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From "Ariel Weisberg (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9628) "Unknown keyspace system_traces" exception when using nodetool on a new cluster
Date Fri, 04 Dec 2015 18:17:10 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15041898#comment-15041898
] 

Ariel Weisberg commented on CASSANDRA-9628:
-------------------------------------------

I am +1 on the improved error message, but if we are going to resolve this it would be as
not reproducible. We have two users who claim it is reproducible which implies that we are
just not getting/following the correct reproduction steps.

What they are describing is that it remains in a broken state until they create a table and
that it's not a race that is resolved by bootstrap completing? [~tzach] [~evanv] is that accurate?

> "Unknown keyspace system_traces" exception when using nodetool on a new cluster
> -------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-9628
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9628
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Tools
>            Reporter: tzach
>            Assignee: Carl Yeksigian
>            Priority: Minor
>             Fix For: 2.1.x
>
>
> When creating a new cluster from scratch,  nodetool status fails on system_traces as
follow
> {code}
> $ nodetool status
> error: Unknown keyspace system_traces
> -- StackTrace --
> java.lang.AssertionError: Unknown keyspace system_traces
> 	at org.apache.cassandra.db.Keyspace.<init>(Keyspace.java:270)
> 	at org.apache.cassandra.db.Keyspace.open(Keyspace.java:119)
> 	at org.apache.cassandra.db.Keyspace.open(Keyspace.java:96)
> ...
> {code}
> the problem disappear when creating an empty keyspace
> {code}
> cqlsh> create keyspace temp WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor'
: 2 };
> {code}
> My guess is system_traces initialization complete only after any data insertion.
> Before it does, any attempt to read  from it either from nodetool, cqlsh or streaming
to a new node will fail.



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