Startup performance suffers when there are many edit log segments -----------------------------------------------------------------
Key: HDFS-2982 URL: https://issues.apache.org/jira/browse/HDFS-2982 Project: Hadoop HDFS Issue Type: Bug Components: name-node Affects Versions: 0.24.0 Reporter: Todd Lipcon Assignee: Todd Lipcon Priority: Critical For every one of the edit log segments, it seems like we are calling listFiles on the edit log directory inside of {{findMaxTransaction}}. This is killing performance, especially when there are many log segments and the directory is stored on NFS. It is taking several minutes to start up the NN when there are several thousand log segments present. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira