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Posted to dev@oozie.apache.org by "Robert Kanter (JIRA)" <ji...@apache.org> on 2014/05/23 02:27:02 UTC

[jira] [Commented] (OOZIE-1854) Sharelib purging for HA

    [ https://issues.apache.org/jira/browse/OOZIE-1854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14006647#comment-14006647 ] 

Robert Kanter commented on OOZIE-1854:
--------------------------------------

Here's an idea I had:
Currently in ZK, when each server registers, they put up some metadata about themselves (the keys are in the {{ZKMetadataKeys}} class in {{ZKUtils}}).  Right now, this is just their ID and URL.  We could add which sharelib they are currently using to this metadata.  Then, when a server wants to purge a sharelib (and we don't have to restrict this to the first server anymore), they would check the metadata to make sure no other servers are still using that sharelib.  

> Sharelib purging for HA
> -----------------------
>
>                 Key: OOZIE-1854
>                 URL: https://issues.apache.org/jira/browse/OOZIE-1854
>             Project: Oozie
>          Issue Type: Bug
>          Components: HA
>            Reporter: Purshotam Shah
>




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