[HBASE-21838] Create a special ReplicationEndpoint just for verifying the WAL entries are fine

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1, 1.5.0, 2.2.0, 2.3.0
• Component/s: Replication, wal
• Labels: Replication
• Hadoop Flags: Reviewed

Release Note

Introduce a VerifyWALEntriesReplicationEndpoint which replicates nothing but only verifies if all the cells are valid.
It can be used to capture bugs for writing WAL, as most times we will not read the WALs again after writing it if there are no region server crashes.

• Assignee: Duo Zhang
• Reporter: Duo Zhang
• Created: 04/Feb/19 04:28
• Updated: 12/May/19 19:42
• Resolved: 06/Feb/19 10:31

Description

This is a missing part in our ITBLL. We can config a dummy replication endpoint which replicates nothing but only reads and verifies that all the wal files are readable and the entries are all fine.

With this I think it will be much easier to catch the problem in the parent issue.