You are viewing a plain text version of this content. The canonical link for it is here.
Posted to hdfs-dev@hadoop.apache.org by "Todd Lipcon (Created) (JIRA)" <ji...@apache.org> on 2012/02/22 01:44:48 UTC
[jira] [Created] (HDFS-2982) Startup performance suffers when there
are many edit log segments
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