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https://issues.apache.org/jira/browse/CASSANDRA-8012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14180120#comment-14180120
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Serge Balyuk commented on CASSANDRA-8012:
-----------------------------------------
I've witnessed similar issue. After upgrading one node from 2.0.8 to 2.1.0,
cqlsh on that node was behaving as described above. At the same time,
{{nodetool describecluster}} showed different schema versions for the upgraded
node and the rest of nodes in cluster. After the first attempt at {{nodetool
resetlocalschema}}, the node's schema version changed but it was still
different from cluster's common schema version. Subsequent attempts at
{{resetlocalchema}} had no effect. After restarting upgraded node {{nodetool
describecluster}} on it showed {{UNREACHABLE}} for all nodes except itself.
boot.log had many exceptions similar to this:
{code}
WARN o.a.c.net.IncomingTcpConnection - UnknownColumnFamilyException reading
from socket; closing org.apache.cassandra.db.UnknownColumnFamilyException:
Couldn't find cfId=.....
....
DEBUG o.a.cassandra.net.MessagingService - Reseting version for /A.B.C.D
{code}
At the same time {{nodetool status}} shows {{UN}} for all nodes from both
upgraded node and old nodes.
Had to fallback to upgrading to 2.0.10. After removing all incompatible
sstables which 2.1.0 created during its uptime, {{describecluster}} shows
single version for all nodes, cqlsh performs as expected on
upgraded-then-downgraded node.
As noted in CASSANDRA-8023 this issue may be not just a tools issue unless I've
missed some important step in 2.0.x -> 2.1.0 upgrade procedure.
> cqlsh "DESCRIBE KEYSPACES;" returns empty after upgrade
> -------------------------------------------------------
>
> Key: CASSANDRA-8012
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8012
> Project: Cassandra
> Issue Type: Bug
> Components: Tools
> Environment: cassandra 2.1.0
> Reporter: Shawn Zhou
> Assignee: Tyler Hobbs
> Labels: cqlsh
>
> after upgrade from 2.0.7 to 2.1.0
> run cqlsh "DESCRIBE KEYSPACES;" returns empty result;
> query individual table does return data;
> See below:
> {noformat}
> [root@dc1-stg-cassandra-08 cassandra]# cqlsh
> dc1-stg-cassandra-08.dc01.revsci.net -k as_user_segment
> Connected to Stage Cluster at dc1-stg-cassandra-08.dc01.revsci.net:9042.
> [cqlsh 5.0.1 | Cassandra 2.1.0 | CQL spec 3.2.0 | Native protocol v3]
> Use HELP for help.
> cqlsh:as_user_segment> DESCRIBE KEYSPACES;
> <empty>
> cqlsh:as_user_segment> select * from user_segments_blob where id =
> '8e6090087fc1a7591a99dc4cb744ac43';
> id | segments
> ----------------------------------+------------------------------------------------------------------------------------
> 8e6090087fc1a7591a99dc4cb744ac43 |
> 0x94160000b0150000911d00003b0e0000211a0000ee22000072160000ab1c0000df0f000042040000
> (1 rows)
> {noformat}
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