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Karthik Kambatla commented on YARN-1222: ---------------------------------------- bq. Where is the shared rm-admin-acl being set such that both RMs have admin access to the root znode? The shared rm-admin-acl comes from ZK_RM_STATE_STORE_ACL set by the user or default (world:anyone), if ZK_RM_STATE_STORE_ROOT_NODE_ACL is not set. If ZK_RM_STATE_STORE_ROOT_NODE_ACL is set by the user, it is the user's responsibility to set the ACLs in a way that both RMs have admin access and claim exclusive c-d access. Agree with rest of the points. Will address them in the next revision. > Make improvements in ZKRMStateStore for fencing > ----------------------------------------------- > > Key: YARN-1222 > URL: https://issues.apache.org/jira/browse/YARN-1222 > Project: Hadoop YARN > Issue Type: Sub-task > Reporter: Bikas Saha > Assignee: Karthik Kambatla > Attachments: yarn-1222-1.patch, yarn-1222-2.patch, yarn-1222-3.patch, > yarn-1222-4.patch > > > Using multi-operations for every ZK interaction. > In every operation, automatically creating/deleting a lock znode that is the > child of the root znode. This is to achieve fencing by modifying the > create/delete permissions on the root znode. -- This message was sent by Atlassian JIRA (v6.1#6144)