加入收藏 | 设为首页 | 会员中心 | 我要投稿 李大同 （https://www.lidatong.com.cn/）- 科技、建站、经验、云计算、5G、大数据,站长网!
当前位置： 首页 > 综合聚焦 > 服务器 > Windows > 正文

windows-7 – Windows 7上的Hadoop单节点安装

发布时间：2020-12-14 05:40:54 所属栏目：Windows 来源：网络整理
导读：我是hadoop的新手,并试图在我的 Windows 7机器上获得Hadoop 0.20.2的单节点设置. 我的问题是双重的 – 一个是关于安装本身的完整性,另一个是关于示例字数统计程序的reduce阶段中的错误. 我的安装步骤如下： 我正在关注http://blog.benhall.me.uk/2011/01/ins
我是hadoop的新手,并试图在我的 Windows 7机器上获得Hadoop 0.20.2的单节点设置.

我的问题是双重的 – 一个是关于安装本身的完整性,另一个是关于示例字数统计程序的reduce阶段中的错误.

我的安装步骤如下：

我正在关注http://blog.benhall.me.uk/2011/01/installing-hadoop-0210-on-windows.html的安装程序.

我已经在我的localhost上安装了cygwin并设置了无密码的ssh
我的java版本是：

java version "1.7.0_02"
Java(TM) SE Runtime Environment (build 1.7.0_02-b13)
Java HotSpot(TM) 64-Bit Server VM (build 22.0-b10,mixed mode)

conf / core-site.xml的内容：

<configuration>
  <property>
    <name>fs.default.name</name>
    <value>hdfs://localhost:9000</value>
  </property>
</configuration>

conf / hdfs-site.xml的内容：

<configuration>
  <property>
    <name>dfs.replication</name>
    <value>1</value>
  </property>
</configuration>

conf / mapred-site.xml的内容：

<configuration>
  <property>
    <name>mapred.job.tracker</name>
    <value>localhost:9001</value>
  </property>
</configuration>

我设置了JAVA_HOME变量,命令“hadoop version”打印0.20.2
hadoop namenode -format创建没有任何错误的DFS

start-all.sh打印出namenode,secondarynamenode,datanode,jobtracker和tasktracker都已启动.

但是,命令“jps”打印：

$jps
4584 Jps
11008 JobTracker
2084 NameNode

我注意到jps打印了tasktracker,secondarynamenode的pids’.

我能够查看输出

http://localhost:50030 for the jobtracker,http://localhost:50060 for the tasktracker and 
http://localhost:50070 for the namenode.

我尝试了put和get命令到hdfs并且它们都成功了：

bin/hadoop fs -mkdir In
bin/hadoop fs -put *.txt In
mkdir temp
bin/hadoop fs -get In temp
ls -l temp/In
$ls -l temp/In/
total 365
348624 Mar 24 23:59 CHANGES.txt
13366 Mar 24 23:59 LICENSE.txt
101 Mar 24 23:59 NOTICE.txt
1366 Mar 24 23:59 README.txt

我也可以通过http接口浏览DFS来查看这些文件的namenode

>我的安装完成了吗？
>如果是,为什么jps命令不显示所有五个组件的pids？
>如果没有,那么,我需要完成安装的步骤是什么？
>用于测试安装完整性的其他健全性检查是什么？

我最初认为我的安装完成并运行了一个示例WordCount map-reduce程序,沿着http://jayant7k.blogspot.com/2010/06/writing-your-first-map-reduce-program.html行

我获得以下输出：

12/03/25 00:10:26 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
12/03/25 00:10:26 INFO input.FileInputFormat: Total input paths to process : 1
12/03/25 00:10:27 INFO mapred.JobClient: Running job: job_201203242348_0001
12/03/25 00:10:28 INFO mapred.JobClient:  map 0% reduce 0%
12/03/25 00:10:35 INFO mapred.JobClient:  map 100% reduce 0%
12/03/25 00:21:29 INFO mapred.JobClient: Task Id : attempt_201203242348_0001_r_0
00000_0,Status : FAILED
Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.
12/03/25 00:32:25 INFO mapred.JobClient: Task Id : attempt_201203242348_0001_r_0
00000_1,Status : FAILED
Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.
12/03/25 00:44:02 INFO mapred.JobClient: Task Id : attempt_201203242348_0001_r_0
00000_2,Status : FAILED
Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.
12/03/25 00:55:00 INFO mapred.JobClient: Job complete: job_201203242348_0001
12/03/25 00:55:00 INFO mapred.JobClient: Counters: 12
12/03/25 00:55:00 INFO mapred.JobClient:   Job Counters
12/03/25 00:55:00 INFO mapred.JobClient:     Launched reduce tasks=4
12/03/25 00:55:00 INFO mapred.JobClient:     Launched map tasks=1
12/03/25 00:55:00 INFO mapred.JobClient:     Data-local map tasks=1
12/03/25 00:55:00 INFO mapred.JobClient:     Failed reduce tasks=1
12/03/25 00:55:00 INFO mapred.JobClient:   FileSystemCounters
12/03/25 00:55:00 INFO mapred.JobClient:     HDFS_BYTES_READ=13366
12/03/25 00:55:00 INFO mapred.JobClient:     FILE_BYTES_WRITTEN=23511
12/03/25 00:55:00 INFO mapred.JobClient:   Map-Reduce Framework
12/03/25 00:55:00 INFO mapred.JobClient:     Combine output records=0
12/03/25 00:55:00 INFO mapred.JobClient:     Map input records=244
12/03/25 00:55:00 INFO mapred.JobClient:     Spilled Records=1887
12/03/25 00:55:00 INFO mapred.JobClient:     Map output bytes=19699
12/03/25 00:55:00 INFO mapred.JobClient:     Combine input records=0
12/03/25 00:55:00 INFO mapred.JobClient:     Map output records=1887

map任务似乎已完成,但reduce任务在日志中显示以下错误：

2012-03-25 00:10:35,202 INFO org.apache.hadoop.mapred.ReduceTask: attempt_201203242348_0001_r_000000_0: Got 1 new map-outputs
2012-03-25 00:10:40,193 INFO org.apache.hadoop.mapred.ReduceTask: attempt_201203242348_0001_r_000000_0 Scheduled 1 outputs (0 slow hosts and0 dup hosts)
2012-03-25 00:10:40,243 INFO org.apache.hadoop.mapred.ReduceTask: header: attempt_201203242348_0001_m_000000_0,compressed len: 23479,decompressed len: 23475
2012-03-25 00:10:40,243 INFO org.apache.hadoop.mapred.ReduceTask: Shuffling 23475 bytes (23479 raw bytes) into RAM from attempt_201203242348_0001_m_000000_0
2012-03-25 00:11:35,194 INFO org.apache.hadoop.mapred.ReduceTask: attempt_201203242348_0001_r_000000_0 Need another 1 map output(s) where 1 is already in progress
2012-03-25 00:11:35,194 INFO org.apache.hadoop.mapred.ReduceTask: attempt_201203242348_0001_r_000000_0 Scheduled 0 outputs (0 slow hosts and0 dup hosts)
2012-03-25 00:12:35,197 INFO org.apache.hadoop.mapred.ReduceTask: attempt_201203242348_0001_r_000000_0 Need another 1 map output(s) where 1 is already in progress
2012-03-25 00:12:35,197 INFO org.apache.hadoop.mapred.ReduceTask: attempt_201203242348_0001_r_000000_0 Scheduled 0 outputs (0 slow hosts and0 dup hosts)
2012-03-25 00:13:35,202 INFO org.apache.hadoop.mapred.ReduceTask: attempt_201203242348_0001_r_000000_0 Need another 1 map output(s) where 1 is already in progress
2012-03-25 00:13:35,202 INFO org.apache.hadoop.mapred.ReduceTask: attempt_201203242348_0001_r_000000_0 Scheduled 0 outputs (0 slow hosts and0 dup hosts)
2012-03-25 00:13:40,249 INFO org.apache.hadoop.mapred.ReduceTask: Failed to shuffle from attempt_201203242348_0001_m_000000_0
java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:150)
at java.net.SocketInputStream.read(SocketInputStream.java:121)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:275)
at java.io.BufferedInputStream.read(BufferedInputStream.java:334)
at sun.net.www.http.ChunkedInputStream.fastRead(ChunkedInputStream.java:239)
at sun.net.www.http.ChunkedInputStream.read(ChunkedInputStream.java:680)
at java.io.FilterInputStream.read(FilterInputStream.java:133)
at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(HttpURLConnection.java:2959)
at org.apache.hadoop.mapred.IFileInputStream.doRead(IFileInputStream.java:149)
at org.apache.hadoop.mapred.IFileInputStream.read(IFileInputStream.java:101)
at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.shuffleInMemory(ReduceTask.java:1522)
at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.getMapOutput(ReduceTask.java:1408)
at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.copyOutput(ReduceTask.java:1261)
at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.run(ReduceTask.java:1195)

以下是任务跟踪器日志的内容：

2012-03-25 00:10:27,910 INFO org.apache.hadoop.mapred.TaskTracker: LaunchTaskAction (registerTask): attempt_201203242348_0001_m_000002_0 task's state:UNASSIGNED
2012-03-25 00:10:27,915 INFO org.apache.hadoop.mapred.TaskTracker: Trying to launch : attempt_201203242348_0001_m_000002_0
2012-03-25 00:10:27,915 INFO org.apache.hadoop.mapred.TaskTracker: In TaskLauncher,current free slots : 2 and trying to launch attempt_201203242348_0001_m_000002_0
2012-03-25 00:10:28,453 INFO org.apache.hadoop.mapred.JvmManager: In JvmRunner constructed JVM ID: jvm_201203242348_0001_m_625085452
2012-03-25 00:10:28,454 INFO org.apache.hadoop.mapred.JvmManager: JVM Runner jvm_201203242348_0001_m_625085452 spawned.
2012-03-25 00:10:29,217 INFO org.apache.hadoop.mapred.TaskTracker: JVM with ID: jvm_201203242348_0001_m_625085452 given task: attempt_201203242348_0001_m_000002_0
2012-03-25 00:10:29,523 INFO org.apache.hadoop.mapred.TaskTracker: attempt_201203242348_0001_m_000002_0 0.0% setup
2012-03-25 00:10:29,524 INFO org.apache.hadoop.mapred.TaskTracker: Task attempt_201203242348_0001_m_000002_0 is done.
2012-03-25 00:10:29,524 INFO org.apache.hadoop.mapred.TaskTracker: reported output size for attempt_201203242348_0001_m_000002_0  was 0
2012-03-25 00:10:29,526 INFO org.apache.hadoop.mapred.TaskTracker: addFreeSlot : current free slots : 2
2012-03-25 00:10:29,718 INFO org.apache.hadoop.mapred.JvmManager: JVM : jvm_201203242348_0001_m_625085452 exited. Number of tasks it ran: 1
2012-03-25 00:10:30,911 INFO org.apache.hadoop.mapred.TaskTracker: org.apache.hadoop.util.DiskChecker$DiskErrorException: Could not find taskTracker/jobcache/job_201203242348_0001/attempt_201203242348_0001_m_000002_0/output/file.out in any of the configured local directories
2012-03-25 00:10:30,952 INFO org.apache.hadoop.mapred.TaskTracker: LaunchTaskAction (registerTask): attempt_201203242348_0001_m_000000_0 task's state:UNASSIGNED
2012-03-25 00:10:30,952 INFO org.apache.hadoop.mapred.TaskTracker: Trying to launch : attempt_201203242348_0001_m_000000_0
2012-03-25 00:10:30,952 INFO org.apache.hadoop.mapred.TaskTracker: In TaskLauncher,current free slots : 2 and trying to launch attempt_201203242348_0001_m_000000_0
2012-03-25 00:10:30,952 INFO org.apache.hadoop.mapred.TaskTracker: Received KillTaskAction for task: attempt_201203242348_0001_m_000002_0
2012-03-25 00:10:30,952 INFO org.apache.hadoop.mapred.TaskTracker: About to purge task: attempt_201203242348_0001_m_000002_0
2012-03-25 00:10:30,952 INFO org.apache.hadoop.mapred.TaskRunner: attempt_201203242348_0001_m_000002_0 done; removing files.
2012-03-25 00:10:30,952 INFO org.apache.hadoop.mapred.IndexCache: Map ID attempt_201203242348_0001_m_000002_0 not found in cache
2012-03-25 00:10:31,077 INFO org.apache.hadoop.mapred.JvmManager: In JvmRunner constructed JVM ID: jvm_201203242348_0001_m_-1399302881
2012-03-25 00:10:31,077 INFO org.apache.hadoop.mapred.JvmManager: JVM Runner jvm_201203242348_0001_m_-1399302881 spawned.
2012-03-25 00:10:31,812 INFO org.apache.hadoop.mapred.TaskTracker: JVM with ID: jvm_201203242348_0001_m_-1399302881 given task: attempt_201203242348_0001_m_000000_0
2012-03-25 00:10:32,642 INFO org.apache.hadoop.mapred.TaskTracker: attempt_201203242348_0001_m_000000_0 1.0% 
2012-03-25 00:10:32,642 INFO org.apache.hadoop.mapred.TaskTracker: Task attempt_201203242348_0001_m_000000_0 is done.
2012-03-25 00:10:32,642 INFO org.apache.hadoop.mapred.TaskTracker: reported output size for attempt_201203242348_0001_m_000000_0  was 0
2012-03-25 00:10:32,642 INFO org.apache.hadoop.mapred.TaskTracker: addFreeSlot : current free slots : 2
2012-03-25 00:10:32,822 INFO org.apache.hadoop.mapred.JvmManager: JVM : jvm_201203242348_0001_m_-1399302881 exited. Number of tasks it ran: 1
2012-03-25 00:10:33,982 INFO org.apache.hadoop.mapred.TaskTracker: LaunchTaskAction (registerTask): attempt_201203242348_0001_r_000000_0 task's state:UNASSIGNED
2012-03-25 00:10:33,982 INFO org.apache.hadoop.mapred.TaskTracker: Trying to launch : attempt_201203242348_0001_r_000000_0
2012-03-25 00:10:33,982 INFO org.apache.hadoop.mapred.TaskTracker: In TaskLauncher,current free slots : 2 and trying to launch attempt_201203242348_0001_r_000000_0
2012-03-25 00:10:34,057 INFO org.apache.hadoop.mapred.JvmManager: In JvmRunner constructed JVM ID: jvm_201203242348_0001_r_625085452
2012-03-25 00:10:34,057 INFO org.apache.hadoop.mapred.JvmManager: JVM Runner jvm_201203242348_0001_r_625085452 spawned.
2012-03-25 00:10:34,852 INFO org.apache.hadoop.mapred.TaskTracker: JVM with ID: jvm_201203242348_0001_r_625085452 given task: attempt_201203242348_0001_r_000000_0
2012-03-25 00:10:40,243 INFO org.apache.hadoop.mapred.TaskTracker: Sent out 23479 bytes for reduce: 0 from map: attempt_201203242348_0001_m_000000_0 given 23479/23475
2012-03-25 00:10:40,243 INFO org.apache.hadoop.mapred.TaskTracker.clienttrace: src: 192.168.1.33:50060,dest: 192.168.1.33:60790,bytes: 23479,op: MAPRED_SHUFFLE,cliID: attempt_201203242348_0001_m_000000_0
2012-03-25 00:10:41,153 INFO org.apache.hadoop.mapred.TaskTracker: attempt_201203242348_0001_r_000000_0 0.0% reduce > copy > 
2012-03-25 00:10:44,158 INFO org.apache.hadoop.mapred.TaskTracker: attempt_201203242348_0001_r_000000_0 0.0% reduce > copy > 
2012-03-25 00:16:05,244 INFO org.apache.hadoop.mapred.TaskTracker: Sent out 23479 bytes for reduce: 0 from map: attempt_201203242348_0001_m_000000_0 given 23479/23475
2012-03-25 00:16:05,244 INFO org.apache.hadoop.mapred.TaskTracker.clienttrace: src: 192.168.1.33:50060,dest: 192.168.1.33:60864,cliID: attempt_201203242348_0001_m_000000_0
2012-03-25 00:16:05,249 INFO org.apache.hadoop.mapred.TaskTracker: attempt_201203242348_0001_r_000000_0 0.0% reduce > copy > 
2012-03-25 00:16:08,249 INFO org.apache.hadoop.mapred.TaskTracker: attempt_201203242348_0001_r_000000_0 0.0% reduce > copy > 
2012-03-25 00:21:25,251 FATAL org.apache.hadoop.mapred.TaskTracker: Task: attempt_201203242348_0001_r_000000_0 - Killed due to Shuffle Failure: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.

我在Windows防火墙中打开了端口9000和9001
我检查了telnet输出以验证这些端口是否确实打开：

C:Windowssystem32>netstat -a -n | grep -e "500[367]0"
  TCP    0.0.0.0:50030          0.0.0.0:0              LISTENING
  TCP    0.0.0.0:50060          0.0.0.0:0              LISTENING
  TCP    0.0.0.0:50070          0.0.0.0:0              LISTENING
  TCP    [::]:50030             [::]:0                 LISTENING
  TCP    [::]:50060             [::]:0                 LISTENING
  TCP    [::]:50070             [::]:0                 LISTENING

C:Windowssystem32>netstat -a -n | grep -e "900[01]"
  TCP    127.0.0.1:9000         0.0.0.0:0              LISTENING
  TCP    127.0.0.1:9000         127.0.0.1:60332        ESTABLISHED
  TCP    127.0.0.1:9000         127.0.0.1:60987        ESTABLISHED
  TCP    127.0.0.1:9001         0.0.0.0:0              LISTENING
  TCP    127.0.0.1:9001         127.0.0.1:60410        ESTABLISHED
  TCP    127.0.0.1:60332        127.0.0.1:9000         ESTABLISHED
  TCP    127.0.0.1:60410        127.0.0.1:9001         ESTABLISHED
  TCP    127.0.0.1:60987        127.0.0.1:9000         ESTABLISHED

你能帮忙解决安装问题和减少任务的问题吗？

我在看

http://wiki.apache.org/hadoop/SocketTimeout

?和其他一些链接并尝试了建议,但没有任何成功.

感谢您耐心阅读本文,并很乐意提供更多详细信息.

提前致谢.

解决方法

在日志中查看此行： 

2012-03-25 00:10:30,911 INFO org.apache.hadoop.mapred.TaskTracker: org.apache.hadoop.util.DiskChecker$DiskErrorException: Could not find taskTracker/jobcache/job_201203242348_0001/attempt_201203242348_0001_m_000002_0/output/file.out in any of the configured local directories

我猜你需要检查hadoop.tmp.dir和mapred.local.dir.您提到了您正在使用的配置,因此这两个参数的值是默认值.这些参数的默认值为here.将它们设置到某个相关位置,然后重试.

注意：在您进行此更改之前,您需要停止hadoop并在完成后启动.

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!
    相关内容
      推荐文章
        站长推荐
        热点阅读

          【免责声明】本站内容转载自互联网，其发布内容言论不代表本站观点，如果其链接、内容的侵犯您的权益，烦请提交相关链接至邮箱bqsm@foxmail.com我们将及时予以处理。

          建议您使用1920×1080分辨率、谷歌浏览器Google Chrome、Microsoft Edge以获得本站的最佳浏览效果

          Copygight © 2008-2022 https://www.lidatong.com.cn/ All Rights Reserved. 李大同