[ https://issues.apache.org/jira/browse/HDFS-11942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrew Wang updated HDFS-11942: ------------------------------- Fix Version/s: (was: 3.0.0-beta1) 3.0.0 > make new chooseDataNode policy work in more operation like seek, fetch > ------------------------------------------------------------------------ > > Key: HDFS-11942 > URL: https://issues.apache.org/jira/browse/HDFS-11942 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: hdfs-client > Affects Versions: 2.6.0, 2.7.0, 3.0.0-alpha3 > Reporter: Fangyuan Deng > Fix For: 3.0.0 > > Attachments: HDFS-11942.0.patch, HDFS-11942.1.patch, > ssd-first-disable(default).png, ssd-first-enable.png > > > in default policy, if a file is ONE_SSD, client will prior read the local > disk replica rather than the remote ssd replica. > but now, the pci-e SSD and 10G ethernet make remote read SSD more faster than > the local disk. > HDFS-9666 give us a patch, but the code is not complete and not updated for > a long time. > this sub-task issue give a complete patch and > we have tested on three machines [ 32 core cpu, 128G mem , 1000M network, > 1.2T HDD, 800G SSD(intel P3600) ]. > with this feather, throughput of hbase table(ONE_SSD) is double of which > without this feather -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org