hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-10347) HRegionInfo changes for adding replicaId and MetaEditor/MetaReader changes for region replicas
Date Wed, 05 Feb 2014 04:14:14 GMT

     [ https://issues.apache.org/jira/browse/HBASE-10347?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Enis Soztutar updated HBASE-10347:

    Attachment: hbase-10347_redo_v6.patch

Thanks for reviews. With Stack's and Sergey's +1's I think this is almost ready to be committed
to branch. 
v6 version addressed the UT failure and javadoc warnings. I might have to do another rebase
after HBASE-10277 is in trunk, but it should be straightforward. 

> HRegionInfo changes for adding replicaId and MetaEditor/MetaReader changes for region
> ----------------------------------------------------------------------------------------------
>                 Key: HBASE-10347
>                 URL: https://issues.apache.org/jira/browse/HBASE-10347
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Region Assignment
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 0.99.0
>         Attachments: hbase-10347_redo_v4.patch, hbase-10347_redo_v5.patch, hbase-10347_redo_v6.patch
> As per parent jira, the cleanest way to add region replicas we think is to actually create
one more region per replica per primary region. So for example, if a table has 10 regions
with replication = 3, the table would indeed be created with 30 regions. These regions will
be handled and assigned individually for AM purposes. 
> We can add replicaId to HRegionInfo to indicate the replicaId, and use this to differentiate
different replicas of the same region. So, primary replica would have replicaId = 0, and the
others will have replicaId > 0. 
> These replicas will share the same regionId prefix, but differ in an appended replicaId.
The primary will not contain the replicaId so that no changes would be needed for existing
> In meta, the replica regions are kept in the same row as the primary ( so for above example,
there will be 10 rows in meta). The servers for the replicas are kept in columns like "server+replicaId".

This message was sent by Atlassian JIRA

View raw message