Rushabh S Shah created HADOOP-15381:
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Summary: KmsAcls should be reloaded periodically.
Key: HADOOP-15381
URL: https://issues.apache.org/jira/browse/HADOOP-15381
Project: Hadoop Common
Issue Type: Bug
Components: kms
Reporter: Rushabh S Shah
Assignee: Rushabh S Shah
Currently {{KMSACLs}} is getting reloaded depending on whether {{kms-acls}}
file is modified or not.
Since the access control is specified by {{AcccessControlList}}, the member may
contain {{unix-group}} or {{net-group}}.
If we add a new user to any group, technically the file is not modified but the
membership of a group is modified, so we need to reload the {{kms-acls}} file.
There are couple of solutions for this.
1. short-term solution: Reload the file periodically (like lets say every 15
minutes).
2. long-term solution: Implement a {{refreshUserGroupMapping}} like
protocol/servlet so whenever we change membership we can invoke that protocol
and we get the updates.
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