通过Java代码进行Apache Drill JDBC连接会出错：连接到Drill失败：oadd.org.apache.drill.exec.rpc.RpcException

时间：2018-03-08 08:39:27

标签： jdbc apache-drill

我正在通过java代码尝试drill-jdbc连接。

错误是： -

java.sql.SQLException：连接到Drill失败：oadd.org.apache.drill.exec.rpc.RpcException：CONNECTION：java.net.ConnectException：连接被拒绝：无更多信息：localhost / 127.0 .0.1：31010

所以接下来的步骤如下： -

  1. wget http://www-eu.apache.org/dist/drill/drill-1.12.0/apache-drill-1.12.0.tar.gz
  2. tar -xvf apache-drill-1.12.0.tar.gz
  3. cd apache-drill-1.12.0
  4. cd bin
  5. ./ drillbit.sh start -Ddrill.exec.http.port = 8765
  6. 检查它是否在zookeeeper下运行
  7. cd / usr / hdp / current / zookeeper-client
  8. ./ zkCli.sh
  9. ls / drill
  10. 在apache-drill-1.12.0 / bin
    11. 中
  11. 启动了drill-localhost＃。/ drill-localhost 收到的内容＆＃34; OpenJDK 64位服务器VM警告：忽略选项MaxPermSize = 512M;在8.0 apache drill 1.12.0＆＃34;中删除了支持。 正常的数据库查询工作正常

    12. jdk -version之间有任何依赖吗？

    Java代码： - 

    import java.sql.*;
public class DrillJDBCExample {
static final String JDBC_DRIVER = "org.apache.drill.jdbc.Driver";
static final String DB_URL = "jdbc:drill:drillbit=localhost:";//"jdbc:drill:zk=localhost:2181";
//"jdbc:drill:drillbit=localhost";


static final String USER = "admin";
static final String PASS = "admin";


public static void main(String[] args) throws ClassNotFoundException, SQLException {
  /*    Class.forName("org.apache.drill.jdbc.Driver");
    Connection connection =DriverManager.getConnection("jdbc:drill:drillbit=127.0.0.1:8765");
    Statement st = connection.createStatement();
    ResultSet rs = st.executeQuery("SELECT * from cp.`employee`");
    while(rs.next()){
    System.out.println(rs.getString(1));
    }
}*/
    Connection conn = null;
    Statement stmt = null;
    try{
        Class.forName(JDBC_DRIVER);
        conn = DriverManager.getConnection(DB_URL,USER,PASS);


        stmt = conn.createStatement();
       //  Perform a select on data in the classpath storage plugin. 
        String sql = "select employee_id,first_name,last_name from cp.`employee.json`";
        ResultSet rs = stmt.executeQuery(sql);


        while(rs.next()) {
            int id  = rs.getInt("employee_id");
            String first = rs.getString("first_name");
            String last = rs.getString("last_name");


            System.out.print("ID: " + id);
            System.out.print(", First: " + first);
            System.out.println(", Last: " + last);
        }


        rs.close();
        stmt.close();
        conn.close();
    } catch(SQLException se) {
        //Handle errors for JDBC
        se.printStackTrace();
    } catch(Exception e) {
        //Handle errors for Class.forName
        e.printStackTrace();
    } finally {
        try{
            if(stmt!=null)
                stmt.close();
        } catch(SQLException se2) {
        }
        try {
            if(conn!=null)
                conn.close();
        } catch(SQLException se) {
            se.printStackTrace();
        }
    }
    }

}

    错误日志： - 

    SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
java.sql.SQLException: Failure in connecting to Drill: oadd.org.apache.drill.exec.rpc.RpcException: HANDSHAKE_COMMUNICATION : Channel closed /127.0.0.1:60181 <--> localhost/127.0.0.1:8765.
at org.apache.drill.jdbc.impl.DrillConnectionImpl.<init>(DrillConnectionImpl.java:162)
at org.apache.drill.jdbc.impl.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:64)
at org.apache.drill.jdbc.impl.DrillFactory.newConnection(DrillFactory.java:69)
at oadd.net.hydromatic.avatica.UnregisteredDriver.connect(UnregisteredDriver.java:126)
at org.apache.drill.jdbc.Driver.connect(Driver.java:72)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at com.mapr.drill.DrillJDBCExample.main(DrillJDBCExample.java:29)
Caused by: oadd.org.apache.drill.exec.rpc.RpcException: HANDSHAKE_COMMUNICATION : Channel closed /127.0.0.1:60181 <--> localhost/127.0.0.1:8765.
at oadd.org.apache.drill.exec.client.DrillClient$FutureHandler.connectionFailed(DrillClient.java:675)
at oadd.org.apache.drill.exec.rpc.user.QueryResultHandler$ChannelClosedHandler.connectionFailed(QueryResultHandler.java:389)
at oadd.org.apache.drill.exec.rpc.BasicClient$ConnectionMultiListener$HandshakeSendHandler.failed(BasicClient.java:254)
at oadd.org.apache.drill.exec.rpc.RequestIdMap$RpcListener.setException(RequestIdMap.java:134)
at oadd.org.apache.drill.exec.rpc.RequestIdMap$SetExceptionProcedure.apply(RequestIdMap.java:74)
at oadd.org.apache.drill.exec.rpc.RequestIdMap$SetExceptionProcedure.apply(RequestIdMap.java:64)
at oadd.com.carrotsearch.hppc.IntObjectHashMap.forEach(IntObjectHashMap.java:692)
at oadd.org.apache.drill.exec.rpc.RequestIdMap.channelClosed(RequestIdMap.java:58)
at oadd.org.apache.drill.exec.rpc.RemoteConnection.channelClosed(RemoteConnection.java:175)
at oadd.org.apache.drill.exec.rpc.RpcBus$ChannelClosedHandler.operationComplete(RpcBus.java:167)
at oadd.org.apache.drill.exec.rpc.RpcBus$ChannelClosedHandler.operationComplete(RpcBus.java:146)
at oadd.io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:680)
at oadd.io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:567)
at oadd.io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:406)
at oadd.io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:82)
at oadd.io.netty.channel.AbstractChannel$CloseFuture.setClosed(AbstractChannel.java:943)
at oadd.io.netty.channel.AbstractChannel$AbstractUnsafe.doClose0(AbstractChannel.java:592)
at oadd.io.netty.channel.AbstractChannel$AbstractUnsafe.close(AbstractChannel.java:584)
at oadd.io.netty.channel.DefaultChannelPipeline$HeadContext.close(DefaultChannelPipeline.java:1099)
at oadd.io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:615)
at oadd.io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:600)
at oadd.io.netty.channel.ChannelOutboundHandlerAdapter.close(ChannelOutboundHandlerAdapter.java:71)
at oadd.io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:615)
at oadd.io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:600)
at oadd.io.netty.channel.ChannelDuplexHandler.close(ChannelDuplexHandler.java:73)
at oadd.io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:615)
at oadd.io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:600)
at oadd.io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:466)
at oadd.org.apache.drill.exec.rpc.RpcExceptionHandler.exceptionCaught(RpcExceptionHandler.java:39)
at oadd.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:275)
at oadd.io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:253)
at oadd.io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:131)
at oadd.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:275)
at oadd.io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:253)
at oadd.io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:131)
at oadd.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:275)
at oadd.io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:253)
at oadd.io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:131)
at oadd.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:275)
at oadd.io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:253)
at oadd.io.netty.channel.ChannelHandlerAdapter.exceptionCaught(ChannelHandlerAdapter.java:79)
at oadd.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:275)
at oadd.io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:253)
at oadd.io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:131)
at oadd.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:275)
at oadd.io.netty.channel.AbstractChannelHandlerContext.notifyHandlerException(AbstractChannelHandlerContext.java:809)
at oadd.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:341)
at oadd.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
at oadd.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:242)
at oadd.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
at oadd.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
at oadd.io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
at oadd.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
at oadd.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
at oadd.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:847)
at oadd.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
at oadd.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)
at oadd.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
at oadd.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
at oadd.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
at oadd.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
at java.lang.Thread.run(Unknown Source)
Caused by: oadd.org.apache.drill.exec.rpc.ChannelClosedException: Channel closed /127.0.0.1:60181 <--> localhost/127.0.0.1:8765.
at oadd.org.apache.drill.exec.rpc.RpcBus$ChannelClosedHandler.operationComplete(RpcBus.java:166)
... 52 more

    以下文件是： -

    1）https://drill.apache.org/docs/

    2）https://community.hortonworks.com/articles/10551/apache-drill-unofficial-introduction.html

0 个答案:

没有答案
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