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https://issues.apache.org/jira/browse/CASSANDRA-10674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15034022#comment-15034022
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Paulo Motta commented on CASSANDRA-10674:
-----------------------------------------
bq. In the new {{mutateMV}}, pairedEndpoint.isPresent() in the conditional
takes care of the first place but not the second while there are
pendingEndpoints.
That's right, good catch! I simplified but only thinking of the first case, but
indeed the second scenario is valid as there may be a pending joining node
which will be a natural endpoint for that view update. Update this and minor
typo and re-submitted tests.
Something I don't get in the fist scenario though is that besides writing to
the batchlog, the node is also persisting the mutation locally via the
{{asyncWriteBatchedMutations}} call, so the batchlog is cleaned if this call is
successful afaik. If there are no natural view endpoints, shouldn't we write
only to the batchlog and skip the local write via
{{asyncWriteBatchedMutations}}?
> Materialized View SSTable streaming/leaving status race on decommission
> -----------------------------------------------------------------------
>
> Key: CASSANDRA-10674
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10674
> Project: Cassandra
> Issue Type: Bug
> Components: Coordination, Distributed Metadata
> Reporter: Joel Knighton
> Assignee: Paulo Motta
> Fix For: 3.0.1, 3.1
>
> Attachments: leaving-node-debug.log, receiving-node-debug.log
>
>
> On decommission of a node in a cluster with materialized views, it is
> possible for the decommissioning node to begin streaming sstables for an MV
> base table before the receiving node is aware of the leaving status.
> The materialized view base/view replica pairing checks pending endpoints to
> handle the case when an sstable is received from a leaving node; without the
> leaving message, this check breaks and an exception is thrown. The streamed
> sstable is never applied.
> Logs from a decommissioning node and a node receiving such a stream are
> attached.
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