[HBASE-27902] New async admin api to invoke coproc on multiple servers

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.6.0, 2.4.18, 2.5.6, 3.0.0-beta-1
• Hadoop Flags: Reviewed
• Assignee: Jing Yu
• Reporter: Viraj Jasani
• Created: 02/Jun/23 04:58
• Updated: 22/Jun/23 06:37
• Resolved: 20/Jun/23 22:08

Description

We can execute regionserver coproc on a given regionserver using:

<S, R> CompletableFuture<R> coprocessorService(Function<RpcChannel, S> stubMaker,
  ServiceCaller<S, R> callable, ServerName serverName); 

We should also provide an api at admin layer that can invoke the given coproc endpoint on multiple servers, to help execute the given function in parallel across the entire cluster.

Issue Links

• Dependent: PHOENIX-6968 Create PhoenixRegionServerEndpoint#invalidateCache method to invalidate cache.
• links to: GitHub Pull Request #5266
• links to: GitHub Pull Request #5295