[ https://issues.apache.org/jira/browse/HBASE-5487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13797511#comment-13797511 ]
Sergey Shelukhin commented on HBASE-5487: ----------------------------------------- AssignmentManager, a class in HBase master. Often but not always, when talking about it people also imply bunch of auxiliary classes around it like ServerShutdownHandler, RegionClosed/OpenedHandler, ZKTable, etc. Which together implement region assignment in HBase > Generic framework for Master-coordinated tasks > ---------------------------------------------- > > Key: HBASE-5487 > URL: https://issues.apache.org/jira/browse/HBASE-5487 > Project: HBase > Issue Type: New Feature > Components: master, regionserver, Zookeeper > Affects Versions: 0.94.0 > Reporter: Mubarak Seyed > Assignee: Sergey Shelukhin > Priority: Critical > Attachments: Entity management in Master - part 1.pdf, Region > management in Master5.docx, Region management in Master.pdf > > > Need a framework to execute master-coordinated tasks in a fault-tolerant > manner. > Master-coordinated tasks such as online-scheme change and delete-range > (deleting region(s) based on start/end key) can make use of this framework. > The advantages of framework are > 1. Eliminate repeated code in Master, ZooKeeper tracker and Region-server for > master-coordinated tasks > 2. Ability to abstract the common functions across Master -> ZK and RS -> ZK > 3. Easy to plugin new master-coordinated tasks without adding code to core > components -- This message was sent by Atlassian JIRA (v6.1#6144)