[ https://issues.apache.org/jira/browse/HDFS-8127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vinod Kumar Vavilapalli updated HDFS-8127: ------------------------------------------ Labels: 2.6.1-candidate (was: ) > NameNode Failover during HA upgrade can cause DataNode to finalize upgrade > -------------------------------------------------------------------------- > > Key: HDFS-8127 > URL: https://issues.apache.org/jira/browse/HDFS-8127 > Project: Hadoop HDFS > Issue Type: Bug > Components: ha > Affects Versions: 2.4.0 > Reporter: Jing Zhao > Assignee: Jing Zhao > Priority: Blocker > Labels: 2.6.1-candidate > Fix For: 2.7.1 > > Attachments: HDFS-8127.000.patch, HDFS-8127.001.patch > > > Currently for HA upgrade (enabled by HDFS-5138), we use {{-bootstrapStandby}} > to initialize the standby NameNode. The standby NameNode does not have the > {{previous}} directory thus it does not know that the cluster is in the > upgrade state. If NN failover happens, as response of block reports, the new > ANN will tell DNs to finalize the upgrade thus make it impossible to rollback > again. -- This message was sent by Atlassian JIRA (v6.3.4#6332)