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Posted to notifications@accumulo.apache.org by GitBox <gi...@apache.org> on 2019/06/20 00:55:10 UTC

[GitHub] [accumulo] ctubbsii opened a new issue #1225: Use fewer ZooKeeper watchers

ctubbsii opened a new issue #1225: Use fewer ZooKeeper watchers
URL: https://github.com/apache/accumulo/issues/1225
 
 
   Currently, we use an excessive number of ZooKeeper watchers
   Some watchers could be cleaned up by doing #1220 , but there's also room for simply using less of them.
   
   One possible solution is instead of having a watcher for every configuration item, we have only a single configuration version field in ZooKeeper for all configuration items, and a single watcher (per process) to track that version field and reload all configurations whenever it is changed. This would require us to ensure that we increment this field whenever a configuration is changed.
   
   Other related issues:
   
   * https://issues.apache.org/jira/browse/ACCUMULO-2348
   * https://issues.apache.org/jira/browse/ACCUMULO-3842
   * https://issues.apache.org/jira/browse/ACCUMULO-419

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