[HBASE-25145] WALReader quits if nothing to replicate (and won't restart)

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Assignee: Unassigned
• Reporter: Michael Stack
• Created: 02/Oct/20 03:25
• Updated: 17/Jun/22 04:50
• Resolved: 05/Oct/20 18:23

Description

Noticed by huaxiangsun in his review of HBASE-25055 "Add ReplicationSource for meta WALs; add enable/disable w…"

 Eventually, the meta wal file will be gced and there is no more logs in the queue. In that case, the walReader thread will quit. When the meta region is moved back, it does not seem that walReader thread will be restarted. So it seems that something is broken.

This issue is about writing a test to run the above scenario and fix any probs. found.