[ https://issues.apache.org/jira/browse/HDFS-14740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16908828#comment-16908828 ]
Feilong He commented on HDFS-14740: ----------------------------------- An initial patch has been uploaded, contributed by Mo Rui. > HDFS read cache persistence support > ----------------------------------- > > Key: HDFS-14740 > URL: https://issues.apache.org/jira/browse/HDFS-14740 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: Feilong He > Assignee: Feilong He > Priority: Major > Attachments: HDFS-14740.000.patch > > > In HDFS-13762, persistent memory is enabled in HDFS centralized cache > management. Even though persistent memory can persist cache data, for > simplifying the implementation, the previous cache data will be cleaned up > during DataNode restarts. We propose to improve HDFS persistent memory (PM) > cache by taking advantage of PM's data persistence characteristic, i.e., > recovering the cache status when DataNode restarts, thus, cache warm up time > can be saved for user. -- This message was sent by Atlassian JIRA (v7.6.14#76016) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org