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From "Brady, John" <john.br...@intel.com>
Subject JDBC connection zookeeper error
Date Mon, 23 Feb 2015 14:58:42 GMT
Hello,

I have Phoenix installed on a 5 node Cloudera cluster with 3 zookeeper nodes.

I'm trying to run a basic SQL command from the JDBC program below but I'm getting zookeeper
errors. Could anybody advise?

org.apache.phoenix.exception.PhoenixIOException: org.apache.hadoop.hbase.MasterNotRunningException:
Can't get connection to ZooKeeper: KeeperErrorCode = ConnectionLoss for /hbase
     at org.apache.phoenix.util.ServerUtil.parseServerException(ServerUtil.java:108)
     at org.apache.phoenix.query.ConnectionQueryServicesImpl.ensureTableCreated(ConnectionQueryServicesImpl.java:832)
     at org.apache.phoenix.query.ConnectionQueryServicesImpl.createTable(ConnectionQueryServicesImpl.java:1126)
     at org.apache.phoenix.query.DelegateConnectionQueryServices.createTable(DelegateConnectionQueryServices.java:110)
     at org.apache.phoenix.schema.MetaDataClient.createTableInternal(MetaDataClient.java:1590)
     at org.apache.phoenix.schema.MetaDataClient.createTable(MetaDataClient.java:568)
     at org.apache.phoenix.compile.CreateTableCompiler$2.execute(CreateTableCompiler.java:175)
     at org.apache.phoenix.jdbc.PhoenixStatement$2.call(PhoenixStatement.java:271)
     at org.apache.phoenix.jdbc.PhoenixStatement$2.call(PhoenixStatement.java:263)
     at org.apache.phoenix.call.CallRunner.run(CallRunner.java:53)
     at org.apache.phoenix.jdbc.PhoenixStatement.executeMutation(PhoenixStatement.java:261)
     at org.apache.phoenix.jdbc.PhoenixStatement.executeUpdate(PhoenixStatement.java:1043)
     at org.apache.phoenix.query.ConnectionQueryServicesImpl$9.call(ConnectionQueryServicesImpl.java:1551)
     at org.apache.phoenix.query.ConnectionQueryServicesImpl$9.call(ConnectionQueryServicesImpl.java:1520)
     at org.apache.phoenix.util.PhoenixContextExecutor.call(PhoenixContextExecutor.java:77)
     at org.apache.phoenix.query.ConnectionQueryServicesImpl.init(ConnectionQueryServicesImpl.java:1520)
     at org.apache.phoenix.jdbc.PhoenixDriver.getConnectionQueryServices(PhoenixDriver.java:162)
     at org.apache.phoenix.jdbc.PhoenixEmbeddedDriver.connect(PhoenixEmbeddedDriver.java:126)
     at org.apache.phoenix.jdbc.PhoenixDriver.connect(PhoenixDriver.java:133)
     at java.sql.DriverManager.getConnection(Unknown Source)
     at java.sql.DriverManager.getConnection(Unknown Source)
     at mysqljbdctest.PhoenixJDBC.main(PhoenixJDBC.java:15)
Caused by: org.apache.hadoop.hbase.MasterNotRunningException: org.apache.hadoop.hbase.MasterNotRunningException:
Can't get connection to ZooKeeper: KeeperErrorCode = ConnectionLoss for /hbase
     at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$StubMaker.makeStub(HConnectionManager.java:1651)
     at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$MasterServiceStubMaker.makeStub(HConnectionManager.java:1677)
     at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getKeepAliveMasterService(HConnectionManager.java:1884)
     at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHTableDescriptor(HConnectionManager.java:2671)
     at org.apache.hadoop.hbase.client.HBaseAdmin.getTableDescriptor(HBaseAdmin.java:397)
     at org.apache.hadoop.hbase.client.HBaseAdmin.getTableDescriptor(HBaseAdmin.java:402)
     at org.apache.phoenix.query.ConnectionQueryServicesImpl.ensureTableCreated(ConnectionQueryServicesImpl.java:764)
     ... 20 more



package mysqljbdctest;

import java.sql.*;

public class PhoenixJDBC {

     public static void main(String args[]) {

     try {
         //Register JDBC Driver
         Class.forName("org.apache.phoenix.jdbc.PhoenixDriver").newInstance();

         Connection conn = DriverManager.getConnection("jdbc:phoenix:54.152.31.122","","");

         //Create a Statement class to execute the SQL statement
         Statement stmt = conn.createStatement();

         //Execute the SQL statement and get the results in a Resultset
         ResultSet rs = stmt.executeQuery("select * from US_POPULATION");

         // Iterate through the ResultSet, displaying two values
         // for each row using the getString method

         while (rs.next())
             System.out.println("Name= " + rs.getString("host"));
     }
     catch (SQLException e) {
         e.printStackTrace();
     }
     catch (Exception e) {
         e.printStackTrace();
     }
     }
     }

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