org.apache.hadoop.conf.Configuration.getLocalpath(配置)中的 java.lang.NullPointerException

Question

有没有人遇到过这个问题？

The following are the error information when I run the job:
13/01/10 15:53:19 INFO mapred.JobClient: Task Id : attempt_201301101540_0001_m_000010_0, Status : FAILED
java.lang.NullPointerException
    at org.apache.hadoop.conf.Configuration.getLocalPath(Configuration.java:934)
    at nfs.iscas.sil.hcir.index.ImageIndexWriter.<init>(Unknown Source)
    at nfs.iscas.sil.hcir.index.ImageIndexOutputFormat.getRecordWriter(Unknown Source)
    at org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector.<init>(MapTask.java:627)
    at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:752)
    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:369)
    at org.apache.hadoop.mapred.Child$4.run(Child.java:259)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:396)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1059)
    at org.apache.hadoop.mapred.Child.main(Child.java:253)

Answer 1

我认为问题出在您的路径上。

file file-path 要添加的资源，直接检查本地文件系统来查找资源，而不引用类路径。