Prefix hraven to all hbase tables

[angadsingh]

Useful to namespace hraven tables separately in a production hbase cluster.

[vrushalic]

While I agree that this is a good idea to prefix tablenames, I am thinking about existing deployments of hRaven that already have tables without the prefix in production. I am wondering if we can provide the namespace name along with the dot as an argument to create_table and to the code so that the default can stay as blank at https://github.com/twitter/hraven/blob/master/hraven-core/src/main/java/com/twitter/hraven/Constants.java#L44 and still allow us the flexibility of passing it in to support the namespace classification for table names..

[jrottinghuis]

Agreed, we had the same discussion when we went into production, we wanted to change to have the prefix. We did not want to break backwards compatibility. Having an optional flag to add the "namespace" prefix would be great. We might even do the same internally and take the hit to rename the tables.

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