[jira] [Commented] (CASSANDRA-20600) DB Crashes on startup if accord tables exist but accord is disabled

["David Capwell (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-20600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18003637#comment-18003637 ] 

David Capwell commented on CASSANDRA-20600:
-------------------------------------------

+1

> DB Crashes on startup if accord tables exist but accord is disabled
> -------------------------------------------------------------------
>
>                 Key: CASSANDRA-20600
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-20600
>             Project: Apache Cassandra
>          Issue Type: Bug
>          Components: Accord
>            Reporter: Jon Haddad
>            Assignee: Pranav
>            Priority: Normal
>
> We should at least have a clear message why the DB isn't starting instead of an exception so the user knows this isn't a bug.
> I'm not sure if there's a better approach other than an error.  Backing out of accord by disabling the config while there's tables seems like a significant user error so preventing startup might be the only sane thing we can do.
> {noformat}
> ERROR [main] 2025-04-25T14:01:08,040 CassandraDaemon.java:926 - Exception encountered during startup
> java.lang.IllegalStateException: Can't dereference Success for a rejected execution: INVALID: Cannot create table games.user_scores with transactional mode full with accord.enabled set to false
> 	at org.apache.cassandra.tcm.Transformation$Rejected.success(Transformation.java:177)
> 	at org.apache.cassandra.tcm.log.LogState.flatten(LogState.java:112)
> 	at org.apache.cassandra.tcm.log.LocalLog.replayPersisted(LocalLog.java:597)
> 	at org.apache.cassandra.tcm.log.LocalLog.ready(LocalLog.java:679)
> 	at org.apache.cassandra.tcm.Startup.initializeAsNonCmsNode(Startup.java:162)
> 	at org.apache.cassandra.tcm.Startup.initialize(Startup.java:110)
> 	at org.apache.cassandra.tcm.Startup.initialize(Startup.java:91)
> 	at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:274)
> 	at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:745)
> 	at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:899)
> {noformat}



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