[ https://issues.apache.org/jira/browse/HDFS-1114?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tsz Wo (Nicholas), SZE updated HDFS-1114: ----------------------------------------- Status: Patch Available (was: Open) > Reducing NameNode memory usage by an alternate hash table > --------------------------------------------------------- > > Key: HDFS-1114 > URL: https://issues.apache.org/jira/browse/HDFS-1114 > Project: Hadoop HDFS > Issue Type: Improvement > Components: name-node > Reporter: Tsz Wo (Nicholas), SZE > Assignee: Tsz Wo (Nicholas), SZE > Attachments: GSet20100525.pdf, gset20100608.pdf, > h1114_20100607.patch, h1114_20100614b.patch, h1114_20100615.patch > > > NameNode uses a java.util.HashMap to store BlockInfo objects. When there are > many blocks in HDFS, this map uses a lot of memory in the NameNode. We may > optimize the memory usage by a light weight hash table implementation. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.