Ethan Li created STORM-3679:
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Summary: misuse of nodeId as hostname in LoadAwareShuffleGrouping
Key: STORM-3679
URL: https://issues.apache.org/jira/browse/STORM-3679
Project: Apache Storm
Issue Type: Bug
Reporter: Ethan Li
LoadAwareShuffleGrouping misuses nodeId as the hostname and it causes
consistent invalid DNS queries for "hostnames" like
2a1f2cf3-c701-4621-9e93-640b4e63be48-<ip>.
This causes excessive unnecessary loads on nscd and DNS. Also because of this
bug, every target tasks will be treated as at least RACK_LOCAL because if an ip
address can't be determined, YahooDNSToSwitchMapping treats it as DEFAULT_RACK.
This doesn't impact WORKER_LOCAL and HOST_LOCAL though.
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