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https://issues.apache.org/jira/browse/CASSANDRA-12512?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Yuki Morishita resolved CASSANDRA-12512.
----------------------------------------
    Resolution: Not A Problem

This was fixed in the patch in CASSANDRA-12551. Closing as "Not A Problem" any 
more.

> compaction-stress: assertion error on accessing Schema.instance from 
> client-mode tool
> -------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-12512
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12512
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Wei Deng
>            Assignee: Yuki Morishita
>             Fix For: 3.x
>
>
> When I was trying the new compaction-stress tool from 3.10, I ran into the 
> following error:
> {noformat}
> automaton@0ce59d338-1:~/cassandra-trunk$ ./tools/bin/compaction-stress write 
> -d /tmp/compaction -g 5 -p 
> https://gist.githubusercontent.com/tjake/8995058fed11d9921e31/raw/a9334d1090017bf546d003e271747351a40692ea/blogpost.yaml
>  -t 4
> java.lang.AssertionError: This assertion failure is probably due to accessing 
> Schema.instance from client-mode tools - See CASSANDRA-8143.
>       at org.apache.cassandra.config.CFMetaData.<init>(CFMetaData.java:288)
>       at org.apache.cassandra.config.CFMetaData.<init>(CFMetaData.java:66)
>       at 
> org.apache.cassandra.config.CFMetaData$Builder.build(CFMetaData.java:1332)
>       at org.apache.cassandra.config.CFMetaData.compile(CFMetaData.java:433)
>       at 
> org.apache.cassandra.stress.StressProfile.init(StressProfile.java:174)
>       at 
> org.apache.cassandra.stress.StressProfile.load(StressProfile.java:801)
>       at 
> org.apache.cassandra.stress.CompactionStress.getStressProfile(CompactionStress.java:162)
>       at 
> org.apache.cassandra.stress.CompactionStress$DataWriter.run(CompactionStress.java:289)
>       at 
> org.apache.cassandra.stress.CompactionStress.main(CompactionStress.java:353)
> {noformat}
> [UPDATE] It appears that {{compaction-stress compact}} fails on the same 
> assert but via a totally different code path. The stack trace is like the 
> following:
> {noformat}
> automaton@0ce59d338-1:~/cassandra-trunk$ ./tools/bin/compaction-stress 
> compact -d /tmp/compaction -p 
> https://gist.githubusercontent.com/tjake/8995058fed11d9921e31/raw/a9334d1090017bf546d003e271747351a40692ea/blogpost.yaml
>  -t 4
> java.lang.AssertionError: This assertion failure is probably due to accessing 
> Schema.instance from client-mode tools - See CASSANDRA-8143.
>       at org.apache.cassandra.config.CFMetaData.<init>(CFMetaData.java:288)
>       at org.apache.cassandra.config.CFMetaData.<init>(CFMetaData.java:66)
>       at 
> org.apache.cassandra.config.CFMetaData$Builder.build(CFMetaData.java:1332)
>       at org.apache.cassandra.config.CFMetaData.compile(CFMetaData.java:433)
>       at 
> org.apache.cassandra.db.SystemKeyspace.compile(SystemKeyspace.java:434)
>       at 
> org.apache.cassandra.db.SystemKeyspace.<clinit>(SystemKeyspace.java:115)
>       at 
> org.apache.cassandra.stress.CompactionStress$Compaction.run(CompactionStress.java:213)
>       at 
> org.apache.cassandra.stress.CompactionStress.main(CompactionStress.java:353)
> {noformat}
> (the last revision of the description had the wrong stack trace pasted and 
> I've corrected that.)
> As you can see this 2nd assert on {{compaction-stress compact}} is triggered 
> by SystemKeyspace class, so fix in StressProfile class is only able to solve 
> the assert problem for {{compaction-stress write}}, but not 
> {{compaction-stress compact}}.



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