unnecessary locking in hint path due to InetAddress.getLocalhost()
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Key: CASSANDRA-3387
URL: https://issues.apache.org/jira/browse/CASSANDRA-3387
Project: Cassandra
Issue Type: Bug
Reporter: Yang Yang
Priority: Minor
in tests we found locking contention also due to the following
Stacks at 01:49:19 PM (uptime 10:54)
MutationStage:62 [BLOCKED] CPU time: 0:06
java.net.InetAddress.getLocalHost()
org.apache.cassandra.utils.UUIDGen.getClockSeqAndNode()
org.apache.cassandra.utils.UUIDGen.createTimeUUIDBytes(long)
org.apache.cassandra.utils.UUIDGen.getTimeUUIDBytes()
org.apache.cassandra.db.RowMutation.hintFor(RowMutation, ByteBuffer)
org.apache.cassandra.service.StorageProxy$4.run()
java.lang.Thread.run()
we can easily change every getLocalHost() call to use a cached value
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