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      kudu-master服务启动失败

      执行service kudu-master start ,  提示启动失败failed。

      进入报错日志目录  (cd /var/log/kudu/),看到报错信息(vim kudu-master.ERROR 或 vim kudu-master.FATAL)如下:

      Log file created at: 2019/10/23 19:04:52
      Running on machine: cdh01.itcast.cn
      Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg
      F1023 19:04:52.290035 6258 master_main.cc:74] Check failed: _s.ok() Bad status: IO e
      rror: Failed to load FS layout: could not load /var/lib/kudu/master/data/block_manage
      r_instance: existing data was written using the ‘log‘ block manager; cannot restart w
      ith a different block manager ‘file‘ without reformatting

      解决步骤:

      1. cd /var/lib/kudu/master/data 

      mv block_manager_instance block_manager_instance_bak

      然后再次执行service kudu-master start,报以下错误:

      Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg

      F1023 19:18:49.135205 6374 master_main.cc:74] Check failed: _s.ok() Bad status: Alre
      ady present: FS layout already exists; not overwriting existing layout. See https://k
      udu.apache.org/releases/1.7.0-cdh5.16.1/docs/troubleshooting.html: unable to create f
      ile system roots: FSManager roots already exist: /var/lib/kudu/master

       

      2. cd /var/lib/kudu/  

      mv master master_bak

      然后再次执行service kudu-master start,可以正常启动了。

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