[ https://issues.apache.org/jira/browse/HDFS-855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jakob Homan resolved HDFS-855. ------------------------------ Resolution: Duplicate > namenode can save images in parallel to all directories in fs.name.dir > ---------------------------------------------------------------------- > > Key: HDFS-855 > URL: https://issues.apache.org/jira/browse/HDFS-855 > Project: Hadoop HDFS > Issue Type: Improvement > Components: name-node > Reporter: dhruba borthakur > > The namenode restart times can be reduced if the namenode can save its image > to multiple directories (specified in fs.name.dir) in parallel. > The NN has a 6 GB fsimage and 1 MB edits file. The NN needed 10 minutes to > load fsimage/edits into memory. It needs 7 minutes to read the 6 GB image. > There are two directories in fs.name.dir. it takes about 2 minute to save > the image into first directory and another 2 minutes to save the image to the > second directory. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.