question Re: impala dedicated co-ordinator and executor in Archives of Support Questions (Read Only)

impala dedicated co-ordinator and executor

kratka — Fri, 16 Sep 2022 13:34:36 GMT

Hi,

We have a 32 node impala cluster where each node is both an executor and a coordinator. We wanted to dedicate 6 nodes as co-ordinators and the rest as executors.

We created two config groups and set is_executor=false for coordinators and is_coordinator=false for executors and we restarted the impala service.

We deleted a table and tried to recreate it we got an error saying the table already exist.

We would like to know how to refresh the metadata on all the nodes.

Re: impala dedicated co-ordinator and executor

kratka — Mon, 13 Aug 2018 14:09:50 GMT

@Cloudera can anyone help us in this regard? thank you.

Re: impala dedicated co-ordinator and executor

nicusan — Mon, 13 Aug 2018 19:53:28 GMT

Did you try INVALIDATE METADATA?

https://www.cloudera.com/documentation/enterprise/5-14-x/topics/impala_invalidate_metadata.html

Nic

Re: impala dedicated co-ordinator and executor

kratka — Wed, 15 Aug 2018 14:14:37 GMT

thank you @nicusan will give it a try