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Brahma Reddy Battula commented on HDFS-8161: -------------------------------------------- [~vinayrpet] , [~jnp] and [~arpitagarwal] any thoughts on this..? As there is no checksum verification from the ZK Side and seems to be no one interested in checksum feature in ZK side (since I did not seen any comment in ZOOKEEPER-2175 ),Can we have some mechanism here..? > Both Namenodes are in standby State > ----------------------------------- > > Key: HDFS-8161 > URL: https://issues.apache.org/jira/browse/HDFS-8161 > Project: Hadoop HDFS > Issue Type: Bug > Components: auto-failover > Affects Versions: 2.6.0 > Reporter: Brahma Reddy Battula > Assignee: Brahma Reddy Battula > Attachments: ACTIVEBreadcumb and StandbyElector.txt > > > Suspected Scenario: > ================ > Start cluster with three Nodes. > Reboot Machine where ZKFC is not running..( Here Active Node ZKFC should open > session with this ZK ) > Now ZKFC ( Active NN's ) session expire and try re-establish connection with > another ZK...Bythe time ZKFC ( StndBy NN's ) will try to fence old active > and create the active Breadcrumb and Makes SNN to active state.. > But immediately it fence to standby state.. ( Here is the doubt) > Hence both will be in standby state.. -- This message was sent by Atlassian JIRA (v6.3.4#6332)