[
https://issues.apache.org/jira/browse/HBASE-11288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17154253#comment-17154253
]
Duo Zhang commented on HBASE-11288:
-----------------------------------
{quote}
Let's follow Stack's previous comment? Let's not discuss replicas or caching as
they could be applied to either split meta implementation. Let's focus on the
tiering issue?
{quote}
I do not know how can we make a cache server for a general root table. Please
give a clear design on how to do it.
{quote}
I'm missing something. It is a POC and its intent was to gather information and
help answer critical questions like this. So I'm not sure what the concern is
against POCs doing what POCs are supposed to be used for? Rest assured for this
particular case I am more concerned as to how we came to the decision than the
actual decision. It would be best for everyone if we could apply some rigor for
something so important.
{quote}
It is you that suggestted we run ITBLL against the POC, not me. Correct me if
I'm wrong.
{quote}
It is definitely good for that. But what prevents us from using it for this
purpose? Wether it always passes, fails sometimes or fail always we learn
something and that is valuable for determining wether proc v2 can support
2-tier now, short term, long term or never. Then we can come to an informed
decision. For example we might decide we cannot wait that long for proc v2 to
mature so we go with 1-tier.
{quote}
I have shown my opinion above. I do not think this will help. But you're free
to run ITBLL by yourself and post the result here, no one can stop you doing
this right?
{quote}
It does help but it is still making a compromise to avoid the concerns of
2-tier. Which is why my main concern now is applying some rigor to help us come
to a well informed decision as to wether proc v2 cannot support it and we
should go with 1-tier. I think proc v2 is what was missing that prevented us
from succeeding in the past although it’s possible it may not be mature enough
at this stage.
{quote}
I'm a bit concerned. Why do you think if proc-v2 can support 2-tier than we
should use 2-tier? Please focus on the problem of the 'master local region'
itself? Or your point is that 'master local region' does not use 2-tier so it
is not a good solution? This does not make sense to me.
Thanks.
> Splittable Meta
> ---------------
>
> Key: HBASE-11288
> URL: https://issues.apache.org/jira/browse/HBASE-11288
> Project: HBase
> Issue Type: Umbrella
> Components: meta
> Reporter: Francis Christopher Liu
> Assignee: Francis Christopher Liu
> Priority: Major
>
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
