我剛剛在小羣集上成功安裝了Hadoop。現在我試圖運行wordcount的例子,但我得到這個錯誤:運行Hadoop wordcount示例時未找到Job Token文件示例
****hdfs://localhost:54310/user/myname/test11
12/04/24 13:26:45 INFO input.FileInputFormat: Total input paths to process : 1
12/04/24 13:26:45 INFO mapred.JobClient: Running job: job_201204241257_0003
12/04/24 13:26:46 INFO mapred.JobClient: map 0% reduce 0%
12/04/24 13:26:50 INFO mapred.JobClient: Task Id : attempt_201204241257_0003_m_000002_0, Status : FAILED
Error initializing attempt_201204241257_0003_m_000002_0:
java.io.IOException: Exception reading file:/tmp/mapred/local/ttprivate/taskTracker/myname/jobcache/job_201204241257_0003/jobToken
at org.apache.hadoop.security.Credentials.readTokenStorageFile(Credentials.java:135)
at org.apache.hadoop.mapreduce.security.TokenCache.loadTokens(TokenCache.java:165)
at org.apache.hadoop.mapred.TaskTracker.initializeJob(TaskTracker.java:1179)
at org.apache.hadoop.mapred.TaskTracker.localizeJob(TaskTracker.java:1116)
at org.apache.hadoop.mapred.TaskTracker$5.run(TaskTracker.java:2404)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.io.FileNotFoundException: File file:/tmp/mapred/local/ttprivate/taskTracker/myname/jobcache/job_201204241257_0003/jobToken does not exist.
at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:397)
at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:251)
at org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.<init>(ChecksumFileSystem.java:125)
at org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:283)
at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:427)
at org.apache.hadoop.security.Credentials.readTokenStorageFile(Credentials.java:129)
... 5 more
任何幫助嗎?
是否路徑'的/ tmp/mapred/local'存在,並執行用戶在其下的Hadoop服務運行有權寫入這個目錄? – 2012-04-24 18:30:59
IIRC你必須製作該目錄或成爲具有這些權限的組中的用戶。否則,你會得到fnf – apesa 2012-04-24 21:50:59