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Eli Collins commented on HDFS-1108: ----------------------------------- The design doc allows for and discusses multiple approaches, specific implementations are happening in the jiras, eg see HDFS-1975 for sharing NN state. > Log newly allocated blocks > -------------------------- > > Key: HDFS-1108 > URL: https://issues.apache.org/jira/browse/HDFS-1108 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: name-node > Reporter: dhruba borthakur > Assignee: Todd Lipcon > Fix For: HA branch (HDFS-1623) > > Attachments: HDFS-1108.patch, hdfs-1108-habranch.txt, hdfs-1108.txt > > > The current HDFS design says that newly allocated blocks for a file are not > persisted in the NN transaction log when the block is allocated. Instead, a > hflush() or a close() on the file persists the blocks into the transaction > log. It would be nice if we can immediately persist newly allocated blocks > (as soon as they are allocated) for specific files. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira