question Re: Metastore HA Active/Active ? in Archives of Support Questions (Read Only)

Metastore HA Active/Active ?

albertozgz — Thu, 03 Aug 2017 21:44:20 GMT

With MetaStore HA, we have a Act/Act or a Act/Standby?
we can have a metastore as ReadOnly for BI tool pourposes?
Is Hive Metastore HA compatible with Ranger ? In cloudera Metastore is not compatible with Kerberos

Re: Metastore HA Active/Active ?

drussell — Fri, 04 Aug 2017 15:40:24 GMT

Hi @Alberto Ramon, three questions in one! Just as a hint, in the future you may get quicker responses if you break your questions down to single question per post.

Anyway, to answer your question, Metastore HA is more of an Active/Standby type pattern, from the documentation:

"Failover Scenario A Hive metastore client always uses the first URI to connect with the metastore server. If the metastore server becomes unreachable, the client randomly picks up a URI from the list and attempts to connect with that"

For more information please look here https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.0/bk_hadoop-high-availability/content/ha-hive-use-and-failover.html

I would not recommend that you use the Metastore HA outside of its intended usage, there could be unforseen concequences.

Hive Metastore HA is compatible with Ranger and is compatible with Kerberised clusters.

Hope that helps!

Re: Metastore HA Active/Active ?

albertozgz — Sun, 06 Aug 2017 21:22:09 GMT

Thanks , It's OK

Re: Metastore HA Active/Active ?

albertozgz — Mon, 07 Aug 2017 05:45:58 GMT

HIVE-10815 , Is this a load balacer?