[RATIS-569] StatusRuntimeException because Ratis clients do not shutdown the observer cleanly

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.3.0
• Fix Version/s: 0.5.0
• Component/s: server
• Labels: ozone
• Target Version/s: 0.4.0
• Assignee: Siddharth Wagle
• Reporter: Mukul Kumar Singh
• Created: 24/May/19 18:26
• Updated: 14/Sep/19 04:51
• Resolved: 14/Sep/19 04:51

Description

Running TestDataValidate in Ozone leads to StatusRuntimeException on the datanode frequently.
This causes an unclean shutdown on the stream on the datanode.

In GrpcClientProtocolClient, shutdownNow should be followed by a awaitTermination to wait for a clean shutdown.