Question

ERROR org.apache.hadoop.mapred.TaskTracker: Can not start task tracker because java.io.IOException: Failed to set permissions of path: \tmp\hadoop-SYSTEM\mapred\local\taskTracker to 0755
    at org.apache.hadoop.fs.FileUtil.checkReturnValue(FileUtil.java:689)
    at org.apache.hadoop.fs.FileUtil.setPermission(FileUtil.java:670)
    at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:509)
    at org.apache.hadoop.fs.RawLocalFileSystem.mkdirs(RawLocalFileSystem.java:344)
    at org.apache.hadoop.fs.FilterFileSystem.mkdirs(FilterFileSystem.java:189)
    at org.apache.hadoop.mapred.TaskTracker.initialize(TaskTracker.java:723)
    at org.apache.hadoop.mapred.TaskTracker.<init>(TaskTracker.java:1459)
    at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:3742)
INFO org.apache.hadoop.mapred.TaskTracker: SHUTDOWN_MSG

Answer 1

将已用作配置文件中的值的目录的权限更改为755

需要帮助在具有IO异常的Hadoop-1.0.4中启动任务跟踪器。

1 个答案: