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" <sjmit...@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
