hbase开启ttl后每个小时的20和50分钟都会有hbase健康报警

• yesteday after we turn the big table TTL on, it have a big storage usage down
  

• openfalcon disk monitor show the disk io is high at the unhealthy time range
  

• hbase region log show the time that unhealty with log warnings
  

• CDH diagnostic page show hbase healthy not normal
  

• check the hbase storage which data time range it has
  

• aws monitor shows that disk read not normal after we turn ttl on
  

• just raise the number threshold