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https://issues.apache.org/jira/browse/CASSANDRA-7582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14076202#comment-14076202
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Jonathan Ellis commented on CASSANDRA-7582:
-------------------------------------------
How do we know what's in the system ks when all we have is a cfid that doesn't
match anything known?
More generally, I'm not sure how "stop on unknown cfid" is going to be a useful
feature. It's definitely going to happen if you replay a commitlog after
dropping a table, for instance, if we have an unclean shutdown in between.
This is normal behavior and not a bug per se, so whacking users and not
starting up is definitely antisocial.
On the other hand I can't picture a scenario where the user *can* take
meaningful action based on failing startup here. Put another way, ignoring the
mutations is the Right Thing to do in every scenario I can think of.
So I propose we just log it at info and ignore.
> 2.1 multi-dc upgrade errors
> ---------------------------
>
> Key: CASSANDRA-7582
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7582
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Ryan McGuire
> Assignee: Benedict
> Priority: Critical
> Fix For: 2.1.0
>
>
> Multi-dc upgrade [was working from 2.0 -> 2.1 fairly
> recently|http://cassci.datastax.com/job/cassandra_upgrade_dtest/55/testReport/upgrade_through_versions_test/TestUpgrade_from_cassandra_2_0_latest_tag_to_cassandra_2_1_HEAD/],
> but is currently failing.
> Running
> upgrade_through_versions_test.py:TestUpgrade_from_cassandra_2_0_HEAD_to_cassandra_2_1_HEAD.bootstrap_multidc_test
> I get the following errors when starting 2.1 upgraded from 2.0:
> {code}
> ERROR [main] 2014-07-21 23:54:20,862 CommitLog.java:143 - Commit log replay
> failed due to replaying a mutation for a missing table. This error can be
> ignored by providing -Dcassandra.commitlog.stop_on_missing_tables=false on
> the command line
> ERROR [main] 2014-07-21 23:54:20,869 CassandraDaemon.java:474 - Exception
> encountered during startup
> java.lang.RuntimeException:
> org.apache.cassandra.db.UnknownColumnFamilyException: Couldn't find
> cfId=a1b676f3-0c5d-3276-bfd5-07cf43397004
> at
> org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:300)
> [main/:na]
> at
> org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:457)
> [main/:na]
> at
> org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:546)
> [main/:na]
> Caused by: org.apache.cassandra.db.UnknownColumnFamilyException: Couldn't
> find cfId=a1b676f3-0c5d-3276-bfd5-07cf43397004
> at
> org.apache.cassandra.db.ColumnFamilySerializer.deserializeCfId(ColumnFamilySerializer.java:164)
> ~[main/:na]
> at
> org.apache.cassandra.db.ColumnFamilySerializer.deserialize(ColumnFamilySerializer.java:97)
> ~[main/:na]
> at
> org.apache.cassandra.db.Mutation$MutationSerializer.deserializeOneCf(Mutation.java:353)
> ~[main/:na]
> at
> org.apache.cassandra.db.Mutation$MutationSerializer.deserialize(Mutation.java:333)
> ~[main/:na]
> at
> org.apache.cassandra.db.commitlog.CommitLogReplayer.recover(CommitLogReplayer.java:365)
> ~[main/:na]
> at
> org.apache.cassandra.db.commitlog.CommitLogReplayer.recover(CommitLogReplayer.java:98)
> ~[main/:na]
> at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:137)
> ~[main/:na]
> at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:115)
> ~[main/:na]
> {code}
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