Does Impala uses fair scheduler? and YARN for execution of query?

Question

Hi Friends,I have little doubt about Impala using fair schedulre for launching job. I am reading about Impala since 3 months but I never come across about Impala using fair scheduler instead it has its own mechanism for resource allocation. Is there any situation where Impala uses fair scheduler during execution of query?I have one more doubt about IMPALA using YARN. I want to the scenario/condition when we have to use YARN with IMPALA, becuase IMPALA has its own execution engine. When we have to use YARN with IMPALA? I think Llama is meant for that only.

Tim Armstrong · Accepted Answer

I think https://www.cloudera.com/documentation/enterprise/latest/topics/impala_admission.html#admission_yarn largely answers your question.

There's no supported YARN/Impala integration - they each manage their own resources separately. LLAMA was an integration point but it was deprecated and removed from Impala several years ago.

Sign up

Please use your Cloudera account.

Login to the community

Please use your Cloudera account.