hadoop/journal/ns: NameNode has clusterId ‘CID-b82’ but storage has clusterId ‘CID-657

2022-08-05 09:00:13 浏览数 (1)

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hadoop启动namenode日志报这个错,首先说怎么看日志,

启动namenode会有这个,ubuntu: starting namenode, logging to /home/xiaoye/hadoop/logs/hadoop-xiaoye-namenode-ubuntu.out

这是hadoop启动时会自动帮助写日志,并告诉我们日志的目录,我直接tail -200 /home/xiaoye/hadoop/logs/hadoop-xiaoye-namenode-ubuntu.out 看日志后200行,可是出现的结果是:

xiaoye@ubuntu:~$ tail -200 hadoop/logs/hadoop-xiaoye-namenode-ubuntu.out ulimit -a for user xiaoye core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 3645 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 3645 virtual memory (kbytes, -v) unlimited

file locks (-x) unlimited

应该不是这个日志啊,看着不对劲。

于是改成 tail -200 hadoop/logs/hadoop-xiaoye-namenode-ubuntu.log

这个命令,就可以看到出现这个错,NameNode has nsId 229502726 but storage has nsId 695608861

解决办法:原因分析:

是多次格式化namenode导致版本不一致,直接的办法是直接删掉hadoop/hadoop/目录下的data和name目录下的所有文件,然后重新格式化,重新启动。但是这样明显是不提倡的。

这里解决办法是改文件的内容,根据提示,把/hadoop/hadoop/name/current目录下的VERSION文件的namespaceID修改成报错信息中storage的id值。

xiaoye@ubuntu:~ cd hadoop/hadoop/name/currentxiaoye@ubuntu:~/hadoop/hadoop/name/current lsedits_0000000000000000001-0000000000000000001 fsimage_0000000000000000000.md5edits_inprogress_0000000000000000002 seen_txidfsimage_0000000000000000000 VERSIONxiaoye@ubuntu:~/hadoop/hadoop/name/current vim VERSION xiaoye@ubuntu:~/hadoop/hadoop/name/current

#Fri Mar 30 00:14:41 PDT 2018 namespaceID=695608861 clusterID=CID-657e9540-2de9-43a2-bf91-199a4334b05a cTime=0 storageType=NAME_NODE blockpoolID=BP-583631310-127.0.1.1-1522394081528 layoutVersion=-59 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

“VERSION” 7L, 200C

在重新启动namenode

./hadoop/sbin/hadoop-daemons.sh start namenode

这时namenode还是没有启动成功,与是重复上面步骤,日志出现新的错误。

home/xiaoye/hadoop/journal/ns: NameNode has clusterId ‘CID-b824b399-e941-4982-a618-745373

9d3d55′ but storage has clusterId ‘CID-657e9540-2de9-43a2-bf91-199a4334b05a’

于是还是修改上面的VERSION文件,把clusterId的值改成 storage的值,即可。

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