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Cloudera Manager가 설치되어 있고 노드 2 개가 마스터 노드에 연결되어 있습니다. https://ccp.cloudera.com/display/SUPPORT/Hadoop+Tutorial#HadoopTutorial-InputsandOutputsCloudera Manager 4.0 워드 카운트 예
클라우 데라 내가 명령 프롬프트에서 나노를 사용하여 만든 WordCount.java 파일을 컴파일 말한다 : 나는이 링크에서 클라우 데라에서 제공하는 튜토리얼을 사용하여 단어 수 프로그램을 실행하려합니다. 디렉토리에 Wordcount_Classes를 만들고 wordcount.java 파일을 거기에 넣습니다. 나는 그 디렉토리가 java 코드가 작동하도록 cloudera 디렉토리 중 하나에있는 곳으로 이동해야하는지 잘 모르겠다. 또는 내가 뭔가 다른 일을하고 있다면. 나는 Cloudera Manager를 설치했고 이미 모든 노드에 ClouderaHadoop을 자동으로 설치했습니다.
[email protected]*****:~/wordcount_classes$ javac WordCount.java
WordCount.java:6: package org.apache.hadoop.fs does not exist
import org.apache.hadoop.fs.Path;
^
WordCount.java:7: package org.apache.hadoop.conf does not exist
import org.apache.hadoop.conf.*;
^
WordCount.java:8: package org.apache.hadoop.io does not exist
import org.apache.hadoop.io.*;
^
WordCount.java:9: package org.apache.hadoop.mapred does not exist
import org.apache.hadoop.mapred.*;
^
WordCount.java:10: package org.apache.hadoop.util does not exist
import org.apache.hadoop.util.*;
^
WordCount.java:14: cannot find symbol
symbol : class MapReduceBase
location: class org.myorg.WordCount
public static class Map extends MapReduceBase implements Mapper<LongWritable, Text, Text, IntWritable> {
^
WordCount.java:14: cannot find symbol
symbol : class Mapper
location: class org.myorg.WordCount
public static class Map extends MapReduceBase implements Mapper<LongWritable, Text, Text, IntWritable> {
^
WordCount.java:14: cannot find symbol
symbol : class LongWritable
location: class org.myorg.WordCount
public static class Map extends MapReduceBase implements Mapper<LongWritable, Text, Text, IntWritable> {
^
WordCount.java:14: cannot find symbol
symbol : class Text
location: class org.myorg.WordCount
public static class Map extends MapReduceBase implements Mapper<LongWritable, Text, Text, IntWritable> {
^
WordCount.java:14: cannot find symbol
symbol : class Text
location: class org.myorg.WordCount
public static class Map extends MapReduceBase implements Mapper<LongWritable, Text, Text, IntWritable> {
^
WordCount.java:14: cannot find symbol
symbol : class IntWritable
location: class org.myorg.WordCount
public static class Map extends MapReduceBase implements Mapper<LongWritable, Text, Text, IntWritable> {
^
WordCount.java:14: interface expected here
public static class Map extends MapReduceBase implements Mapper<LongWritable, Text, Text, IntWritable> {
^
WordCount.java:15: cannot find symbol
symbol : class IntWritable
location: class org.myorg.WordCount.Map
private final static IntWritable one = new IntWritable(1);
^
WordCount.java:16: cannot find symbol
symbol : class Text
location: class org.myorg.WordCount.Map
private Text word = new Text();
^
WordCount.java:18: cannot find symbol
symbol : class LongWritable
location: class org.myorg.WordCount.Map
public void map(LongWritable key, Text value, OutputCollector<Text, IntWritable> output, Reporter reporter) throws IOException {
^
WordCount.java:18: cannot find symbol
symbol : class Text
location: class org.myorg.WordCount.Map
public void map(LongWritable key, Text value, OutputCollector<Text, IntWritable> output, Reporter reporter) throws IOException {
^
WordCount.java:18: cannot find symbol
symbol : class OutputCollector
location: class org.myorg.WordCount.Map
public void map(LongWritable key, Text value, OutputCollector<Text, IntWritable> output, Reporter reporter) throws IOException {
^
WordCount.java:18: cannot find symbol
symbol : class Text
location: class org.myorg.WordCount.Map
public void map(LongWritable key, Text value, OutputCollector<Text, IntWritable> output, Reporter reporter) throws IOException {
^
WordCount.java:18: cannot find symbol
symbol : class IntWritable
location: class org.myorg.WordCount.Map
public void map(LongWritable key, Text value, OutputCollector<Text, IntWritable> output, Reporter reporter) throws IOException {
^
WordCount.java:18: cannot find symbol
symbol : class Reporter
location: class org.myorg.WordCount.Map
public void map(LongWritable key, Text value, OutputCollector<Text, IntWritable> output, Reporter reporter) throws IOException {
^
WordCount.java:28: cannot find symbol
symbol : class MapReduceBase
location: class org.myorg.WordCount
public static class Reduce extends MapReduceBase implements Reducer<Text, IntWritable, Text, IntWritable> {
^
WordCount.java:28: cannot find symbol
symbol : class Reducer
location: class org.myorg.WordCount
public static class Reduce extends MapReduceBase implements Reducer<Text, IntWritable, Text, IntWritable> {
^
WordCount.java:28: cannot find symbol
symbol : class Text
location: class org.myorg.WordCount
public static class Reduce extends MapReduceBase implements Reducer<Text, IntWritable, Text, IntWritable> {
^
WordCount.java:28: cannot find symbol
symbol : class IntWritable
location: class org.myorg.WordCount
public static class Reduce extends MapReduceBase implements Reducer<Text, IntWritable, Text, IntWritable> {
^
WordCount.java:28: cannot find symbol
symbol : class Text
location: class org.myorg.WordCount
public static class Reduce extends MapReduceBase implements Reducer<Text, IntWritable, Text, IntWritable> {
^
WordCount.java:28: cannot find symbol
symbol : class IntWritable
location: class org.myorg.WordCount
public static class Reduce extends MapReduceBase implements Reducer<Text, IntWritable, Text, IntWritable> {
^
WordCount.java:28: interface expected here
public static class Reduce extends MapReduceBase implements Reducer<Text, IntWritable, Text, IntWritable> {
^
WordCount.java:29: cannot find symbol
symbol : class Text
location: class org.myorg.WordCount.Reduce
public void reduce(Text key, Iterator<IntWritable> values, OutputCollector<Text, IntWritable> output, Reporter reporter) throws IOException {
^
WordCount.java:29: cannot find symbol
symbol : class IntWritable
location: class org.myorg.WordCount.Reduce
public void reduce(Text key, Iterator<IntWritable> values, OutputCollector<Text, IntWritable> output, Reporter reporter) throws IOException {
^
WordCount.java:29: cannot find symbol
symbol : class OutputCollector
location: class org.myorg.WordCount.Reduce
public void reduce(Text key, Iterator<IntWritable> values, OutputCollector<Text, IntWritable> output, Reporter reporter) throws IOException {
^
WordCount.java:29: cannot find symbol
symbol : class Text
location: class org.myorg.WordCount.Reduce
public void reduce(Text key, Iterator<IntWritable> values, OutputCollector<Text, IntWritable> output, Reporter reporter) throws IOException {
^
WordCount.java:29: cannot find symbol
symbol : class IntWritable
location: class org.myorg.WordCount.Reduce
public void reduce(Text key, Iterator<IntWritable> values, OutputCollector<Text, IntWritable> output, Reporter reporter) throws IOException {
^
WordCount.java:29: cannot find symbol
symbol : class Reporter
location: class org.myorg.WordCount.Reduce
public void reduce(Text key, Iterator<IntWritable> values, OutputCollector<Text, IntWritable> output, Reporter reporter) throws IOException {
^
WordCount.java:15: cannot find symbol
symbol : class IntWritable
location: class org.myorg.WordCount.Map
private final static IntWritable one = new IntWritable(1);
^
WordCount.java:16: cannot find symbol
symbol : class Text
location: class org.myorg.WordCount.Map
private Text word = new Text();
^
WordCount.java:32: operator + cannot be applied to int,IntWritable.get
sum += values.next().get();
^
WordCount.java:32: inconvertible types
found : <nulltype>
required: int
sum += values.next().get();
^
WordCount.java:34: cannot find symbol
symbol : class IntWritable
location: class org.myorg.WordCount.Reduce
output.collect(key, new IntWritable(sum));
^
WordCount.java:39: cannot find symbol
symbol : class JobConf
location: class org.myorg.WordCount
JobConf conf = new JobConf(WordCount.class);
^
WordCount.java:39: cannot find symbol
symbol : class JobConf
location: class org.myorg.WordCount
JobConf conf = new JobConf(WordCount.class);
^
WordCount.java:42: cannot find symbol
symbol : class Text
location: class org.myorg.WordCount
conf.setOutputKeyClass(Text.class);
^
WordCount.java:43: cannot find symbol
symbol : class IntWritable
location: class org.myorg.WordCount
conf.setOutputValueClass(IntWritable.class);
^
WordCount.java:49: cannot find symbol
symbol : class TextInputFormat
location: class org.myorg.WordCount
conf.setInputFormat(TextInputFormat.class);
^
WordCount.java:50: cannot find symbol
symbol : class TextOutputFormat
location: class org.myorg.WordCount
conf.setOutputFormat(TextOutputFormat.class);
^
WordCount.java:52: cannot find symbol
symbol : class Path
location: class org.myorg.WordCount
FileInputFormat.setInputPaths(conf, new Path(args[0]));
^
WordCount.java:52: cannot find symbol
symbol : variable FileInputFormat
location: class org.myorg.WordCount
FileInputFormat.setInputPaths(conf, new Path(args[0]));
^
WordCount.java:53: cannot find symbol
symbol : class Path
location: class org.myorg.WordCount
FileOutputFormat.setOutputPath(conf, new Path(args[1]));
^
WordCount.java:53: cannot find symbol
symbol : variable FileOutputFormat
location: class org.myorg.WordCount
FileOutputFormat.setOutputPath(conf, new Path(args[1]));
^
WordCount.java:55: cannot find symbol
symbol : variable JobClient
location: class org.myorg.WordCount
JobClient.runJob(conf);
^
49 errors
은 누군가가 나를 단어 수 프로그램을 실행하거나 내가 무엇을해야하는지에 나를 안내 도와주세요 수 또는 누군가가 좋은 튜토리얼 온라인으로 알고 있다면 내가 찾을 수 없습니다 그 : 내 단말기에이 얻을? 감사!
클래스 패스에 필요한 jar를 추가 했습니까? –