nvharikrishna commented on code in PR #4920:
URL: https://github.com/apache/cassandra/pull/4920#discussion_r3588067887
##########
test/distributed/org/apache/cassandra/distributed/test/ring/DecommissionTest.java:
##########
@@ -84,6 +88,42 @@ public void testResumableDecom() throws IOException
}
}
+ @Test
+ public void testOperationModeOnDecomResume() throws Exception
+ {
+ // Node 2's first decomission attempt fails mid-stream (injected by
BB), leaving it in
+ // DECOMISSION_FAILED. On resume, operationMode() must transition back
to LEAVING before
+ // MID_LEAVE is committed. We pause the CMS just before that commit to
assert the mode
+ // in the window where streaming has finished but the epoch has not
yet advanced.
+ try (Cluster cluster = builder().withNodes(3)
+ .withConfig(config ->
config.with(NETWORK, GOSSIP))
+ .withInstanceInitializer(BB::install)
+ .start())
+ {
+ populate(cluster, 0, 100, 1, 2, ConsistencyLevel.QUORUM);
+
+ IInvokableInstance cmsNode = cluster.get(1);
+ IInvokableInstance leavingNode = cluster.get(2);
+
+ leavingNode.nodetoolResult("decommission",
"--force").asserts().failure();
Review Comment:
Ideally running `nodetool decommission` should be sufficient, right?
`--force` flag required here?
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