[CASSANDRA-15404] Hint directory error affect cassandra process

• Type: Improvement
• Status: In Progress
• Priority: Normal
• Resolution: Unresolved
• Fix Version/s: 5.x
• Component/s: Local/Config, Local/Other
• Change Category: Operability
• Complexity: Normal
• Platform: All
• Assignee: Maxwell Guo
• Reporter: Maxwell Guo

Authors

Maxwell Guo

• Created: 07/Nov/19 11:26
• Updated: 07/Mar/23 10:54

Description

I use the default config to do some test. I delete all hint directory by mistake，but my cassandra process at last stoped .Latter I found that that is because the hint directory use the data disk policy .

In our production cluster , hint and cache's dir are set separately and are not the same with data dir . And we know that cassandra can use multi data directory to store data, the hint's data operation should not affect the data and commitlog 's read or write . Also
hint/cache 's data loss do not affect the cassandra's correct read .

so I think hint's disk_faily_policy should be separately. So we can got three type of
disk faily policy for : data disk , commitlog disk and hint disk 。

I don't know if my suggestion is meaningful. If it is, I would like to take over the issue。I'm also happy to receive new suggestions.

I thinks this is a bug , but now I can not modify the Type of the issue . The situation is easy to reproduce .The data disk policy use stop . every time you delete the hint directory will cause the daemon's stop.Stop NativeTransport server and gossip .