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List: hadoop-dev
Subject: [jira] [Created] (HADOOP-10751) HBase Master needs data locality
From: "Ted Yu (JIRA)" <jira () apache ! org>
Date: 2014-06-26 2:20:24
Message-ID: JIRA.12723794.1403749136596.51471.1403749224401 () arcas
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Ted Yu created HADOOP-10751:
-------------------------------
Summary: HBase Master needs data locality
Key: HADOOP-10751
URL: https://issues.apache.org/jira/browse/HADOOP-10751
Project: Hadoop Common
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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