[ https://issues.apache.org/jira/browse/HDFS-1435?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hairong Kuang resolved HDFS-1435. --------------------------------- Resolution: Fixed Release Note: This provides an option to store fsimage compressed. The layout version is bumped to -25. The user could configure if s/he wants the fsimage to be compressed or not and which codec to use. By default the fsimage is not compressed. Hadoop Flags: [Incompatible change, Reviewed] I've committed this! > Provide an option to store fsimage compressed > --------------------------------------------- > > Key: HDFS-1435 > URL: https://issues.apache.org/jira/browse/HDFS-1435 > Project: Hadoop HDFS > Issue Type: Improvement > Components: name-node > Affects Versions: 0.22.0 > Reporter: Hairong Kuang > Assignee: Hairong Kuang > Fix For: 0.22.0 > > Attachments: checkpoint-limitandcompress.patch, > trunkImageCompress.patch, trunkImageCompress1.patch, > trunkImageCompress2.patch, trunkImageCompress3.patch, > trunkImageCompress4.patch > > > Our HDFS has fsimage as big as 20G bytes. It consumes a lot of network > bandwidth when secondary NN uploads a new fsimage to primary NN. > If we could store fsimage compressed, the problem could be greatly alleviated. > I plan to provide a new configuration hdfs.image.compressed with a default > value of false. If it is set to be true, fsimage is stored as compressed. > The fsimage will have a new layout with a new field "compressed" in its > header, indicating if the namespace is stored compressed or not. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.