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https://issues.apache.org/jira/browse/HBASE-12476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14223528#comment-14223528
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Rishit Shroff commented on HBASE-12476:
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[~stack]: Thanks for looking through the code and providing the inputs. Please
find my responses below:
What direction do you think we should take this contrib?Toward the layout
described in the hydrabase doc or are you thinking we'd recast it as an
in-cluster quorum-of-regions? If the latter, would it be on all the time – a
different sort of hbase – or would it be something you could enable? HBase 2.0
or HBase 1.0?
bq. Rishit: The RAFT module by itself is pretty independent of in-cluster vs
multi-cluster setup. It just deals with peers with ranks and replication. I
think the question will be about how we want to take the integration of this
protocol into HBase. IMO, we can target for in-cluster mode first and then make
it applicable to cross-cluster. Also, since HBase 1.0 is a soon to be released
version, I would prefer to put into into HBase 2.0. For sure, we will need to
meetup and chat about this. I would prefer to have this as an opt-in option.
What should we do about swift out here in apache hbase? We'd redo it as pb and
rpc calls?
bq. Rishit: The swift jars used in current HBase are old, we definitely need to
upgrade them and fix the changed dependencies.
airlift is not for REST services, right? You are just using it for stats? You
like it? Better than the histograms we have going on out herein apache hbase?
You have a Counter, Duration, TimeDistribution, and ExpotentialDecay.. Need
airlift for this or could redo doing our current metrics dependencies?
bq. Rishit: Yes, even in my profiling, I saw airlift as a hot-spot. I will file
a JIRA to move the stats out of airlift and choose the other options (hadoop
style, or [~daviddengcn] work for histogram at the very least.
Should apache hbase make use of jmxutils too? How you folks using it (Not
reviewed the patch yet).
bq. Rishit: AFAIK, they are used by airlift package. I will double check.
Thanks,
Rishit
> HydraBase Consensus Protocol
> ----------------------------
>
> Key: HBASE-12476
> URL: https://issues.apache.org/jira/browse/HBASE-12476
> Project: HBase
> Issue Type: Sub-task
> Components: Consensus, wal
> Reporter: Gaurav Menghani
> Assignee: Gaurav Menghani
> Attachments: 0001-HydraBase-consensus-protocol.patch
>
>
> This is the first patch for the HydraBase consensus protocol implemented
> according to the Raft consensus protocol
> (https://ramcloud.stanford.edu/raft.pdf), as advertised in (HBASE-12259)
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