[ https://issues.apache.org/jira/browse/HDFS-1850?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Eli Collins updated HDFS-1850: ------------------------------ Status: Open (was: Patch Available) > DN should transmit absolute failed volume count rather than increments to the > NN > -------------------------------------------------------------------------------- > > Key: HDFS-1850 > URL: https://issues.apache.org/jira/browse/HDFS-1850 > Project: Hadoop HDFS > Issue Type: Bug > Components: data-node, name-node > Reporter: Eli Collins > Assignee: Eli Collins > Fix For: 0.22.0 > > Attachments: hdfs-1850-1.patch, hdfs-1850-2.patch, hdfs-1850-3.patch, > hdfs-1850-4.patch, hdfs-1850-5.patch, hdfs-1850-6.patch, hdfs-1850-7.patch > > > The API added in HDFS-811 for the DN to report volume failures to the NN is > "inc(DN)". However the given sequence of events will result in the NN > forgetting about reported failed volumes: > # DN loses a volume and reports it > # NN restarts > # DN re-registers to the new NN > A more robust interface would be to have the DN report the total number of > volume failures to the NN each heart beat (the same way other volume state is > transmitted). > This will likely be an incompatible change since it requires changing the > Datanode protocol. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira