Julian Reschke created OAK-7935:
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Summary: RDB*Store: createOrUpdate may fail on stale cache
Key: OAK-7935
URL: https://issues.apache.org/jira/browse/OAK-7935
Project: Jackrabbit Oak
Issue Type: Technical task
Components: rdbmk
Affects Versions: 1.8.9, 1.6.15
Reporter: Julian Reschke
Assignee: Julian Reschke
When executing `createOrUpdate()` on a node that is cached but has been removed
from the database (by a different instance), the operation will fail, and
continue to do so until the cache entry gets evicted or the cache gets manually
cleared.
The exception message somewhat misleadingly says "update of ... failed, race
condition?"
The problem has been fixed already in OAK-7725, but that change is rather big
and non-trivial to backport.
As a simpler fix for the maintenance branches we should invalidate the cache
when the update fails, so that the system at least recovers and a retry will
work.
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