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From "Esteban Gutierrez (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12947) Replicating DDL statements like create from one cluster to another
Date Mon, 08 Aug 2016 23:33:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15412646#comment-15412646

Esteban Gutierrez commented on HBASE-12947:

I ran across this recently and I concur with [~apurtell] on the the challenges. For instance,
sometimes you would like to have the tables in the sink cluster using a different compression
codec or a larger TTL than the source or depending on the namespace the users on the remote
cluster might have some restriction on the use of coprocessors. I think tooling like {{bin/replication/copy_tables_desc.rb}}
is ok for basic management, but for fine grain control we should revisit this as part of HBASE-14379.

> Replicating DDL statements like create  from one cluster to another
> -------------------------------------------------------------------
>                 Key: HBASE-12947
>                 URL: https://issues.apache.org/jira/browse/HBASE-12947
>             Project: HBase
>          Issue Type: New Feature
>          Components: Replication
>    Affects Versions: 2.0.0
>            Reporter: Prabhu Joseph
>            Priority: Critical
>             Fix For: 2.0.0
> Problem:
>       When tables are created dynamically in Hbase cluster, the Replication feature can't
be used as the new table does not exist in peer cluster. To use the replication, we need to
create same table in peer cluster also.
>    Having API to replicate the create table statement at peer cluster will be more helpful
in such cases.
> Solution:
>     create 'table','cf',replication => true , peerFlag => true
>     if peerFlag = true, the table with the column family has to be created at peer
> cluster.
>    Special cases like enabling replication at peer cluster also for cyclic replication
has to be considered.

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