keith-turner opened a new issue, #5154:
URL: https://github.com/apache/accumulo/issues/5154
In ee80c70 updated to remove entries in zoocache that have not
been accessed in 3 minutes. This also removes their watches. I think this
covers a lot of the issues of creating watches that hang around forever.
Looking into this I think the following follow on work could be done to improve
the watch situation.
* When something is removed from zoocache also remove the watch. Currently
when something is removed from zoocache explicitly its watch is just left
there.
* Only set a watch on things that are accesses more than once. I suspect
there are things in zoocache that are only accessed once and a watch is set.
These expire changes will help with this. We could reduce watches further in a
follow on by only setting them on the 2nd access.
_Originally posted by @keith-turner in
https://github.com/apache/accumulo/pull/5143#discussion_r1873997910_
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