[ https://issues.apache.org/jira/browse/HDFS-1801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon updated HDFS-1801: ------------------------------ Attachment: hdfs-1801.txt Attached patch passes most of the existing tests. The BackupNode is still in a broken state on the branch, but will be cleaned up later. > Remove use of timestamps to identify checkpoints and logs > --------------------------------------------------------- > > Key: HDFS-1801 > URL: https://issues.apache.org/jira/browse/HDFS-1801 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: name-node > Affects Versions: Edit log branch (HDFS-1073) > Reporter: Todd Lipcon > Assignee: Todd Lipcon > Fix For: Edit log branch (HDFS-1073) > > Attachments: hdfs-1801.txt > > > Currently, the NameNode validates checkpoint uploads by using timestamps > associated with checkpoints and edit logs. However, now that we have > transaction IDs that uniquely identify each point in time in the history of a > namespace, it is more robust to simply use transaction IDs to identify images > and edits. > This JIRA is to remove the use of editsTime and checkpointTime and replace it > with: > * {{lastCheckpointTxId}} - the highest transaction ID reflected in the most > recently saved fsimage file > * {{lastLogRollTxId}} - the highest transaction ID in {{edits}} when > {{rollFsImage}} was called by the checkpointing node. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira