Windows中的Hadoop：找不到文件异常

Question

我在 windows 中使用 hadoop，并且我已经配置好一切（安装 cygwin、无密码 ssh 等）

我已经在 WC.jar 中编译了 wordcount 程序并尝试运行。它在独立模式下完美运行..但在完全分布式模式下它提供FileNotFoundException

请查看日志并告诉我有什么问题。 我已经在 MACH1 中启动了 dfs 和 mapreduce。 （那是我的主人）

$ bin/hadoop jar WC.jar WordCount words result

10/07/24 16:57:38 INFO input.FileInputFormat: Total input paths to process : 2
10/07/24 16:57:39 INFO mapred.JobClient: Running job: job_201007241657_0001
10/07/24 16:57:40 INFO mapred.JobClient:  map 0% reduce 0%
10/07/24 16:57:50 INFO mapred.JobClient: Task Id : attempt_201007241657_0001_m_0
00003_0, Status : FAILED
java.io.FileNotFoundException: File C:/tmp/hadoop-328510/mapred/local/taskTracke
r/jobcache/job_201007241657_0001/attempt_201007241657_0001_m_000003_0/work/tmp d
oes not exist.
        at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSys
tem.java:361)
        at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.
java:245)
        at org.apache.hadoop.mapred.TaskRunner.setupWorkDir(TaskRunner.java:519)

        at org.apache.hadoop.mapred.Child.main(Child.java:155)

10/07/24 16:57:55 INFO mapred.JobClient: Task Id : attempt_201007241657_0001_r_0
00002_0, Status : FAILED
java.io.FileNotFoundException: File C:/tmp/hadoop-328510/mapred/local/taskTracke
r/jobcache/job_201007241657_0001/attempt_201007241657_0001_r_000002_0/work/tmp d
oes not exist.
        at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSys
tem.java:361)
        at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.
java:245)
        at org.apache.hadoop.mapred.TaskRunner.setupWorkDir(TaskRunner.java:519)

        at org.apache.hadoop.mapred.Child.main(Child.java:155)

10/07/24 16:58:07 INFO mapred.JobClient: Task Id : attempt_201007241657_0001_m_0
00003_1, Status : FAILED
java.io.FileNotFoundException: File C:/tmp/hadoop-SYSTEM/mapred/local/taskTracke
r/jobcache/job_201007241657_0001/attempt_201007241657_0001_m_000003_1/work/tmp d
oes not exist.
        at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSys
tem.java:361)
        at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.
java:245)
        at org.apache.hadoop.mapred.TaskRunner.setupWorkDir(TaskRunner.java:519)

        at org.apache.hadoop.mapred.Child.main(Child.java:155)

10/07/24 16:58:14 INFO mapred.JobClient: Task Id : attempt_201007241657_0001_m_0
00003_2, Status : FAILED
java.io.FileNotFoundException: File C:/tmp/hadoop-SYSTEM/mapred/local/taskTracke
r/jobcache/job_201007241657_0001/attempt_201007241657_0001_m_000003_2/work/tmp d
oes not exist.
        at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSys
tem.java:361)
        at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.
java:245)
        at org.apache.hadoop.mapred.TaskRunner.setupWorkDir(TaskRunner.java:519)

        at org.apache.hadoop.mapred.Child.main(Child.java:155)

10/07/24 16:58:26 INFO mapred.JobClient: Task Id : attempt_201007241657_0001_m_0
00002_0, Status : FAILED
java.io.FileNotFoundException: File C:/tmp/hadoop-SYSTEM/mapred/local/taskTracke
r/jobcache/job_201007241657_0001/attempt_201007241657_0001_m_000002_0/work/tmp d
oes not exist.
        at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSys
tem.java:361)
        at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.
java:245)
        at org.apache.hadoop.mapred.TaskRunner.setupWorkDir(TaskRunner.java:519)

        at org.apache.hadoop.mapred.Child.main(Child.java:155)

10/07/24 16:58:34 INFO mapred.JobClient: Task Id : attempt_201007241657_0001_r_0
00001_0, Status : FAILED
java.io.FileNotFoundException: File C:/tmp/hadoop-SYSTEM/mapred/local/taskTracke
r/jobcache/job_201007241657_0001/attempt_201007241657_0001_r_000001_0/work/tmp d
oes not exist.
        at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSys
tem.java:361)
        at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.
java:245)
        at org.apache.hadoop.mapred.TaskRunner.setupWorkDir(TaskRunner.java:519)

        at org.apache.hadoop.mapred.Child.main(Child.java:155)

10/07/24 16:58:41 INFO mapred.JobClient: Task Id : attempt_201007241657_0001_m_0
00002_1, Status : FAILED
java.io.FileNotFoundException: File C:/tmp/hadoop-328510/mapred/local/taskTracke
r/jobcache/job_201007241657_0001/attempt_201007241657_0001_m_000002_1/work/tmp d
oes not exist.
        at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSys
tem.java:361)
        at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.
java:245)
        at org.apache.hadoop.mapred.TaskRunner.setupWorkDir(TaskRunner.java:519)

        at org.apache.hadoop.mapred.Child.main(Child.java:155)

10/07/24 16:58:47 INFO mapred.JobClient: Task Id : attempt_201007241657_0001_m_0
00002_2, Status : FAILED
java.io.FileNotFoundException: File C:/tmp/hadoop-328510/mapred/local/taskTracke
r/jobcache/job_201007241657_0001/attempt_201007241657_0001_m_000002_2/work/tmp d
oes not exist.
        at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSys
tem.java:361)
        at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.
java:245)
        at org.apache.hadoop.mapred.TaskRunner.setupWorkDir(TaskRunner.java:519)

        at org.apache.hadoop.mapred.Child.main(Child.java:155)

10/07/24 16:58:53 INFO mapred.JobClient: Job complete: job_201007241657_0001
10/07/24 16:58:53 INFO mapred.JobClient: Counters: 0

328510@01HW179531 /usr/local/hadoop-0.20.2
$`

谢谢。

Answer 1

我想我之前可能已经看到过这个异常，但我无法访问我的旧日志来确认它。我通过重新格式化namenode解决了我的FileNotFoundException。您可能需要在重新格式化之前检查名称节点日志中的“不一致状态”以确认原因。