keith-turner opened a new issue, #4544: URL: https://github.com/apache/accumulo/issues/4544
The ScanServer has a [cache of tablet metadata](https://github.com/apache/accumulo/blob/5220f009ccf2816f195b103d8545707cd2b54793/server/tserver/src/main/java/org/apache/accumulo/tserver/ScanServer.java#L243) with an expire after write time. Whan a tablet is constantly being read from this cache, what happens when the expiration time arrives? Does it drop it cause a block read for the next cache use? Ideally items in the cache that were recently used could be reloaded in such a way that the expiration does not cause blocking for the reload, but not sure if this is possible w/ caffine. The first use of tablet should cause a blocking read on the cache, but if the tablet continues to be used frequently it would be nice if its refreshed in the background somehow w/o causing further blocking reads form the cache. -- 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]
