[HBASE-27641] Verify replication reporting excessive BADROWS

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: mapreduce, Replication
• Assignee: Hernan Gelaf-Romer
• Reporter: Hernan Gelaf-Romer
• Created: 14/Feb/23 22:47
• Updated: 14/Feb/23 23:17

Description

Verify replication can generate a lot of `BADROWS` results when comparing a row that may be particularly hot at the time of re-compare. This can lead to a mismatch between the source and sink result due to replication lag. 

We could add some configurable re-compare mechanism that will make verify replication less susceptible to falsely reporting `BADROWS` when under significant write load. These re-compares can be done asynchronously so as to not significantly slow down the execution time of the job.