[ http://issues.apache.org/jira/browse/HADOOP-334?page=comments#action_12447587 ] Raghu Angadi commented on HADOOP-334: -------------------------------------
Why would we have to deal with multiple edit entries in this case? I thought the following operation would be done under globalLock: at the end of checkpointing we : close the new image file, remove (or move) old image file and old edit logs. This is just for my understanding.. I know Milind is working on different proposal. > Redesign the dfs namespace datastructures to be copy on write > ------------------------------------------------------------- > > Key: HADOOP-334 > URL: http://issues.apache.org/jira/browse/HADOOP-334 > Project: Hadoop > Issue Type: Improvement > Components: dfs > Affects Versions: 0.4.0 > Reporter: Owen O'Malley > Assigned To: Konstantin Shvachko > > The namespace datastructures should be copy on write so that the namespace > does not need to be completely locked down from user changes while the > checkpoint is being made. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
