[ https://issues.apache.org/jira/browse/HDFS-4408?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Loughran resolved HDFS-4408. ---------------------------------- Resolution: Duplicate Release Note: Duplicate of HDFS-1312; closing. of course, HDFS-1312 is still open > Balancer for DataNode's Volumes > --------------------------------- > > Key: HDFS-4408 > URL: https://issues.apache.org/jira/browse/HDFS-4408 > Project: Hadoop HDFS > Issue Type: Improvement > Components: datanode > Reporter: Li Junjun > > After a long time , I found some datanode : > Volume a,b,c,d their and total space and configurations are same. > but a used 100% , b c d are not , may be casued by write and delete files > mega times . > so it'll be better to write a balancer for datanode's volumes to improve the > cluster's write performance; > before balance : 4 write request ,3 volumes handles. > after balance : 4 write request ,4 volumes handles. > and in most cases, compute follows write , and it'll improve the read > performance; -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira