[jira] [Commented] (CASSANALYTICS-24) Analytics should query a cluster for supported sstable versions and write in the highest known version to the cluster.

["Shailaja Koppu (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANALYTICS-24?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18090954#comment-18090954 ] 

Shailaja Koppu commented on CASSANALYTICS-24:
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Circle CI: [https://app.circleci.com/pipelines/github/skoppu22/cassandra-analytics/150/workflows/c112514d-49f8-44f3-a605-cb6a36ca239f]

 

> Analytics should query a cluster for supported sstable versions and write in the highest known version to the cluster.
> ----------------------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANALYTICS-24
>                 URL: https://issues.apache.org/jira/browse/CASSANALYTICS-24
>             Project: Apache Cassandra Analytics
>          Issue Type: Task
>          Components: Writer
>            Reporter: Doug Rohrer
>            Assignee: Shailaja Koppu
>            Priority: Normal
>             Fix For: 1.0
>
>          Time Spent: 3h 40m
>  Remaining Estimate: 0h
>
> Post TCM {{storage_compatibility_mode}} decides what formats we write various things in. The analytics library should take the versions a cluster knows how to read into account when interacting with and authoring files on a node. Ideally we’d be able to query from the cluster what SSTable versions the cluster can read, what version it may _prefer_ (storage compatibility mode is a good example of prefer vs. support), and analytics can make a choice as to what version of SSTable to write to the cluster given which sstable versions it supports.
> Today the write format appears to be determined, essentially, by the MessagingService version. We should leverage that through the sidecar → C* node pathway so we know what version to write with the SBW.



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