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https://issues.apache.org/jira/browse/HBASE-22578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16863020#comment-16863020
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Reid Chan commented on HBASE-22578:
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My question is why do you {{create empty directories for namespace and table}}
under archive directory, can't those stuff be in another specific directory?
like under /hbase/for_faster_scan_or_whatever.
> HFileCleaner should not delete empty ns/table directories used for user san
> snapshot feature
> --------------------------------------------------------------------------------------------
>
> Key: HBASE-22578
> URL: https://issues.apache.org/jira/browse/HBASE-22578
> Project: HBase
> Issue Type: Sub-task
> Reporter: Yi Mei
> Priority: Major
>
> HBASE-21995 add a coprocessor to set HDFS acls for HBase users who own HBase
> read permission to mask users have the ability to scan snapshot directly.
> It creates empty directories for namespace and table under archive directory
> and set HDFS acls to these directories after namespace or table is created,
> in this way, users can read files under archive directory.
> But the HFileCleaner will delete empty directories and this will break this
> feature. So if the user scan snapshot feature is enabled, HFileCleaner should
> not delete empty ns/table directories.
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