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https://issues.apache.org/jira/browse/HBASE-8663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13740217#comment-13740217
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Demai Ni commented on HBASE-8663:
---------------------------------
folks, many thanks for the help on this JIRA. per our discussion, I created a
follow up jira HBASE-9220 for the replicated tables on slave side, well, the
tricky one.
> a HBase Shell command to list the tables replicated from current cluster
> ------------------------------------------------------------------------
>
> Key: HBASE-8663
> URL: https://issues.apache.org/jira/browse/HBASE-8663
> Project: HBase
> Issue Type: New Feature
> Components: Replication, shell
> Environment: clusters setup as Master and Slave for replication of
> tables
> Reporter: Demai Ni
> Assignee: Demai Ni
> Priority: Critical
> Fix For: 0.98.0, 0.95.2, 0.94.11
>
> Attachments: HBASE-8663-0.94.9-v0.patch, HBASE-8663.PATCH,
> HBASE-8663-trunk-v0.patch, HBASE-8663-trunk-v1.patch,
> HBASE-8663-trunk-v2.patch, HBASE-8663-trunk-v3.patch,
> HBASE-8663-trunk-v4.patch, HBASE-8663-trunk-v5.patch, HBASE-8663-v2.PATCH
>
>
> Thanks for the discussion and very good suggestions,I'd reduce the scope of
> this jira to only display the tables replicated from current cluster. Since
> currently no good(accurate and consistent) way to flag a table on slave
> cluster, this jira will not cover such scenario. Instead, the patch will be
> flexible enough to adapt such scenario and a follow up JIRA will be opened to
> address such situation.
> The shell command and output will be like. Since all replication is 'global',
> so no need to display the cluster name here. In the future, the command will
> be extended for other scenarios, such as 1) replicated only to selected peers
> or 2) indicate table:colfam on slave side
> {code: title=hbase shell command:list_replicated_tables |borderStyle=solid}
> hbase(main):001:0> list_replicated_tables
> TABLE:COLUMNFAMILY ReplicationType
>
> t1_dn:cf1 GLOBAL
>
> t2_dn:cf2 GLOBAL
>
> usertable:family GLOBAL
>
> 3 row(s) in 0.4110 seconds
> hbase(main):003:0> list_replicated_tables "dn"
> TABLE:COLUMNFAMILY ReplicationType
>
> t1_dn:cf1 GLOBAL
>
> t2_dn:cf2 GLOBAL
>
> 2 row(s) in 0.0280 seconds
> {code}
> -------------- The original JIRA description, keep as the history of
> discussion ---------------
> This jira is to provide a hbase shell command which can give user can
> overview of the tables/columnfamilies currently being replicated. The
> information will help system administrator for design and planning, and also
> help application programmer to know which tables/columns should be
> watchout(for example, not to modify a replicated columnfamily on the slave
> cluster)
> Currently there is no easy way to tell which table(s)/columnfamily(ies)
> replicated from or to a particular cluster.
>
> On Master Cluster, an indirect method can be used by combining two steps: 1)
> $describe 'usertable' and 2) $list_peers to map the REPLICATION_SCOPE to
> target(aka slave) cluster
>
> On slave cluster, this is no existing API/methods to list all the tables
> replicated to this cluster.
> Here is an example, and prototype for Master cluster
> {code: title=hbase shell command:list_replicated_tables |borderStyle=solid}
> hbase(main):001:0> list_replicated_tables
> TABLE COLUMNFAMILY TARGET_CLUSTER
> scores course hdtest017.svl.ibm.com:2181:/hbase
> t3_dn cf1 hdtest017.svl.ibm.com:2181:/hbase
> usertable family hdtest017.svl.ibm.com:2181:/hbase
> 3 row(s) in 0.3380 seconds
> {code}
> -------------- end of original description
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