[GitHub] [accumulo] dlmarion commented on pull request #3200: Created TabletMetadataCache

["dlmarion (via GitHub)" <gi...@apache.org>]

dlmarion commented on PR #3200:
URL: https://github.com/apache/accumulo/pull/3200#issuecomment-1440225987

   > Did you happen to check how many additional watchers this will add?
   
   Did you mean the persistent recursive watch? I'm assuming that it will be one per TabletMetadataCache (where and where it's used). I have not seen anything that says a recursive watch adds a watcher to each child node. I did consider the impact of watches. I was thinking of introducing `etcd` for this very reason, but I didn't think that it would be well received as it would add an additional runtime dependency. IIRC etcd watches are tied to the client connection, so when the connection is closed, the watches are gone.


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