[ https://issues.apache.org/jira/browse/HDFS-7877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14940676#comment-14940676 ]
Ming Ma commented on HDFS-7877: ------------------------------- Maybe we should try to support persistence for timeout. We can persist the maintenance expiration UTC time via some new mechanism discussed in HDFS-9005. The clock can be out of sync among NNs, but we can accept that given the maintenance timeout precision is in the order of minutes. [~ctrezzo] [~eddyxu], thought? > Support maintenance state for datanodes > --------------------------------------- > > Key: HDFS-7877 > URL: https://issues.apache.org/jira/browse/HDFS-7877 > Project: Hadoop HDFS > Issue Type: New Feature > Reporter: Ming Ma > Attachments: HDFS-7877-2.patch, HDFS-7877.patch, > Supportmaintenancestatefordatanodes-2.pdf, > Supportmaintenancestatefordatanodes.pdf > > > This requirement came up during the design for HDFS-7541. Given this feature > is mostly independent of upgrade domain feature, it is better to track it > under a separate jira. The design and draft patch will be available soon. -- This message was sent by Atlassian JIRA (v6.3.4#6332)