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https://issues.apache.org/jira/browse/ACCUMULO-3410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16117804#comment-16117804
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Christopher Tubbs commented on ACCUMULO-3410:
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Do you have a sense of how much this matters for performance? This seems like
something where the default is probably good enough, given the complexity which
would likely be required and the possible performance impact of actually
getting the hint (querying ZK).
> Hint the total number of tables during server start up.
> -------------------------------------------------------
>
> Key: ACCUMULO-3410
> URL: https://issues.apache.org/jira/browse/ACCUMULO-3410
> Project: Accumulo
> Issue Type: Improvement
> Components: master, tserver
> Reporter: Sean Busbey
> Priority: Trivial
>
> We have some internal caches that vary in size by the number of tables they
> see. We could be more efficient with them if we had an order-of-magnitude
> estimate at creation time, which is often on server start up.
> For now they default to unspecified, which on the jdks we're likely to be on
> is 16.
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