Yifan Cai created CASSANDRA-16246:
-------------------------------------
Summary: Unexpected warning "Ignoring Unrecognized strategy
option" for NetworkTopologyStrategy when restarting
Key: CASSANDRA-16246
URL: https://issues.apache.org/jira/browse/CASSANDRA-16246
Project: Cassandra
Issue Type: Bug
Components: Observability/Logging
Reporter: Yifan Cai
Assignee: Yifan Cai
During restarting, bunch of warning messages like
"AbstractReplicationStrategy.java:364 - Ignoring Unrecognized strategy option
{datacenter2} passed to NetworkTopologyStrategy for keyspace
distributed_test_keyspace" are logged.
The warnings are not expected since the mentioned DC exist.
It seems to be caused by the improper order during startup, so that when
opening keyspaces it is unaware of DCs.
The warning can be reproduced using the test below.
{code:java}
@Test
public void testEmitsWarningsForNetworkTopologyStategyConfigOnRestart() throws
Exception {
int nodesPerDc = 2;
try (Cluster cluster = builder().withConfig(c -> c.with(GOSSIP, NETWORK))
.withRacks(2, 1, nodesPerDc)
.start()) {
cluster.schemaChange("CREATE KEYSPACE " + KEYSPACE +
" WITH replication = {'class':
'NetworkTopologyStrategy', " +
"'datacenter1' : " + nodesPerDc + ", 'datacenter2'
: " + nodesPerDc + " };");
cluster.get(2).nodetool("flush");
System.out.println("Stop node 2 in datacenter 1");
cluster.get(2).shutdown().get();
System.out.println("Start node 2 in datacenter 1");
cluster.get(2).startup();
List<String> result = cluster.get(2).logs().grep("Ignoring Unrecognized
strategy option \\{datacenter2\\}").getResult();
Assert.assertFalse(result.isEmpty());
}
}
{code}
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