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https://issues.apache.org/jira/browse/CASSANDRA-11537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17644872#comment-17644872
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Brandon Williams commented on CASSANDRA-11537:
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I think the only problem might be if the server wouldn't start due to some kind
of problem and you couldn't introspect anything to find out what's going on,
but that should be a rare case and generally I don't think you'd find the
solution over JMX anyway.
> Give clear error when certain nodetool commands are issued before server is
> ready
> ---------------------------------------------------------------------------------
>
> Key: CASSANDRA-11537
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11537
> Project: Cassandra
> Issue Type: Improvement
> Components: Legacy/Observability, Local/Startup and Shutdown
> Reporter: Edward Capriolo
> Priority: Low
> Labels: lhf
>
> As an ops person upgrading and servicing Cassandra servers, I require a more
> clear message when I issue a nodetool command that the server is not ready
> for it so that I am not confused.
> Technical description:
> If you deploy a new binary, restart, and issue nodetool
> scrub/compact/updatess etc you get unfriendly assertion. An exception would
> be easier to understand. Also if a user has turned assertions off it is
> unclear what might happen.
> {noformat}
> EC1: Throw exception to make it clear server is still in start up process.
> :~# nodetool upgradesstables
> error: null
> -- StackTrace --
> java.lang.AssertionError
> at org.apache.cassandra.db.Keyspace.open(Keyspace.java:97)
> at
> org.apache.cassandra.service.StorageService.getValidKeyspace(StorageService.java:2573)
> at
> org.apache.cassandra.service.StorageService.getValidColumnFamilies(StorageService.java:2661)
> at
> org.apache.cassandra.service.StorageService.upgradeSSTables(StorageService.java:2421)
> {noformat}
> EC1:
> Patch against 2.1 (branch)
> https://github.com/apache/cassandra/compare/trunk...edwardcapriolo:exception-on-startup?expand=1
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