[ https://issues.apache.org/jira/browse/HDFS-9666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16383083#comment-16383083 ]
Jiandan Yang commented on HDFS-9666: ------------------------------------- upload v1 patch based trunk > Enable hdfs-client to read even remote SSD/RAM prior to local disk replica to > improve random read > ------------------------------------------------------------------------------------------------- > > Key: HDFS-9666 > URL: https://issues.apache.org/jira/browse/HDFS-9666 > Project: Hadoop HDFS > Issue Type: Improvement > Components: hdfs-client > Affects Versions: 2.6.0, 2.7.0 > Reporter: ade > Assignee: ade > Priority: Major > Attachments: HDFS-9666.0.patch, HDFS-9666.001.patch > > > We want to improve random read performance of HDFS for HBase, so enabled the > heterogeneous storage in our cluster. But there are only ~50% of datanode & > regionserver hosts with SSD. we can set hfile with only ONE_SSD not ALL_SSD > storagepolicy and the regionserver on none-SSD host can only read the local > disk replica . So we developed this feature in hdfs client to read even > remote SSD/RAM prior to local disk replica. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org