Bikas Saha created YARN-1026:
--------------------------------
Summary: Test and verify ACL based ZKRMStateStore fencing for RM
State Store
Key: YARN-1026
URL: https://issues.apache.org/jira/browse/YARN-1026
Project: Hadoop YARN
Issue Type: Sub-task
Reporter: Bikas Saha
ZooKeeper allows create/delete ACL's for immediate children of a znode. It also
has admin ACL's on a znode that allow changing the create/delete ACL's on that
znode. RM instances could share the admin ACL's on the state store root znode.
When an RM transitions to active, it can use the shared admin ACL's to give
itself exclusive create/delete permissions on the children of the root znode.
If all ZK state store operations are atomic and involve a create/delete znode
then the above effectively fences other RM instances from modifying the store.
This ACL change is only allowed when transitioning to active.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
