Hadoop僞分佈配置錯誤總結
小編在進行hadoop學習過程中，在對hadoop的僞分佈進行配置時，對兩個配置文件進行了修改。一個是core-site.xml和hdfs-site.xml。
配置後運行出現了以下錯誤：
17/03/13 04:20:36 ERROR namenode.NameNode: Failed to start namenode.
java.lang.IllegalArgumentException: URI has an authority component
at java.io.File.<init>(File.java:423)
at org.apache.hadoop.hdfs.server.namenode.NNStorage.getStorageDirectory(NNStorage.java:329)
at org.apache.hadoop.hdfs.server.namenode.FSEditLog.initJournals(FSEditLog.java:276)
at org.apache.hadoop.hdfs.server.namenode.FSEditLog.initJournalsForWrite(FSEditLog.java:247)
at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:986)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1434)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1559)
17/03/13 04:20:36 INFO util.ExitUtil: Exiting with status 1
17/03/13 04:20:36 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at ubuntu/127.0.1.1
************************************************************/
錯誤發生的原因是配置文件寫錯了，配置文件中不要加file:
core-site.xml內容如下：
hdfs-site.xml內容如下：
重新運行啓動即可。
17/03/13 04:33:37 INFO common.Storage: Storage directory /usr/local/hadoop/tmp/dfs/name has been successfully formatted.
17/03/13 04:33:37 INFO namenode.FSImageFormatProtobuf: Saving image file /usr/local/hadoop/tmp/dfs/name/current/fsimage.ckpt_0000000000000000000 using no compression
17/03/13 04:33:37 INFO namenode.FSImageFormatProtobuf: Image file /usr/local/hadoop/tmp/dfs/name/current/fsimage.ckpt_0000000000000000000 of size 353 bytes saved in 0 seconds.
17/03/13 04:33:37 INFO namenode.NNStorageRetentionManager: Going to retain 1 images with txid >= 0
17/03/13 04:33:37 INFO util.ExitUtil: Exiting with status 0
17/03/13 04:33:37 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at ubuntu/127.0.1.1
************************************************************/