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From "Benedict (JIRA)" <>
Subject [jira] [Updated] (CASSANDRA-14705) ReplicaLayout follow-up
Date Fri, 07 Sep 2018 17:38:00 GMT


Benedict updated CASSANDRA-14705:
    Reviewers: Alex Petrov, Ariel Weisberg

> ReplicaLayout follow-up
> -----------------------
>                 Key: CASSANDRA-14705
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Benedict
>            Assignee: Benedict
>            Priority: Major
> Clarify the new {{ReplicaLayout}} code, separating it into ReplicaPlan (for what we want
to do) and {{ReplicaLayout}} (for what we know about the cluster), with well defined semantics
(and comments in the rare cases those semantics are weird)
> Found and fixed some bugs:
> 	- {{commitPaxos}} was using only live nodes, when needed to include down
> 	- We were not writing to pending transient replicas
> 	- On write, we were not hinting to full nodes with transient replication enabled (since
we filtered to {{liveOnly}}, in order to include our transient replicas above {{blockFor}})
>         - If we speculated, in {{maybeSendAdditionalReads}} (in read repair) we would
only consult the same node we had speculated too.  This also applied to {{maybeSendAdditionalWrites}}
- and this issue was also true pre-TR.

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