impala dedicated co-ordinator and executor

[#1]

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.

[#2]

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

[#3 · Accepted solution]

Did you try INVALIDATE METADATA?

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

Nic

[#4]

thank you @nicusan will give it a try