现在非常喜欢IDEA，之前在mac 上用的eclipse 经常出现无缘无故的错误。所以转为IDEA.  不过新工具需要学习成本，手头上的项目就遇到了很多问题，现列举如下：

背景描述

在hadoop 开发时，经常在mr阶段将清洗后的数据入库到Hbase. 在这个过程中，需要编译、打jar包，然后上传到服务器，执行hadoop jar   *.jar 命令。每次清洗后需要手动4步操作。农民阿姨天生喜欢取巧，故这几天一直研究如何简化此过程。

思路描述

1.之前项目自动化打包上传都用ant ，不过是在window系统下eclipse开发的。但是在mac的IDEA中，屡次失败。总是出现如下错误信息

Exception in thread "main" java.lang.SecurityException: Invalid signature file digest for Manifest main attributes

        at sun.security.util.SignatureFileVerifier.processImpl(SignatureFileVerifier.java:287)

        at sun.security.util.SignatureFileVerifier.process(SignatureFileVerifier.java:240)

        at java.util.jar.JarVerifier.processEntry(JarVerifier.java:317)

        at java.util.jar.JarVerifier.update(JarVerifier.java:228)

        at java.util.jar.JarFile.initializeVerifier(JarFile.java:348)

        at java.util.jar.JarFile.getInputStream(JarFile.java:415)

        at org.apache.hadoop.util.RunJar.unJar(RunJar.java:101)

        at org.apache.hadoop.util.RunJar.unJar(RunJar.java:81)

        at org.apache.hadoop.util.RunJar.run(RunJar.java:209)

        at org.apache.hadoop.util.RunJar.main(RunJar.java:136)

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }

网上搜了很多资料，解决方案都是失败。原因是 项目中引用的jar包签名有问题。（之前用eclipse导出jar包没有出现过这种情况）

2.用IDEA导出jar包,操作步骤如下
Fiel –>Project Structure

然后出现如下：

选好Manifest File ,Main Class

之后Build->Build Artifacts 可以编译打包了。去项目中 out 文件下可以找到。

但是通过这种打包方式，在运行时报错。因为hbase的lib相关包没有包含进去。这个一种笨的解决方案是在hadoop 中每个节点上的lib包下都拷贝一份hbase的lib包。这种方案有弊端，我没有选择。如何解决这个问题？我用maven 打包，上传jar包，运行，成功。

最终方案：

通过maven可以正常打包，那如何自动化上传并运行呢？我是用maven 打包，用ant 上传并执行的。

maven  pom 文件内容:

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0"

         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>groupId</groupId>

    <artifactId>antdemo</artifactId>

    <version>1</version>

    <dependencies>

        <dependency>

            <groupId>org.apache.hbase</groupId>

            <artifactId>hbase-client</artifactId>

            <version>0.98.15-hadoop2</version>

        </dependency>

        <dependency>

            <groupId>org.apache.hadoop</groupId>

            <artifactId>hadoop-client</artifactId>

            <version>2.6.0</version>

        </dependency>

        <dependency>

            <groupId>org.apache.hadoop</groupId>

            <artifactId>hadoop-mapreduce-client-core</artifactId>

            <version>2.6.0</version>

        </dependency>

        <dependency>

            <groupId>org.apache.hbase</groupId>

            <artifactId>hbase-common</artifactId>

            <version>0.98.15-hadoop2</version>

        </dependency>

        <dependency>

            <groupId>org.apache.hbase</groupId>

            <artifactId>hbase-server</artifactId>

            <version>0.98.15-hadoop2</version>

        </dependency>

        <dependency>

            <groupId>com.jcraft</groupId>

            <artifactId>jsch</artifactId>

            <version>0.1.51</version>

        </dependency>

        <dependency>

            <groupId>org.apache.ant</groupId>

            <artifactId>ant-jsch</artifactId>

            <version>1.9.5</version>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <artifactId>maven-assembly-plugin</artifactId>

                <configuration>

                    <archive>

                        <manifest>

                            <!--这里要替换成jar包main方法所在类-->

                            <mainClass>HBaseImport</mainClass>

                        </manifest>

                    </archive>

                    <descriptorRefs>

                        <descriptorRef>jar-with-dependencies</descriptorRef>

                    </descriptorRefs>

                </configuration>

                <executions>

                    <execution>

                        <id>make-assembly</id> <!-- this is used for inheritance merges -->

                        <phase>package</phase> <!-- 指定在打包节点执行jar包合并操作 -->

                        <goals>

                            <goal>single</goal>

                        </goals>

                    </execution>

                </executions>

            </plugin>

        </plugins>

    </build>

</project>

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }

ant 中的 build.xml的内容：

<?xml version="1.0" encoding="UTF-8"?>

<project name="项目名称" basedir="." default="sshexec">

   <description>本配置文件供ANT编译项目、自动进行单元测试、打包并部署之用。</description>

   <description>默认操作(输入命令：ant)为编译源程序并发布运行。</description>

   <!--属性设置-->

   <property environment="env" />

   <!--<property file="build.xml" />-->

   <property name="build.dir" location="build.xml"/>

   <property name="src.dir" value="${basedir}/src" />

   <!--<property name="java.lib.dir" location="lib"/>-->

   <property name="java.lib.dir" value="/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/lib" />

   <property name="classes.dir" value="${basedir}/classes" />

   <property name="dist.dir" value="${basedir}/dist" />

   <property name="third.lib.dir" value="/Users/zzy/Kclouds/01_mac/doc/workspace/other_workspace/hbase-0.98.8-hadoop2/lib" />

   <!--<property name="third.lib.dir" value="{basedir}/lib" />-->

   <property name="localpath.dir" value="${basedir}" />

   <property name="remote.host" value="192.168.122.211"/>

   <property name="remote.username" value="root"/>

   <property name="remote.password" value="lg"/>

   <property name="remote.home" value="/test"/>

   <!--每次需要知道的main类，写到这里-->

   <property name="main.class" value="HBaseImport"/>

   <!-- 基本编译路径设置 -->

   <path id="compile.classpath">

      <fileset dir="${java.lib.dir}">

         <include name="tools.jar" />

      </fileset>

      <fileset dir="${third.lib.dir}">

         <include name="*.jar"/>

      </fileset>

   </path>

   <!-- 运行路径设置 -->

   <path id="run.classpath">

      <path refid="compile.classpath" />

      <pathelement location="${classes.dir}" />

   </path>

   <!-- 清理,删除临时目录 -->

   <target name="clean" description="清理,删除临时目录">

      <!--delete dir="${build.dir}" /-->

      <delete dir="${dist.dir}" />

      <delete dir="${classes.dir}" />

      <echo level="info">清理完毕</echo>

   </target>

   <!-- 初始化,建立目录,复制文件 -->

   <target name="init" depends="clean" description="初始化,建立目录,复制文件">

      <mkdir dir="${classes.dir}" />

      <mkdir dir="${dist.dir}" />

   </target>

   <!-- 编译源文件-->

   <target name="compile" depends="init" description="编译源文件">

      <javac srcdir="${src.dir}" destdir="${classes.dir}" source="1.7" target="1.7"  includeAntRuntime="false" debug="false" verbose="false">

          <compilerarg line="-encoding UTF-8 "/>

         <classpath refid="compile.classpath" />

      </javac>

   </target>

   <!-- 打包类文件 -->

   <target name="jar" depends="compile" description="打包类文件">

      <jar jarfile="${dist.dir}/jar.jar">

         <fileset dir="${classes.dir}" includes="**/*.*" />

      </jar>

   </target>

   <!--上传到服务器

   **需要把lib目录下的jsch-0.1.51拷贝到$ANT_HOME/lib下，如果是Eclipse下的Ant环境必须在Window->Preferences->Ant->Runtime->Classpath中加入jsch-0.1.51。

   -->

   <!--<target name="ssh" depends="jar">-->

      <!--<scp file="${dist.dir}/jar.jar" todir="${remote.username}@${remote.host}:${remote.home}" password="${remote.password}" trust="true"/>-->

   <!--</target>-->

   <!-- -->

   <!--<target name="sshexec" depends="ssh">-->

         <!--<sshexec host="${remote.host}" username="${remote.username}"  password="${remote.password}" trust="true" command="source /etc/profile;hadoop jar ${remote.home}/jar.jar ${main.class}"/>-->

         <!--&lt;!&ndash;<sshexec host="${remote.host}" username="${remote.username}"  password="${remote.password}" trust="true" command="source /etc/profile;touch  what.text ${main.class}"/>&ndash;&gt;-->

   <!--</target>-->

   <target name="ssh" depends="jar">

      <scp file="${basedir}/target/antdemo-1-jar-with-dependencies.jar" todir="${remote.username}@${remote.host}:${remote.home}" password="${remote.password}" trust="true"/>

   </target>

   <target name="sshexec" depends="ssh">

      <sshexec host="${remote.host}" username="${remote.username}"  password="${remote.password}" trust="true" command="source /etc/profile;hadoop jar ${remote.home}/antdemo-1-jar-with-dependencies.jar ${main.class}"/>

      <!--<sshexec host="${remote.host}" username="${remote.username}"  password="${remote.password}" trust="true" command="source /etc/profile;touch  what.text ${main.class}"/>-->

   </target>

</project>
 
 
最关键的是：
<target name="ssh" depends="jar">

      <scp file="${basedir}/target/antdemo-1-jar-with-dependencies.jar" todir="${remote.username}@${remote.host}:${remote.home}" password="${remote.password}" trust="true"/>

   </target>

   <target name="sshexec" depends="ssh">

      <sshexec host="${remote.host}" username="${remote.username}"  password="${remote.password}" trust="true" command="source /etc/profile;hadoop jar ${remote.home}/antdemo-1-jar-with-dependencies.jar ${main.class}"/>

      <!--<sshexec host="${remote.host}" username="${remote.username}"  password="${remote.password}" trust="true" command="source /etc/profile;touch  what.text ${main.class}"/>-->

   </target>

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }

这步是上传并执行，好好研究一下这步代码。

MR清洗后入库Hbase 代码：

 

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }

package demo;

import org.apache.hadoop.conf.Configuration;

import org.apache.hadoop.hbase.client.Put;

import org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil;

import org.apache.hadoop.hbase.mapreduce.TableOutputFormat;

import org.apache.hadoop.hbase.mapreduce.TableReducer;

import org.apache.hadoop.io.LongWritable;

import org.apache.hadoop.io.NullWritable;

import org.apache.hadoop.io.Text;

//import org.apache.hadoop.mapred.FileInputFormat;

import org.apache.hadoop.mapreduce.Job;

import org.apache.hadoop.mapreduce.Mapper;

import org.apache.hadoop.mapreduce.Reducer;

import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;

import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;

import java.io.IOException;

import java.text.SimpleDateFormat;

import java.util.Date;

/**

 * Created by zzy on 15/11/17.

 */

/**

 * mr 中操作hbase

 */

public class HBaseImport {

    static class BatchImportMapper extends Mapper<LongWritable,Text,LongWritable,Text>{

        @Override

        protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {

            super.map(key, value, context);

            String line = value.toString();

            String[] splited = line.split("\t");

            SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");

            String time =sdf.format(new Date(Long.parseLong(splited[0].trim())));

            String rowkey = splited[1]+"_"+time;

            Text v2s = new Text();

            v2s.set(rowkey+"\t" +line);

            context.write(key,v2s);

        }

    }

    static class BatchImportReducer extends TableReducer<LongWritable,Text,NullWritable> {

        private byte[] family = "cf".getBytes();

        @Override

        protected void reduce(LongWritable key, Iterable<Text> v2s, Context context) throws IOException, InterruptedException {

//            super.reduce(key, values, context);

            for (Text v2 :v2s){

                String [] splited = v2.toString().split("\t");

                String rowKey = splited[0];

                Put put =  new Put(rowKey.getBytes());

                put.add(family,"raw".getBytes(),v2.toString().getBytes());

                put.add(family,"reportTime".getBytes(),splited[1].getBytes());

                put.add(family,"msisdn".getBytes(),splited[2].getBytes());

                put.add(family,"apmac".getBytes(),splited[3].getBytes());

                put.add(family,"acmac".getBytes(),splited[4].getBytes());

            }

        }

    }

    private static final String tableName = "logs";

    private  static  void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {

        Configuration conf = new Configuration();

        conf.set("hbase.zookeeper.quorum","192.168.122.213:2181");

        conf.set("hbase.rootdir","hdfs://192.168.122.211:9000/hbase");

        conf.set(TableOutputFormat.OUTPUT_TABLE, tableName);

        Job job = Job.getInstance(conf,HBaseImport.class.getSimpleName());

        TableMapReduceUtil.addDependencyJars(job);

        job.setJarByClass(HBaseImport.class);

        job.setMapperClass(BatchImportMapper.class);

        job.setReducerClass(BatchImportReducer.class);

        job.setMapOutputKeyClass(LongWritable.class);

        job.setMapOutputValueClass(Text.class);

        job.setInputFormatClass(TextInputFormat.class);

        job.setOutputFormatClass(TableOutputFormat.class);

        FileInputFormat.setInputPaths(job, "hdfs://192.168.122.211:9000/user/hbase");

        job.waitForCompletion(true);

//        FileInputFormat.setInputPaths(job,"");

    }

}

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }

本文章如何对阁下有帮助，希望您高举贵手，支持一下。

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