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https://issues.apache.org/jira/browse/CASSANDRA-13704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17880836#comment-17880836
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Caleb Rackliffe edited comment on CASSANDRA-13704 at 9/11/24 9:26 PM:
----------------------------------------------------------------------
|4.0|[patch|https://github.com/apache/cassandra/pull/3526]| [^ci_summary.html]
|n/a|
|4.1|[patch|https://github.com/apache/cassandra/pull/3539]|
[^ci_summary-1.html] |n/a|
|5.0|[patch|https://github.com/apache/cassandra/pull/3544]|...|...|
I've now posted PRs for 4.0, 4.1, and 5.0. CI is looking pretty clean on 4.0
and 4.1, and 5.0 runs are in progress...
The patch introduces two new YAML options, {{log_out_of_token_range_requests}}
and {{reject_out_of_token_range_requests}}, which default to {{true}}. They
determine how streaming, repair, hints, mutations, read repair, and point/range
reads handle cases where they are being executed on nodes that do not own the
range(es) for the data involved.
When enabled, {{log_out_of_token_range_requests}} logs at WARN level,
indicating the kind of request, its source, the invalid ranges requested, and
the ranges the node actually owns. When {{reject_out_of_token_range_requests}},
out-of-range operations are outright rejected, rather than being accepted by a
node that may never own the relevant range(s) and cannot, for example, safely
participate in a write quorum. (Writes are not considered out-of-range if the
range is pending, but in the event the node itself isn't yet aware of the
pending range, they will be rejected. This may cause a short window of degraded
availability, but it is safer and more visible than silently and erroneously
accepting them.)
Once review settles, I'll likely add entries to {{NEWS.txt}} along w/ the
CHANGES content, but given this is something we should probably never disable,
I'm not too keen on adding it to the example {{cassandra.yaml}}.
was (Author: maedhroz):
|4.0|[patch|https://github.com/apache/cassandra/pull/3526]| [^ci_summary.html]
| n/a |
|4.1|[patch|https://github.com/apache/cassandra/pull/3539]|
[^ci_summary-1.html] | n/a |
|5.0| [patch|https://github.com/apache/cassandra/pull/3544] | ... | ... |
> Safer handling of out of range tokens
> -------------------------------------
>
> Key: CASSANDRA-13704
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13704
> Project: Cassandra
> Issue Type: Bug
> Components: Legacy/Coordination, Legacy/Observability
> Reporter: Sam Tunnicliffe
> Assignee: Caleb Rackliffe
> Priority: Urgent
> Fix For: 4.0.x, 4.1.x, 5.0.x
>
> Attachments: ci_summary-1.html, ci_summary.html,
> result_details.tar-1.gz, result_details.tar.gz
>
> Time Spent: 3h
> Remaining Estimate: 0h
>
> It is possible for nodes to have a divergent view of the ring, which can
> result in some operations being sent to the wrong nodes. This is an umbrella
> ticket to mitigate such issues by adding logging when a node is asked to
> perform an operation for tokens it does not own. This will be useful for
> detecting when the nodes' views of the ring diverge, which is not highly
> visible at the moment, and also for post-hoc analysis.
> It may also be beneficial to straight up reject certain operations, though
> this will need to balance the risk of performing those ops against the
> consequences rejecting them has on availability.
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