FSUtils.isInSafeMode() requires superuser privileges when HDFS permissions
checking enabled
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Key: HBASE-4680
URL: https://issues.apache.org/jira/browse/HBASE-4680
Project: HBase
Issue Type: Bug
Components: util
Affects Versions: 0.92.0
Reporter: Gary Helmling
Priority: Critical
Fix For: 0.92.0
The HDFS safe mode check workaround introduced by HBASE-4510 performs a
{{FileSystem.setPermission()}} operation on the root directory ("/") when
attempting to trigger a {{SafeModeException}}. As a result, it requires
superuser privileges when running with DFS permission checking enabled.
Changing the operations to act on the HBase root directory should be safe,
since the master process must have write access to it.
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