:0> zk_dump

HBase tree in ZooKeeper is rooted at /hbase
  Cluster up? true
  In safe mode? false
  Master address: 172.16.80.26:60000
  Region server holding ROOT: 172.16.80.27:60020
  Region servers:
    - 172.16.80.27:60020
    - 172.16.80.29:60020
    - 172.16.80.28:60020


Thanks,

--=20
Tatsuya Kawano (Mr.)
Tokyo, Japan


On Sat, Oct 24, 2009 at 12:56 PM, =E6=A2=81=E6=99=AF=E6=98=8E wrote:
> hi, i failed to connect a remote hbase server with java api , i added the
> conf from hbase and hadoop to HbaseConfiguration.
> hbase shell can work no problem in remote server.
> when i use java api to connect the remote hbase,get this error
> at first i think if the centos system closes some ports should be open?
> and i open the 2181 and 2888 ,3888,60010,60030 ,and hadoop server port ,b=
ut
> it still get this error
> or something else i didnt notice. thanks for any help.
>
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client
> environment:zookeeper.version=3D3.2.0--1, built on 05/15/2009 06:05 GMT
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client environment:host.name
> =3Dubuntu1
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client
> environment:java.version=3D1.6.0_16
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client
> environment:java.vendor=3DSun Microsystems Inc.
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client
> environment:java.home=3D/usr/lib/jvm/java-6-sun-1.6.0.16/jre
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client
> environment:java.class.path=3D/home/futureha/download/apache-tomcat-6.0.2=
0/bin/bootstrap.jar:/usr/lib/jvm/java-6-sun-1.6.0.16/lib/tools.jar
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client
> environment:java.library.path=3D/usr/lib/jvm/java-6-sun-1.6.0.16/bin:/hom=
e/futureha/download/apache-tomcat-6.0.20/bin
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client
> environment:java.io.tmpdir=3D/home/futureha/download/apache-tomcat-6.0.20=
/temp
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client
> environment:java.compiler=3D<NA>
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client environment:os.name=3D=
Linux
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client environment:os.arch=3D=
i386
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client
> environment:os.version=3D2.6.28-15-generic
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client environment:user.name
> =3Dfutureha
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client
> environment:user.home=3D/home/futureha
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Client
> environment:user.dir=3D/home/futureha/download/apache-tomcat-6.0.20/bin
> 09/10/24 11:33:36 INFO zookeeper.ZooKeeper: Initiating client connection,
> host=3D222.73.x.x:2181 sessionTimeout=3D60000
> watcher=3Dorg.apache.hadoop.hbase.client.HConnectionManager$ClientZKWatch=
er@1fecaeb
> 09/10/24 11:33:36 INFO zookeeper.ClientCnxn: zookeeper.disableAutoWatchRe=
set
> is false
> 09/10/24 11:33:36 INFO zookeeper.ClientCnxn: Attempting connection to ser=
ver
> /222.73.x.x:2181
> 09/10/24 11:33:36 INFO zookeeper.ClientCnxn: Priming connection to
> java.nio.channels.SocketChannel[connected
> local=3D/192.168.1.103:52693remote=3D/222.73.x.x:2181]
> 09/10/24 11:33:36 INFO zookeeper.ClientCnxn: Server connection successful
> java.lang.reflect.UndeclaredThrowableException
> =C2=A0 =C2=A0at $Proxy11.getRegionInfo(Unknown Source)
> =C2=A0 =C2=A0at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRoot=
Region(HConnectionManager.java:931)
> =C2=A0 =C2=A0at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegi=
on(HConnectionManager.java:573)
> =C2=A0 =C2=A0at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegi=
on(HConnectionManager.java:549)
> =C2=A0 =C2=A0at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegi=
onInMeta(HConnectionManager.java:623)
> =C2=A0 =C2=A0at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegi=
on(HConnectionManager.java:582)
> =C2=A0 =C2=A0at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegi=
on(HConnectionManager.java:549)
> =C2=A0 =C2=A0at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegi=
onInMeta(HConnectionManager.java:623)
> =C2=A0 =C2=A0at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegi=
on(HConnectionManager.java:586)
> =C2=A0 =C2=A0at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegi=
on(HConnectionManager.java:549)
> =C2=A0 =C2=A0at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:=
125)
> =C2=A0 =C2=A0at com.soko.hbase.tool.HbaseUtil.hasThisRow(HbaseUtil.java:5=
28)
> =C2=A0 =C2=A0at com.soko.manage.v4.UserManV4.hasThisUser(UserManV4.java:2=
7)
> =C2=A0 =C2=A0at com.soko.blog.action.login.UserManager.register(UserManag=
er.java:77)
> =C2=A0 =C2=A0at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Metho=
d)
> =C2=A0 =C2=A0at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java=
:39)
> =C2=A0 =C2=A0at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorI=
mpl.java:25)
> =C2=A0 =C2=A0at java.lang.reflect.Method.invoke(Method.java:597)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActio=
nInvocation.java:440)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultA=
ctionInvocation.java:279)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:242)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercep=
t(DefaultWorkflowInterceptor.java:163)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(Met=
hodFilterInterceptor.java:87)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(Valid=
ationInterceptor.java:249)
> =C2=A0 =C2=A0at
> org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor=
.doIntercept(AnnotationValidationInterceptor.java:68)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(Met=
hodFilterInterceptor.java:87)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(=
ConversionErrorInterceptor.java:122)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(Par=
ametersInterceptor.java:195)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(Met=
hodFilterInterceptor.java:87)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(Par=
ametersInterceptor.java:195)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(Met=
hodFilterInterceptor.java:87)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept=
(StaticParametersInterceptor.java:148)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInte=
rceptor.java:93)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUpload=
Interceptor.java:235)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(Mode=
lDrivenInterceptor.java:89)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercep=
t(ScopedModelDrivenInterceptor.java:128)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> org.apache.struts2.interceptor.ProfilingActivationInterceptor.intercept(P=
rofilingActivationInterceptor.java:104)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(D=
ebuggingInterceptor.java:267)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(Chainin=
gInterceptor.java:126)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(Prepar=
eInterceptor.java:138)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(Met=
hodFilterInterceptor.java:87)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterce=
ptor.java:148)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(Servlet=
ConfigInterceptor.java:164)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInter=
ceptor.java:128)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept=
(ExceptionMappingInterceptor.java:176)
> =C2=A0 =C2=A0at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvoc=
ation.java:236)
> =C2=A0 =C2=A0at
> org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:=
52)
> =C2=A0 =C2=A0at
> org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:46=
8)
> =C2=A0 =C2=A0at
> org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteO=
perations.java:77)
> =C2=A0 =C2=A0at
> org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doF=
ilter(StrutsPrepareAndExecuteFilter.java:76)
> =C2=A0 =C2=A0at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applicat=
ionFilterChain.java:235)
> =C2=A0 =C2=A0at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilte=
rChain.java:206)
> =C2=A0 =C2=A0at
> filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.ja=
va:122)
> =C2=A0 =C2=A0at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applicat=
ionFilterChain.java:235)
> =C2=A0 =C2=A0at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilte=
rChain.java:206)
> =C2=A0 =C2=A0at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve=
.java:233)
> =C2=A0 =C2=A0at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve=
.java:191)
> =C2=A0 =C2=A0at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:=
128)
> =C2=A0 =C2=A0at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:=
102)
> =C2=A0 =C2=A0at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.j=
ava:109)
> =C2=A0 =C2=A0at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:29=
3)
> =C2=A0 =C2=A0at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandl=
er.java:190)
> =C2=A0 =C2=A0at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest=
.java:291)
> =C2=A0 =C2=A0at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.j=
ava:769)
> =C2=A0 =C2=A0at
> org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:6=
98)
> =C2=A0 =C2=A0at
> org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.j=
ava:891)
> =C2=A0 =C2=A0at
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.=
java:690)
> =C2=A0 =C2=A0at java.lang.Thread.run(Thread.java:619)
> Caused by: org.apache.hadoop.ipc.RemoteException: java.io.IOException:
> java.lang.NullPointerException
>
> =C2=A0 =C2=A0at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.=
java:723)
> =C2=A0 =C2=A0at
> org.apache.hadoop.hbase.ipc.HBaseRPC$Invoker.invoke(HBaseRPC.java:328)
> =C2=A0 =C2=A0... 85 more
>