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 "Aaron T. Myers (Created) (JIRA)" <ji...@apache.org> on 2012/01/16 07:45:40 UTC
[jira] [Created] (HDFS-2794) HA: Active NN may purge edit log files
before standby NN has a chance to read them
HA: Active NN may purge edit log files before standby NN has a chance to read them
----------------------------------------------------------------------------------
Key: HDFS-2794
URL: https://issues.apache.org/jira/browse/HDFS-2794
Project: Hadoop HDFS
Issue Type: Sub-task
Components: ha, name-node
Affects Versions: HA branch (HDFS-1623)
Reporter: Aaron T. Myers
Assignee: Aaron T. Myers
Given that the active NN is solely responsible for purging finalized edit log segments, and given that the active NN has no way of knowing when the standby reads edit logs, it's possible that the standby NN could fail to read all edits it needs before the active purges the files.
--
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
[jira] [Resolved] (HDFS-2794) HA: Active NN may purge edit log
files before standby NN has a chance to read them
Posted by "Todd Lipcon (Resolved) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HDFS-2794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon resolved HDFS-2794.
-------------------------------
Resolution: Fixed
Fix Version/s: HA branch (HDFS-1623)
Hadoop Flags: Reviewed
Thanks for the reviews, committed to the HA branch
> HA: Active NN may purge edit log files before standby NN has a chance to read them
> ----------------------------------------------------------------------------------
>
> Key: HDFS-2794
> URL: https://issues.apache.org/jira/browse/HDFS-2794
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, name-node
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Aaron T. Myers
> Assignee: Todd Lipcon
> Fix For: HA branch (HDFS-1623)
>
> Attachments: hdfs-2794.txt, hdfs-2794.txt
>
>
> Given that the active NN is solely responsible for purging finalized edit log segments, and given that the active NN has no way of knowing when the standby reads edit logs, it's possible that the standby NN could fail to read all edits it needs before the active purges the files.
--
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