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https://issues.apache.org/jira/browse/CASSANDRA-18984?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sam Tunnicliffe updated CASSANDRA-18984:
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Change Category: Semantic
Complexity: Normal
Reviewers: Marcus Eriksson, Sam Tunnicliffe
Status: Open (was: Triage Needed)
> Simplify scope-local retries using Entry.Id
> -------------------------------------------
>
> Key: CASSANDRA-18984
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18984
> Project: Cassandra
> Issue Type: Improvement
> Components: Transactional Cluster Metadata
> Reporter: Sam Tunnicliffe
> Assignee: Alex Petrov
> Priority: Normal
> Attachments: ci_summary.html
>
>
> If a node submits a commit request to the CMS which succeeds but doesn't
> receive the response, it will automatically retry. However, the CMS node
> handling the resubmission most likely reject it as transformations are
> generally not idempotent. The submitter will need to then handle that
> rejection of the resubmission, which can currently mean inspecting the
> ClusterMetadata to see if the expected effects of the transformation are
> present. By using the entry id, the CMS node can identify the resubmission as
> such and return the same (success) response it sent (or should have sent) the
> first time.
> Implementation can be found in:
> https://github.com/beobal/cassandra/commit/c3c33ea1430e1bd14552f68de75bb9c4166fc986
> CI summary results attached. For right now, we've only been foccussing on
> unit tests, in-jvm & python dtests, so the failures in other suites are to be
> expected. Unfortunately, the archive containing the detailed results is too
> large to attach as a single file, so will look into the best way to work
> around that.
> The intention is to fix all suites before merging the feature branch.
> ||Suite||Total||Passed||Skipped||Failed||Errors||
> |jvm dtest|1508|1465|24|8|11|
> |python dtest|1083|790|262|28|3|
> |unit|12082|12006|61|6|9|
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