[
https://issues.apache.org/jira/browse/HDFS-2759?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Aaron T. Myers updated HDFS-2759:
---------------------------------
Description: In HDFS-2709 it was discovered that there's a potential race
wherein edits log files are pre-allocated before the version number is written
into the header of the file. This can cause the NameNode to read an invalid
HDFS layout version, and hence fail to read the edit log file. We should write
the header, then pre-allocate the rest of the file after this point. (was: In
HDFS-2709 it was discovered that there's a potential race wherein edits log
files are pre-allocated before the version number is written into the header of
the file. This can cause the standby to read an invalid version. We should
write the header, then pre-allocate the rest of the file after this point.)
> Pre-allocate HDFS edit log files after writing version number
> -------------------------------------------------------------
>
> Key: HDFS-2759
> URL: https://issues.apache.org/jira/browse/HDFS-2759
> 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
>
> In HDFS-2709 it was discovered that there's a potential race wherein edits
> log files are pre-allocated before the version number is written into the
> header of the file. This can cause the NameNode to read an invalid HDFS
> layout version, and hence fail to read the edit log file. We should write the
> header, then pre-allocate the rest of the file after this point.
--
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
