[jira] [Moved] (SLIDER-174) HBase Master needs data locality

["Ted Yu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SLIDER-174?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ted Yu moved HADOOP-10751 to SLIDER-174:
----------------------------------------

    Workflow: jira  (was: no-reopen-closed, patch-avail)
         Key: SLIDER-174  (was: HADOOP-10751)
     Project: Slider  (was: Hadoop Common)

> HBase Master needs data locality
> --------------------------------
>
>                 Key: SLIDER-174
>                 URL: https://issues.apache.org/jira/browse/SLIDER-174
>             Project: Slider
>          Issue Type: Task
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>
> Currently:
> {code}
>     // Master doesn't need data locality
>     ROLES.add(new ProviderRole(HBaseKeys.ROLE_MASTER, KEY_MASTER,PlacementPolicy.NO_DATA_LOCALITY));
> {code}
> But in RoleHistory#findNodeForNewInstance():
> {code}
>     if (role.getNoDataLocality()) {
>       return null;
>     }
> {code}
> This implies that HBase master instances might be scheduled on one host, obviating the goal for HA.



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