Dikang Gu created CASSANDRA-12990:
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Summary: More fixes to the TokenAllocator
Key: CASSANDRA-12990
URL: https://issues.apache.org/jira/browse/CASSANDRA-12990
Project: Cassandra
Issue Type: Bug
Reporter: Dikang Gu
Assignee: Dikang Gu
Fix For: 3.12
CASSANDRA-12983 fixes the NoReplicationTokenAllocator in the replication factor
equals 0 case.
We find one more problem that, in our big cluster, ~1000 nodes, the Gossip
takes longer time to settle down, so the TokenAllocator may throw NPE when
trying to find the dc rack information from the Gossip metadata, in the
getStrategy function.
This patch will fix it, it does two things:
1. wait gossip to settle down before trying to allocating tokens.
2. for replication factor equals 0 or 1 case, we do not need to check the
topology for rack information, since each node will be treated separately.
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