[ https://issues.apache.org/jira/browse/HDFS-10940?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kihwal Lee updated HDFS-10940: ------------------------------ Resolution: Fixed Hadoop Flags: Reviewed Fix Version/s: 3.0.0-alpha2 2.8.0 Status: Resolved (was: Patch Available) Committed this to trunk, branch-2 and branch-2.8. > Reduce performance penalty of block caching when not used > --------------------------------------------------------- > > Key: HDFS-10940 > URL: https://issues.apache.org/jira/browse/HDFS-10940 > Project: Hadoop HDFS > Issue Type: Improvement > Components: namenode > Affects Versions: 2.7 > Reporter: Daryn Sharp > Assignee: Daryn Sharp > Fix For: 2.8.0, 3.0.0-alpha2 > > Attachments: HDFS-10940.patch > > > For every block location generated, the CacheManager will create a junk > object for a hash lookup of cached locations. If there are no cached blocks, > none of this is required. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org