Ngone51 commented on issue #24569: [SPARK-23191][CORE] Warn rather than terminate when duplicate worker register happens URL: https://github.com/apache/spark/pull/24569#issuecomment-492282855 > When does the first registration happen? in which step? When master B takes over from master A (or say, elected to be a new active master), it will recovery all info(including registered workers) from master A. The recovery process would trigger first registration silently. I'll update the description, thanks.
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