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From horschi <hors...@gmail.com>
Subject Re: auto_bootstrap=false broken?
Date Tue, 04 Aug 2015 17:50:38 GMT
Hi Robert,

sorry for the confusion. Perhaps write_survey is not my solution
(unfortunetaly I cant get it to work, so I dont really know). I just
thought that it *could* be my solution.


What I actually want:
I want to be able to start a new node, without it starting to serve reads
prematurely. I want cassandra to wait for me to confirm "everything is ok,
now serve reads".



Possible solutions so far:

A) When starting a new node with auto_bootstrap=false, then I get a node
that has no data, but serves reads. In my opinion it would be cleaner if it
would stay in a joining state where it only receives writes.

B) Disabling join_ring on my new node does nothing. The new node will not
have a token. I cant see it in "nodetool status". Therefore I assume it
will not receive any writes.

C) write_survey unfortunetaly does not seem to work for me: My new node,
which I start with survey-mode, gets writes from other nodes and shows as
"joining" in the ring. Which is good! But does not get a schema, so it
throws exceptions when receiving these writes. I assume its just a bug in
2.0.




Disclaimer: I am using C* 2.0, with which I can't get the desire behaviour
(or at least I don't know how).

kind regards,
Christian




On Tue, Aug 4, 2015 at 7:12 PM, Robert Coli <rcoli@eventbrite.com> wrote:

> On Tue, Aug 4, 2015 at 6:19 AM, horschi <horschi@gmail.com> wrote:
>
>> I would like to separate these steps:
>> 1. assign tokens
>> 2. have the node in a joining state, so that I can copy in data
>> 3. mark the node as ready
>>
>
>
>> Did anyone ever use write_survey for such a partial bootstrapping?
>>
>
> What you're asking doesn't make sense to me.
>
> What does "partial bootstrap" mean? Where are you getting the data from?
> How are you "copying in data" and why do you need the node to be "in a
> joining state" to do that?
>
> https://issues.apache.org/jira/browse/CASSANDRA-6961
>
> Explains a method by which you can repair a partially joined node. In what
> way does this differ from what you want?
>
> =Rob
>
>

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