[ https://issues.apache.org/jira/browse/HDFS-10867?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ewan Higgs updated HDFS-10867: ------------------------------ Attachment: Block Bit Field Allocation of Provided Storage.pdf > Block Bit Field Allocation of Provided Storage > ---------------------------------------------- > > Key: HDFS-10867 > URL: https://issues.apache.org/jira/browse/HDFS-10867 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: hdfs > Reporter: Ewan Higgs > Attachments: Block Bit Field Allocation of Provided Storage.pdf > > > We wish to design and implement the following related features for provided > storage: > # Dynamic mounting of provided storage within a Namenode (mount, unmount) > # Mount multiple provided storage systems on a single Namenode. > # Support updates to the provided storage system without having to regenerate > an fsimg. > A mount in the namespace addresses a corresponding set of block data. When > unmounted, any block data associated with the mount becomes invalid and > (eventually) unaddressable in HDFS. As with erasure-coded blocks, efficient > unmounting requires that all blocks with that attribute be identifiable by > the block management layer > In this subtask, we focus on changes and conventions to the block management > layer. Namespace operations are covered in a separate subtask. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org