Hadoop namenode没起_warn org.apache.hadoop.hdfs.server.namenode.fsname-优快云博客

博客主要围绕Hadoop中namenode未启动的问题展开。通过查看namenode日志进行分析，发现问题原因一是未格式化namenode，二是删除了tmp文件。解决方案是再次格式化namenode，使用命令hadoop namenode -format。

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问题描述：

namenode 没起来
查看log下namenode 日志

WARN org.apache.hadoop.hdfs.server.common.Storage: Storage directory /usr/local/src/hadoop/tmp/dfs/name does not exist

WARN org.apache.hadoop.hdfs.server.common.Storage: Storage directory /usr/local/src/hadoop/tmp/dfs/name does not exist
2020-12-18 21:00:36,171 WARN org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Encountered exception loading fsimage
org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /usr/local/src/hadoop/tmp/dfs/name is in an inconsistent state: storage directory does not exist or is not accessible.
	at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverStorageDirs(FSImage.java:313)
	at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:202)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1020)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:739)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:536)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:595)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:762)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:746)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1438)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1504)