Steve Vaughan created HDFS-16691: ------------------------------------ Summary: Use quorum instead of requiring full JN set for NN format Key: HDFS-16691 URL: https://issues.apache.org/jira/browse/HDFS-16691 Project: Hadoop HDFS Issue Type: Improvement Components: namenode Environment: Demonstrated in a Kubernetes environment running Java 11. Using an HA configuration: # Start new cluster, but short 1 JN (minimum quorum, and the missing JN won’t resolve). VERIFY: - NN formats the 2 existing JN and stabilizes - Messages show sync between JN-0 and JN-1, and NN -> JN # Scale JN stateful set to add missing JN. NOTE: Requires HDFS-16690 Reporter: Steve Vaughan
Currently a format request fails if any of the JournalNodes is unresolvable. For dynamic cluster environments where a JournalNode may not be available during the initial formatting step but JournalNodes can self-heal, it makes sense to allow the format to succeed when a quorum of JournalNodes is available. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org