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From 梁景明 <futur...@gmail.com>
Subject Re: Fail to connect a remote hbase server with java api
Date Sat, 24 Oct 2009 13:02:37 GMT
hi ,thanks,  follow it , i could get the result ,
keyvalues={1/id:/1256404800426/Put/vlen=1}

i used it in my web project ,it fails ,but in local ubuntu testing
my web project goes well .

what do u guess to deal with it .

=================
> ./bin/hbase Test
>
> (Make sure Test.class is on the hbase CLASSPATH -- add path to Test.class
to
> hbase-env.sh under conf directory)
==================

2009/10/24 Tatsuya Kawano <tatsuyaml@snowcocoa.info>

> Hi,
>
> On Sat, Oct 24, 2009 at 6:37 PM, 梁景明 wrote:
> > HBase tree in ZooKeeper is rooted at /hbase
> >  Cluster up? true
> >  In safe mode? false
> >  Master address: 222.73.236.160:60000
> >  Region server holding ROOT: 222.73.236.160:60020
> >  Region servers:
> >    - 222.73.236.160:60020
>
> Thanks for the info. This just looks fine. And you also have opened
> port 60020, right?
>
>
> > org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode
> =
> > NodeExists
>
> This exception is becoming popular in HBase 0.20.1. Since it's
> harmless, you can safely ignore it.
>
>
>
> On Sat, Oct 24, 2009 at 7:06 PM, 梁景明 <futureha@gmail.com> wrote:
> > 2009-10-25 01:39:57,351 INFO org.apache.hadoop.ipc.HBaseServer: IPC
> Server
> > handler 8 on 60020, call null([B@1b67d6a) from 222.73.236.160:42277:
> error:
> > java.io.IOException: java.lang.NullPointerException
> > java.io.IOException: java.lang.NullPointerException
>
> OK. This is the same exception I saw in the client stack trace you
> attached in the first email. Your HBase 0.20.1 based program is
> failing on the following line ("server.getRegionInfo()") in
> HConnectionManager.java. It seems real exception occurs on the region
> server side (HBaseServer.java) but I don't know why (yet.)
>
> ===================================
>          HRegionInterface server = getHRegionConnection(rootRegionAddress);
>          // if this works, then we're good, and we have an acceptable
> address,
>          // so we can stop doing retries and return the result.
>          server.getRegionInfo(HRegionInfo.ROOT_REGIONINFO.getRegionName());
> ===================================
>
>
> Can you enable DEBUG logging on the server side, so we could see more
> details?
>
>
>
> > and i try a small java test in remote hbase server ,it also fails. if it
> 's
> > the port problem ,
> > to connect by itself maybe not refused.
> >
> >        HBaseConfiguration conf = new HBaseConfiguration();
> >        HTable table = new HTable(conf, "blog".getBytes());
> >        Get g = new Get("1".getBytes());
> >        Result r = table.get(g);
> >        System.out.println(r);
>
> > but i dont understand ,why does hbase shell work well.
>
> Can you try the following stuff with your small java test, so that you
> can check if this is a classpath or config issue. Run it on the remote
> server where the HBase is running.
>
>
> On Tue, Oct 20, 2009 at 2:01 PM, stack wrote:
> > Try running your program like this:
> >
> > ./bin/hbase Test
> >
> > (Make sure Test.class is on the hbase CLASSPATH -- add path to Test.class
> to
> > hbase-env.sh under conf directory)
> >
> > Doing above will ensure you get same CLASSPATH as your working shell.
> >
> > St.Ack
>
>
> Thanks,
>
> --
> Tatsuya Kawano (Mr.)
> Tokyo, Japan
>

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