Hi all!
We're using cassandra since a couple of month to get familiar with it.
We're currently using only 1-node. Yesterday our server had to be
restarted and now cassandra does not start anymore.
It reports:
INFO [main] 2018-06-05 09:50:43,030 ColumnFamilyStore.java:406 -
Initializing system_schema.indexes
INFO [main] 2018-06-05 09:50:43,036 ViewManager.java:137 - Not
submitting build tasks for views in keyspace system_schema as storage
service is not initialized
INFO [main] 2018-06-05 09:50:43,283 ColumnFamilyStore.java:406 -
Initializing system_traces.events
INFO [main] 2018-06-05 09:50:43,286 ColumnFamilyStore.java:406 -
Initializing system_traces.sessions
INFO [main] 2018-06-05 09:50:43,287 ViewManager.java:137 - Not
submitting build tasks for views in keyspace system_traces as storage
service is not initialized
INFO [main] 2018-06-05 09:50:43,300 ColumnFamilyStore.java:406 -
Initializing m2m_auth.user
INFO [main] 2018-06-05 09:50:43,302 ColumnFamilyStore.java:406 -
Initializing m2m_auth.eventsbytag1
INFO [main] 2018-06-05 09:50:43,306 ColumnFamilyStore.java:406 -
Initializing m2m_auth.mail2user
ERROR [main] 2018-06-05 09:50:43,311 CassandraDaemon.java:706 -
Exception encountered during startup
java.lang.IllegalArgumentException: Unknown CF
0f6c8b36-5f34-11e8-a476-c93745f84272
at
org.apache.cassandra.db.Keyspace.getColumnFamilyStore(Keyspace.java:204)
~[apache-cassandra-3.11.0.jar:3.11.0]
at
org.apache.cassandra.db.view.ViewManager.addView(ViewManager.java:152)
~[apache-cassandra-3.11.0.jar:3.11.0]
at
org.apache.cassandra.db.view.ViewManager.reload(ViewManager.java:125)
~[apache-cassandra-3.11.0.jar:3.11.0]
at org.apache.cassandra.db.Keyspace.<init>(Keyspace.java:324)
~[apache-cassandra-3.11.0.jar:3.11.0]
at org.apache.cassandra.db.Keyspace.open(Keyspace.java:127)
~[apache-cassandra-3.11.0.jar:3.11.0]
at org.apache.cassandra.db.Keyspace.open(Keyspace.java:104)
~[apache-cassandra-3.11.0.jar:3.11.0]
at
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:292)
[apache-cassandra-3.11.0.jar:3.11.0]
at
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:600)
[apache-cassandra-3.11.0.jar:3.11.0]
at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:689)
[apache-cassandra-3.11.0.jar:3.11.0]
We do not know how to bring it up again and e.g. stackoverflow only
recommends to delete the node and let it rebuild (which we cannot do as
we've only 1 node currently).
Can anybody drop us a hint ?
What can we do if our node does not start?
We've found an entry in the data directory with the given UUID but at
the time when we restarted the node the whole keyspace was idle for a
couple of hours.
With the problem we're now _very_ concerned about data safety when we
read that it can be a problem if e.g. tables are created/deleted/updated
concurrently. But in our case we did not create/update tables
concurrently and got this problem anyway....
Thanks for any help!
greetings,
Michael
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