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From "shankarlingayya (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-9637) HBase internal (ROOT and META) tables replication factor configuration apart from the user table data
Date Mon, 23 Sep 2013 14:08:05 GMT
shankarlingayya created HBASE-9637:
--------------------------------------

             Summary: HBase internal (ROOT and META) tables replication factor configuration
apart from the user table data
                 Key: HBASE-9637
                 URL: https://issues.apache.org/jira/browse/HBASE-9637
             Project: HBase
          Issue Type: New Feature
          Components: master, regionserver
            Reporter: shankarlingayya
            Priority: Minor


{noformat}

HBase has two types of data
1. Internal data (ROOT & META tables)
2. User loaded table data

For accessing the HBase user data we must have ROOT & META, assume that
the nodes in which ROOT & META table are down/not accessible (assuming 3 replication factor)
all the 3 nodes went down.

Now the entire HBase system in not accessible (user data will be TB, while ROOT & META
Table will be few MB)

so, it is better we can have the flexibility of configuring the more replication for Internal
Table (ROOT & META)

Already we have the replication configuration in HBase but the problem with that is it is
for both internal table (ROOT. META) & also for User Table data..

Since user data willl be in TB so, increasing the replication will consume huge space for
user which is not feasible.

So it is better and safe to have more replication of only the Internal tables (ROOT, META)
by giving sepecate configurable parameter to user.

{noformat}




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