[YARN-7652] Handle AM register requests asynchronously in FederationInterceptor

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.9.0, 3.0.0
• Fix Version/s: 2.10.0, 3.3.0
• Component/s: amrmproxy, federation
• Target Version/s: 2.9.2
• Hadoop Flags: Reviewed
• Assignee: Botong Huang
• Reporter: Subramaniam Krishnan
• Created: 13/Dec/17 20:08
• Updated: 24/Jul/19 01:58
• Resolved: 09/Oct/18 17:32

Description

We (cc goiri/botong) observed that the FederationInterceptor in AMRMProxy (and consequently the AM) is blocked if the StateStore has outdated info about a SubCluster. This is because we handle AM register requests synchronously. This jira proposes to move to async similar to how we operate with allocate invocations.

Issue Links

• relates to: YARN-8855 Application fails if one of the sublcluster is down.