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https://issues.apache.org/jira/browse/ACCUMULO-3890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14574878#comment-14574878
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Sean Busbey commented on ACCUMULO-3890:
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how do we figure out when things have changed? i.e. for those that are using
non-trivial credential providers where sensitive properties might be updated as
a part of a security incident, are we going to require a cluster restart?
> Use of CredentialProvider results in a lot of NN ops
> ----------------------------------------------------
>
> Key: ACCUMULO-3890
> URL: https://issues.apache.org/jira/browse/ACCUMULO-3890
> Project: Accumulo
> Issue Type: Bug
> Affects Versions: 1.6.1, 1.6.2, 1.7.0
> Reporter: Billie Rinaldi
> Assignee: Billie Rinaldi
> Fix For: 1.7.1, 1.8.0
>
>
> Every time we access a sensitive property or iterate over a configuration
> when there is a CredentialProvider configured, it results in NN operations
> (as evidenced by FSNamesystem.audit logs). I think that we could assume the
> CredentialProvider is static, read its properties once and cache them in
> memory to avoid these unnecessary reads.
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