[GitHub] [accumulo] keith-turner opened a new pull request, #3673: Avoids full table scans in TabletGroupWatcher in some situations.

["keith-turner (via GitHub)" <gi...@apache.org>]

keith-turner opened a new pull request, #3673:
URL: https://github.com/apache/accumulo/pull/3673

   The manager has an internal class called EventCoordinator that is used to signal that something happened in the manager.  When anything signaled an event happened this would cause the tablet group watcher to scan the entire metadata table.  This commit makes a few changes to improve this.
   
   First it added the ability to EventCoordinator to signal with more specific information, like a something happened with a table or a tablet.
   
   Second the TabletGroupWatcher was adapted to react to this more specific signaling with narrower scans of the metadata table.  If a signal is made that something changed with a table, then only that tables metadata will be scanned.  The TabletGroupWatcher will still do full scans periodically (based on configuration) or when a something signals a full scan is needed.
   
   The functionality added in #3447 was moved into TabletGroupWatcher. When the TabletGroupWatcher is doing a full scan if more narrow events occur during the full scan then they will be processed without waiting for the fullscan to complete.


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[GitHub] [accumulo] keith-turner commented on pull request #3673: Avoids full table scans in TabletGroupWatcher in some situations.

["keith-turner (via GitHub)" <gi...@apache.org>]

keith-turner commented on PR #3673:
URL: https://github.com/apache/accumulo/pull/3673#issuecomment-1681551271

   Closing in favor of #3705 


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[GitHub] [accumulo] keith-turner closed pull request #3673: Avoids full table scans in TabletGroupWatcher in some situations.

["keith-turner (via GitHub)" <gi...@apache.org>]

keith-turner closed pull request #3673: Avoids full table scans in TabletGroupWatcher in some situations.
URL: https://github.com/apache/accumulo/pull/3673


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