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Posted to hdfs-dev@hadoop.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2010/11/30 02:19:11 UTC
[jira] Created: (HDFS-1521) Persist transaction ID on disk between
NN restarts
Persist transaction ID on disk between NN restarts
--------------------------------------------------
Key: HDFS-1521
URL: https://issues.apache.org/jira/browse/HDFS-1521
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Todd Lipcon
Assignee: Todd Lipcon
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[jira] [Reopened] (HDFS-1521) Persist transaction ID on disk
between NN restarts
Posted by "Todd Lipcon (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HDFS-1521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon reopened HDFS-1521:
-------------------------------
For some reason this is causing TestBackupNode to fail - surprised we didn't see this in the Hudson QA run.
Reverting and reopening to address.
> Persist transaction ID on disk between NN restarts
> --------------------------------------------------
>
> Key: HDFS-1521
> URL: https://issues.apache.org/jira/browse/HDFS-1521
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node
> Affects Versions: 0.22.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 0.23.0
>
> Attachments: FSImageFormat.patch, HDFS-1521.diff, HDFS-1521.diff, HDFS-1521.diff, HDFS-1521.diff, HDFS-1521.diff, hdfs-1521.3.txt, hdfs-1521.4.txt, hdfs-1521.5.txt, hdfs-1521.txt, hdfs-1521.txt, hdfs-1521.txt
>
>
> For HDFS-1073 and other future work, we'd like to have the concept of a transaction ID that is persisted on disk with the image/edits. We already have this concept in the NameNode but it resets to 0 on restart. We can also use this txid to replace the _checkpointTime_ field, I believe.
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[jira] [Resolved] (HDFS-1521) Persist transaction ID on disk
between NN restarts
Posted by "Todd Lipcon (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HDFS-1521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon resolved HDFS-1521.
-------------------------------
Resolution: Fixed
Committed to the HDFS-1073 branch. We will address the BackupNode issues mentioned by Ivan later on in this branch before merge into trunk.
> Persist transaction ID on disk between NN restarts
> --------------------------------------------------
>
> Key: HDFS-1521
> URL: https://issues.apache.org/jira/browse/HDFS-1521
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node
> Affects Versions: 0.22.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: Edit log branch (HDFS-1073)
>
> Attachments: FSImageFormat.patch, HDFS-1521.diff, HDFS-1521.diff, HDFS-1521.diff, HDFS-1521.diff, HDFS-1521.diff, hdfs-1521.3.txt, hdfs-1521.4.txt, hdfs-1521.5.txt, hdfs-1521.txt, hdfs-1521.txt, hdfs-1521.txt
>
>
> For HDFS-1073 and other future work, we'd like to have the concept of a transaction ID that is persisted on disk with the image/edits. We already have this concept in the NameNode but it resets to 0 on restart. We can also use this txid to replace the _checkpointTime_ field, I believe.
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