[ https://issues.apache.org/jira/browse/HDFS-7531?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Lei (Eddy) Xu updated HDFS-7531: -------------------------------- Summary: Improve the concurrent access on FsVolumeList (was: Improve the concurrent access of FsVolumeList) > Improve the concurrent access on FsVolumeList > --------------------------------------------- > > Key: HDFS-7531 > URL: https://issues.apache.org/jira/browse/HDFS-7531 > Project: Hadoop HDFS > Issue Type: Improvement > Components: datanode > Affects Versions: 2.6.0 > Reporter: Lei (Eddy) Xu > Assignee: Lei (Eddy) Xu > Attachments: HDFS-7531.000.patch > > > {{FsVolumeList}} uses {{synchronized}} to protect the update on > {{FsVolumeList#volumes}}, while various operations (e.g., {{checkDirs()}}, > {{getAvailable()}}) iterate {{volumes}} without protection. > This JIRA proposes to use {{AtomicReference}} to encapture {{volumes}} to > provide better concurrent access. -- This message was sent by Atlassian JIRA (v6.3.4#6332)