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Explorer
Posts: 116
Registered: ‎09-14-2016
Accepted Solution

impala java heap config

HI,

 

In impala config, i am setting mem limit to 24G, there is also a java heap size, i dont know if this is used by impala queries? and whats the relation with mem limit, and what should i set, if i have physical say 32G, how big can i set on java heap?

 

Thanks

Shannon

Champion
Posts: 595
Registered: ‎05-16-2016

Re: impala java heap config

The best practice is to set 8 gb aside  for the os and remaining for the dameons .

Are you refering to JAVA_TOOL_OPTIONS property . 

I would start with 8G bump it when hit outofMemory during intial setup . 

Explorer
Posts: 116
Registered: ‎09-14-2016

Re: impala java heap config

Java Heap Size of Catalog Server in Bytes - i set to 4G

 

Java Heap Size of Impala Llama ApplicationMaster in Bytes  - does this have anything to do with impala query?

Cloudera Employee
Posts: 275
Registered: ‎07-29-2015

Re: impala java heap config

Llama is deprecated and shouldn't be in use - you should be safe to ignore that option.

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