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https://issues.apache.org/jira/browse/CASSANDRA-8058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14160100#comment-14160100
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Nicolas DOUILLET commented on CASSANDRA-8058:
---------------------------------------------
In the same topic, I think that something else is not consistent, on
bootstrapping, concerning the Unavailability.
In {{org.apache.cassandra.db.ConsistencyLevel#assureSufficientLiveNodes}} we're
using the concatenation of the natural endpoints and the pending endpoints to
determine whether there is enough alive nodes.
The number of required nodes, in that case, is only based on the table
configuration and the consistency level.
However, later, in order to validate a write request, the way we compute the
number of required nodes is slightly different because we're adding the number
of pending nodes.
I think that, during a bootstrap, some requests may end with a timeout, while
they could/would had been detected as unavailable before.
> local consistency level during boostrap (may cause a write timeout on each
> write request)
> -----------------------------------------------------------------------------------------
>
> Key: CASSANDRA-8058
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8058
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Nicolas DOUILLET
> Priority: Critical
> Fix For: 1.2.19
>
> Attachments:
> 0001-during-boostrap-block-only-for-local-pending-endpoin.patch.txt
>
>
> Hi,
> During bootstrap, for {{LOCAL_QUORUM}} and {{LOCAL_ONE}} consistencies, the
> {{DatacenterWriteResponseHandler}} were waiting for pending remote endpoints.
> I think that's a regression, because it seems that it has been correctly
> implemented in CASSANDRA-833, but removed later.
> It was specifically annoying in the case of {{RF=2}} and {{cl=LOCAL_QUORUM}},
> because during a bootstrap of a remote node, all requests ended in
> {{WriteTimeout}}, because they were waiting for a response that would never
> happen.
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