Hadoop namenode无法启动问题解决

首先运行bin/start-all.sh发现namenode没有启动

只有它们

9428 DataNode

9712 JobTracker

9626 SecondaryNameNode

9983 Jps

9915 TaskTracker

遇到问题要学会翻看日志

cd /usr/local/hadoop/logs

发现日志下面有这个文件

hadoop-hadoop-namenode-ubuntu.log.2014-07-29

用vim打开，只要看err出错部分如下

2014-07-29 02:30:22,388 ERRORorg.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesysteminitialization failed.

java.io.FileNotFoundException: /usr/local/hadoop/hdfs/name/in_use.lock(Permission denied)

atjava.io.RandomAccessFile.open(Native Method)

atjava.io.RandomAccessFile.<init>(RandomAccessFile.java:236)

atorg.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.tryLock(Storage.java:617)

atorg.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.lock(Storage.java:594)

atorg.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.analyzeStorage(Storage.java:452)

atorg.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:299)

atorg.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:104)

atorg.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:427)

atorg.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:395)

是我上次用root操作hadoop所致的

更改权限即可,改成hadoop所有

chown -R hadoop:hadoop /usr/local/hadoop/hdfs/*

chown -R hadoop:hadoop /usr/local/hadoop/logs（日志文件也要改）

先bin/stop-all.sh

再bin/start-all.sh

Namenode就又正常启动了

posted @ 2014-07-30 11:07 unflynaomi 阅读(24601) 评论(0) 编辑收藏举报

unflynaomi