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Posted to dev@hbase.apache.org by "ryan rawson (JIRA)" <ji...@apache.org> on 2009/01/28 01:06:59 UTC
[jira] Commented: (HBASE-1160) Multi-site replication support
[ https://issues.apache.org/jira/browse/HBASE-1160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12667879#action_12667879 ]
ryan rawson commented on HBASE-1160:
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We'd probably want to avoid spanning a cluster across datacenter boundaries... it's too easy to get into irreconcilable network splits.
Replication as a site-to-site backup is a great approach. Multi-master replication would allow concurrent read/write when the link between the sites is down, but the internet connection is still available (very common scenario surprisingly).
I don't think we need a statistical 'eventual consistency' multi-write (Eg: paxos), but instead a straight forward replication stream (a la redo log replication from Oracle, mysql, etc) would be pretty good. Tools to monitor that replication stream (replicas are X seconds behind kind of thing) would also be necessary.
> Multi-site replication support
> ------------------------------
>
> Key: HBASE-1160
> URL: https://issues.apache.org/jira/browse/HBASE-1160
> Project: Hadoop HBase
> Issue Type: New Feature
> Reporter: Jean-Daniel Cryans
>
> HBase should support multi-site replication in order to provide higher availability. A first version with eventual consistency could be easy to implement.
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