druid server overload

Hi

I’m on druid 0.9.2

Our druid middleManager node is in overload status, 100% CPU Usage, 98% Memory Usage, Full Disk IO

it result to many query error and long response time

What can I to to make it high available ?

We have 3 middleManager available, but only 1 of them is overload

thanks

Assuming all your middle managers are well configured, switching to a equally distributed scheduling strategy will solve this.

Please read this http://druid.io/docs/latest/configuration/indexing-service.html#equal-distribution this config can be changed at runtime.