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Posted to issues@hbase.apache.org by "Reid Chan (JIRA)" <ji...@apache.org> on 2019/06/13 12:37:00 UTC

[jira] [Commented] (HBASE-22578) HFileCleaner should not delete empty ns/table directories used for user san snapshot feature

    [ https://issues.apache.org/jira/browse/HBASE-22578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16863020#comment-16863020 ] 

Reid Chan commented on HBASE-22578:
-----------------------------------

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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