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From Sachin Mittal <sjmit...@gmail.com>
Subject Re: Connecting to hbase 1.0.3 via java client stuck at zookeeper.ClientCnxn: Session establishment complete on server
Date Wed, 06 Apr 2016 04:23:48 GMT
Hi,
I figured out the issue.
The region server was listening to 192.168.1.102:55964 and not 127.0.0.1:
55964.
192.168.1.102 is the IP of my machine and Sachin-PC is my machine name.

In hosts my entry was
127.0.0.1       localhost.localdomain localhost Sachin-PC

I removed Sachin-PC from there and it works now. Client now connects to
192.168.1.102:55964.

I however don't understand one thing:
in regionservers I have specified: 127.0.0.1
Also in my hbase-site.xml I specified
hbase.zookeeper.quorum as 127.0.0.1

When I do netstat I see zookeeper, master, master web UI, region server web
UI all listening at 0.0.0.0
However regionserver listening at 192.168.1.102 which is my machine's IP
address.

So why is regionserver listening at a different IP.

One more thing, when I start hbase, I see no log file getting generated.
How do I specify log file to be generated.

Thanks
Sachin



On Wed, Apr 6, 2016 at 9:27 AM, Ding,Dongchao <dingdongchao@baidu.com>
wrote:

>
> 1、 Is your zk-path 127.0.0.1:2181 ?  This is default configuration without
> config file.
>
> 2、Set a cache value (100 or 1000 and so on ) for scan object.
>
>
> 在 16/4/4 01:06, "Sachin Mittal" <sjmittal@gmail.com> 写入:
>
> >I am stuck on connecting to hbase 1.0.3 via simple java client.
> >The program hangs at:
> >
> >    [main] zookeeper.ZooKeeper: Initiating client connection,
> >connectString=
> >127.0.0.1:2181 sessionTimeout=90000 watcher=hconnection-0x1e67b8720x0,
> >quorum=127.0.0.1:2181, baseZNode=/hbaseenter code here
> >    [main-SendThread(127.0.0.1:2181)] zookeeper.ClientCnxn: Opening
> socket
> >connection to server 127.0.0.1/127.0.0.1:2181. Will not attempt to
> >authenticate using SASL (unknown error)
> >    [main-SendThread(127.0.0.1:2181)] zookeeper.ClientCnxn: Socket
> >connection established to 127.0.0.1/127.0.0.1:2181, initiating session
> >    [main-SendThread(127.0.0.1:2181)] zookeeper.ClientCnxn: Session
> >establishment complete on server 127.0.0.1/127.0.0.1:2181, sessionid =
> >0x153d8383c530008, negotiated timeout = 40000
> >
> >The code is very simple and standard:
> >
> >      public static void main(String args[]) throws IOException{
> >        // Instantiating Configuration class
> >        Configuration config = HBaseConfiguration.create();
> >        Connection connection =
> >ConnectionFactory.createConnection(config);
> >          // Instantiating Table class
> >        Table  table =
> >connection.getTable(TableName.valueOf(HBaseTables.APPLICATION_TRACE_INDEX)
> >);
> >       // Instantiating the Scan class
> >        Scan scan = new Scan();
> >         // Getting the scan result
> >        ResultScanner scanner = table.getScanner(scan);
> >        // Reading values from scan result
> >        for (Result result = scanner.next(); result != null; result =
> >scanner.next()) {
> >            System.out.println("Found row : " + result);
> >        }
> >        //closing the scanner
> >        scanner.close();
> >        table.close();
> >        connection.close();
> >     }
> >
> >
> >The jars I am using are:
> >
> >    commons-collections-3.2.1.jar
> >    commons-configuration-1.6.jar
> >    commons-lang-2.6.jar
> >    commons-logging-1.2.jar
> >    guava-12.0.1.jar
> >    hadoop-auth-2.5.1.jar
> >    hadoop-client-2.5.1.jar
> >    hadoop-common-2.5.1.jar
> >    hbase-client-1.0.3.jar
> >    hbase-common-1.0.3.jar
> >    hbase-hadoop-compat-1.0.3.jar
> >    hbase-hadoop2-compat-1.0.3.jar
> >    hbase-it-1.0.3.jar
> >    hbase-protocol-1.0.3.jar
> >    hbase-resource-bundle-1.0.3.jar
> >    hbase-rest-1.0.3.jar
> >    htrace-core-3.0.4.jar
> >    htrace-core-3.1.0-incubating.jar
> >    log4j-1.2.17.jar
> >    netty-3.2.4.Final.jar
> >    netty-all-4.0.23.Final.jar
> >    protobuf-java-2.5.0.jar
> >    slf4j-api-1.7.7.jar
> >    slf4j-log4j12-1.7.7.jar
> >    zookeeper-3.4.6.jar
> >
> >My hbase-site.xml is
> >
> >    <configuration>
> >      <property>
> >        <name>hbase.rootdir</name>
> >        <value>file:///path/to/data/hbase</value>
> >      </property>
> >      <property>
> >        <name>hbase.zookeeper.property.dataDir</name>
> >        <value>file:///path/to/data/zookeeper</value>
> >      </property>
> >      <property>
> >        <name>hbase.zookeeper.quorum</name>
> >        <value>127.0.0.1</value>
> >      </property>
> >    </configuration>
> >
> >In my hosts I have this entry:
> >127.0.0.1       localhost.localdomain localhost Sachin-PC
> >
> >Also in hbase regionservers has one entry
> >localhost
> >
> >I have tried many options for hbase.zookeeper.quorum like localhost,
> >Sachin-PC, 127.0.0.1 but none have worked.
> >
> >Also note the jars I am using are of same version in hbase lib.
> >
> >I am just not able to wrap my head around as what is causing the failure
> >to
> >scan table for this simple code.
> >
> >Note the code stops at line ResultScanner scanner =
> >table.getScanner(scan);
> >So connection is happening but it is not getting any data.
> >
> >Also note I am able to run hbase and connect to it via shell and scan
> >tables all fine.
> >
> >Please help!
> >
> >Thanks
> >Sachin
> >
> >ps additional logs:
> >
> >    DEBUG [hconnection-0x1e67b872-shared--pool1-t1] ipc.AbstractRpcClient:
> >Use SIMPLE authentication for service ClientService, sasl=false
> >    DEBUG [hconnection-0x1e67b872-shared--pool1-t1] ipc.AbstractRpcClient:
> >Connecting to Sachin-PC/127.0.0.1:55161
> >
> >    DEBUG [hconnection-0x1e67b872-shared--pool1-t1] ipc.AbstractRpcClient:
> >Use SIMPLE authentication for service ClientService, sasl=false
> >    DEBUG [hconnection-0x1e67b872-shared--pool1-t1] ipc.AbstractRpcClient:
> >Not trying to connect to Sachin-PC/127.0.0.1:55161 this server is in the
> >failed servers list
>
>

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