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https://issues.apache.org/jira/browse/CASSANDRA-4294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13287268#comment-13287268
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Sylvain Lebresne commented on CASSANDRA-4294:
---------------------------------------------
Well, apparently we did broke compatibility of 0.7 -> 1.1. In 1.0, in
{{KSMetadata.fromAvro()}}, we have the following line:
{noformat}
maybeAddReplicationFactor(strategyOptions, ks.strategy_class.toString(),
ks.replication_factor);
{noformat}
which allows compatibility with the old ways where the replication factor was
part of the KsDef directly. In 1.1, we've removed that line (the fromAvro
method has been moved to config/Avro.java).
I think the idea of removing this was that we were fine not supporting direct
upgrade from 0.7 -> 1.1 and force upgrade to 1.0 first. Unfortunately, since
maybeAddReplicationFactor() was called by fromAvro, it means that one would
have to upgrade from 0.7 to 1.0 *and* do some schema upgrade to every keyspace
before upgrading to 1.1. Otherwise, I don't think that the fix of
maybeAddReplicationFactor is persisted (I haven't tested so I'm not 100% sure
but I think that's the case).
So I think we may want to add back the maybeAddReplicationFactor to fromAvro
for now. We can drop that in 1.2 if we want however, since 1.1 will guarantee
that this is persisted since the first thing 1.1 does is to save schema in the
new format.
> Upgrading encounters: 'SimpleStrategy requires a replication_factor strategy
> option.' and refuses to start
> ----------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-4294
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4294
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 1.1.0
> Reporter: Brandon Williams
> Fix For: 1.1.1
>
>
> I've seen this reported quite a few times now:
> {noformat}
> ERROR [main] 2012-05-29 19:33:40,589 AbstractCassandraDaemon.java (line 370)
> Exception encountered during startup
> java.lang.RuntimeException:
> org.apache.cassandra.config.ConfigurationException: SimpleStrategy requires a
> replication_factor strategy option.
> at org.apache.cassandra.db.Table.<init>(Table.java:275)
> at org.apache.cassandra.db.Table.open(Table.java:114)
> at org.apache.cassandra.db.Table.open(Table.java:97)
> at
> org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:204)
> at
> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:353)
> at
> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:106)
> Caused by: org.apache.cassandra.config.ConfigurationException: SimpleStrategy
> requires a replication_factor strategy option.
> at
> org.apache.cassandra.locator.SimpleStrategy.validateOptions(SimpleStrategy.java:71)
> at
> org.apache.cassandra.locator.AbstractReplicationStrategy.createReplicationStrategy(AbstractReplicationStrategy.java:218)
> at org.apache.cassandra.db.Table.createReplicationStrategy(Table.java:295)
> at org.apache.cassandra.db.Table.<init>(Table.java:271)
> ... 5 more
> {noformat}
> The common thread seems to be old lineage, from at least 0.7. 1.0.x works
> fine, but upgrading to 1.1 causes the problem.
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