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https://issues.apache.org/jira/browse/ACCUMULO-324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13682370#comment-13682370
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Christopher Tubbs commented on ACCUMULO-324:
--------------------------------------------
System-wide configuration should be added/merged with the default namespace
configuration, which won't apply to the system tables.
> System/site constraints and iterators should NOT affect the METADATA table
> --------------------------------------------------------------------------
>
> Key: ACCUMULO-324
> URL: https://issues.apache.org/jira/browse/ACCUMULO-324
> Project: Accumulo
> Issue Type: Sub-task
> Affects Versions: 1.4.0
> Reporter: John Vines
> Fix For: 1.6.0
>
>
> Currently any system and site wide constraints and iterators set will affect
> the !METADATA table. While we want to provide this level of configuration to
> make things easier for users, we also don't want to have this feature which
> is essentially useless due to ill effects on this critical table. We should
> make specific exceptions that any site/system-wide iterators, constraints,
> and other scan/write-time affecting configurations do not affect the
> !METADATA site. If we need an iterator/constraint running against the
> !METADATA table, it will have to be configured for it specifically.
> Do not fix until after ACCUMULO-323 has been resolved.
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