hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1222) Make improvements in ZKRMStateStore for fencing
Date Tue, 05 Nov 2013 18:35:18 GMT

    [ https://issues.apache.org/jira/browse/YARN-1222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13814102#comment-13814102
] 

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)

Mime
View raw message