hadoop-hdfs-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-8127) NameNode Failover during HA upgrade can cause DataNode to finalize upgrade
Date Fri, 10 Apr 2015 17:28:12 GMT
Jing Zhao created HDFS-8127:
-------------------------------

             Summary: 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


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)

Mime
View raw message