[CASSANDRA-16301] upgrade from C* 3.11.9 to 4.0-beta3 fails if 3.11.9 is configured with OldNetworkTopologyStrategy

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.0-beta4, 4.0
• Complexity: Low Hanging Fruit
• Platform: All
• Since Version: 4.0-alpha3

Source Control Link

https://github.com/apache/cassandra/commit/47278ae3765fcf1532f20b0ade3f36f08a089630

Test and Documentation Plan

The changes do not require additional tests.

• Assignee: Benjamin Lerer
• Reporter: Yongle Zhang

Authors

Benjamin Lerer

Reviewers

Erick Ramirez (deprecated)

• Created: 25/Nov/20 03:08
• Updated: 03/Jan/21 16:58
• Resolved: 26/Nov/20 13:08

Description

When we upgrade Cassandra from 3.11.9 to 4.0-beta3, if the old cluster (3.11.9) is configured with OldNetworkTopologyStrategy, 4.0-beta3 Cassandra fails to start with the following exception: 

 

ERROR [main] 2020-11-24 22:49:33,423 CassandraDaemon.java:278 - Error while loading schema:
org.apache.cassandra.exceptions.ConfigurationException: Unable to find replication strategy class 'org.apache.cassandra.locator.OldNetworkTopologyStrategy'
        at org.apache.cassandra.utils.FBUtilities.classForName(FBUtilities.java:720)
        at org.apache.cassandra.locator.AbstractReplicationStrategy.getClass(AbstractReplicationStrategy.java:422)
        at org.apache.cassandra.schema.ReplicationParams.fromMapWithDefaults(ReplicationParams.java:90)
        at org.apache.cassandra.schema.ReplicationParams.fromMap(ReplicationParams.java:82)
        at org.apache.cassandra.schema.KeyspaceParams.create(KeyspaceParams.java:64)
        at org.apache.cassandra.schema.SchemaKeyspace.fetchKeyspaceParams(SchemaKeyspace.java:971)
        at org.apache.cassandra.schema.SchemaKeyspace.fetchKeyspace(SchemaKeyspace.java:956)
        at org.apache.cassandra.schema.SchemaKeyspace.fetchKeyspacesWithout(SchemaKeyspace.java:949)
        at org.apache.cassandra.schema.SchemaKeyspace.fetchNonSystemKeyspaces(SchemaKeyspace.java:859)
        at org.apache.cassandra.schema.Schema.loadFromDisk(Schema.java:100)
        at org.apache.cassandra.schema.Schema.loadFromDisk(Schema.java:89)
        at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:274)
        at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:671)
        at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:795)
Caused by: java.lang.ClassNotFoundException: org.apache.cassandra.locator.OldNetworkTopologyStrategy
        at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:264)
        at org.apache.cassandra.utils.FBUtilities.classForName(FBUtilities.java:716)
        ... 13 common frames omitted
Exception (org.apache.cassandra.exceptions.ConfigurationException) encountered during startup: Unable to find replication strategy class 'org.apache.cassandra.locator.OldNetworkTopologyStrategy'

 

 

Issue Links

• is related to: CASSANDRA-13990 Remove OldNetworkTopologyStrategy