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https://issues.apache.org/jira/browse/KUDU-1982?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon reassigned KUDU-1982:
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Assignee: Pavel Martynov
> Java client calls NetworkInterface.getByInetAddress too often
> -------------------------------------------------------------
>
> Key: KUDU-1982
> URL: https://issues.apache.org/jira/browse/KUDU-1982
> Project: Kudu
> Issue Type: Bug
> Components: client, java, perf
> Affects Versions: 1.1.0, 1.2.0, 1.3.0
> Reporter: Todd Lipcon
> Assignee: Pavel Martynov
> Priority: Critical
> Fix For: 1.4.0
>
>
> Pavel Martynov found that the performance of the Java client on his Windows
> system regressed ~20x between 1.0.1 and 1.1.0 due to frequent calls to
> NetworkInterface.getByInetAddress. This function is apparently very slow on
> Windows. We are currently computing this unnecessarily in many places, and
> even when we do need it, we could probably cache the set of local IPs.
> It's not clear that this is as problematic on Linux, but looking at the
> source, it's also not entirely light-weight either.
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