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From "Michael Han (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ZOOKEEPER-3419) Backup and recovery support
Date Thu, 06 Jun 2019 22:32:00 GMT
Michael Han created ZOOKEEPER-3419:
--------------------------------------

             Summary: Backup and recovery support
                 Key: ZOOKEEPER-3419
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3419
             Project: ZooKeeper
          Issue Type: New Feature
          Components: server
    Affects Versions: 3.6.0
            Reporter: Michael Han
            Assignee: Michael Han


Historically ZooKeeper has no intrinsic support for backup and restore. The usual approach
of doing backup and restore is through customized scripts to copy data around, or through
some 3rd party tools (exhibitor, etc), which introduces operation burden. 

This Jira will introduce another option: a direct support of backup and restore from ZooKeeper
itself. It's completely built into ZooKeeper, support point in time recovery of an entire
tree rooted after an oops event, support recovery partial tree for test/dev purpose, and can
help replay history for bug investigation. It will try to provide a generic interface so the
backups can be directed to different data storage systems (S3, Kafka, HDFS, etc).

This same system has been in production at Twitter for X years and proved to be quite helpful
for various use cases mentioned earlier.



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