Yi Mei created HBASE-22578:
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Summary: 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
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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