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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-378) Multi data center replication
Date Thu, 29 May 2014 01:02:30 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14011911#comment-14011911
] 

ASF subversion and git services commented on ACCUMULO-378:
----------------------------------------------------------

Commit 49fc9855f996ae0f5b3cc20e03e77ea8f707d640 in accumulo's branch refs/heads/ACCUMULO-378
from [~elserj]
[ https://git-wip-us.apache.org/repos/asf?p=accumulo.git;h=49fc985 ]

ACCUMULO-378 Can't use '_' as the row separator for Order records.

The ULongLexicoder *might* create bytes that actually equal the '_', which
will mess up the splitting logic of the row key. Switch it to a \x00 instead
and find the last instance of it.


> Multi data center replication
> -----------------------------
>
>                 Key: ACCUMULO-378
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-378
>             Project: Accumulo
>          Issue Type: New Feature
>          Components: replication
>            Reporter: Sapan Shah
>            Assignee: Josh Elser
>            Priority: Minor
>             Fix For: 1.7.0
>
>
> The use case here is where people have multiple data centers and need to replicate the
data in between them.  Accumulo can model this replication after the way that HBase currently
handles the replication as detailed here (http://hbase.apache.org/replication.html).  
> There will be one master Cluster and multiple slave clusters.  Accumulo will use the
Master-Push model to replicate the statements from the master clusters WAL to the various
slaves WALs.



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