Generic framework for Master-coordinated tasks
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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
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
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