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Rui Mo edited comment on HDFS-14740 at 8/21/19 9:37 AM: -------------------------------------------------------- Fixed FindBugs and checkstyle issues in [^HDFS-14740.001.patch]. was (Author: rui mo): Fixed FindBugs and checkstyle issues in HDFS-14740.001.patch. > 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: Rui Mo > Priority: Major > Attachments: HDFS-14740.000.patch, HDFS-14740.001.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 (v8.3.2#803003) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org