gavinchou commented on PR #64167: URL: https://github.com/apache/doris/pull/64167#issuecomment-4849869056
Possible NPE in `TabletScheduler` when a replica references a dropped backend. The new exclude-tag check dereferences `be.getLocationTag()` immediately after `infoService.getBackend(beId)`. If a replica still references a backend that has already been dropped, `getBackend(beId)` can return null, and the scheduler will throw before it can skip or handle that replica. Relevant code: https://github.com/apache/doris/blob/cde59482ce5a548a2652c3aead57096a9c832f22/fe/fe-core/src/main/java/org/apache/doris/clone/TabletScheduler.java#L817-L823 Can we add a null check before reading `be.getLocationTag()` and add a small scheduler test for a replica on a dropped backend? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
