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Posted to commits@cassandra.apache.org by "Yifan Cai (Jira)" <ji...@apache.org> on 2025/01/28 18:33:00 UTC
[jira] [Commented] (CASSSIDECAR-180) Introduces sidecar endpoint to vend streaming data statistics
[ https://issues.apache.org/jira/browse/CASSSIDECAR-180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17921822#comment-17921822 ]
Yifan Cai commented on CASSSIDECAR-180:
---------------------------------------
Thank you for the patch! Please also post the CI link.
> Introduces sidecar endpoint to vend streaming data statistics
> -------------------------------------------------------------
>
> Key: CASSSIDECAR-180
> URL: https://issues.apache.org/jira/browse/CASSSIDECAR-180
> Project: Sidecar for Apache Cassandra
> Issue Type: Improvement
> Components: Rest API
> Reporter: Arjun Ashok
> Assignee: Arjun Ashok
> Priority: Normal
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> This proposal is part of an effort to introduce bespoke Sidecar APIs to support key operational functionality currently managed through nodetool commands. Introducing these APIs offers several benefits:
>
> * Strong Contract Definition: APIs provide a well-defined contract for both request and response structures, reducing errors in operational tooling by eliminating the need to parse command results.
> * Error Handling: A clear response contract allows for meaningful error messages to be communicated to clients, without exposing internal implementation details.
> * Input Validation: APIs can incorporate input validation to enhance security by protecting against command injection attacks.
> * Version Compatibility: By exposing a standardized interface, APIs ensure compatibility across different Cassandra versions, through the sidecar’s abstraction.
> * Access Control: APIs enable fine-grained access control, leveraging permissions and roles associated with client identities for precise authorization.
> This specific task introduces a endpoint that vends stream statistics, equivalent to a summary of a subset of the `nodetool netstats` dataset, specifically the aggregation of files and bytes sent/received and progress across sessions.
> For example, this is especially useful to determine the streaming status of nodes during leaving/replacement cases.
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