HBase Canary

    HBase  Canary 用于检测HBase 系统的状态。它对指定表的每一个region 抓取一行,来探测失败或者延迟。
    hbase org.apache.hadoop.hbase.tool.Canary -help
   
Usage: bin/hbase org.apache.hadoop.hbase.tool.Canary [opts] [table1 [table2]...] | [regionserver1 [regionserver2]..]
 where [opts] are:
   -help          Show this help and exit.
   -regionserver  replace the table argument to regionserver,
      which means to enable regionserver mode
   -daemon        Continuous check at defined intervals.
   -interval <N>  Interval between checks (sec)
   -e             Use region/regionserver as regular expression
      which means the region/regionserver is regular expression pattern
   -f <B>         stop whole program if first error occurs, default is true
   -t <N>         timeout for a check, default is 600000 (milisecs)

(1)检测每一个表的每一个region的每一个列簇。

    hbase  org.apache.hadoop.hbase.tool.Canary

(2)检测指定表的每一个region的每一个列簇,表之间用空格分开

    hbase orghapache.hadoop.hbase.tool.Canary test-01 test-02

(3)检测regionserver

     hbase orghapache.hadoop.hbase.tool.Canary  -regionserver

(4)正则表达式检测

      hbase orghapache.hadoop.hbase.tool.Canary  -e test-0[1-2]

 (5)以daemon模式运行

      hbase orghapache.hadoop.hbase.tool.Canary -daemon

      时间间隔为50000毫秒,出现错误不会停止

      hbase orghapache.hadoop.hbase.tool.Canary -daemon -interval 50000 -f false
(6)指定超时

     hbase orghapache.hadoop.hbase.tool.Canary -daemon  -t 6000000

原文地址:https://www.cnblogs.com/cl1024cl/p/6205114.html