You are viewing a plain text version of this content. The canonical link for it is here.
Posted to hdfs-issues@hadoop.apache.org by "Brahma Reddy Battula (JIRA)" <ji...@apache.org> on 2012/11/06 11:12:18 UTC
[jira] [Updated] (HDFS-3731) 2.0 release upgrade must handle blocks
being written from 1.0
[ https://issues.apache.org/jira/browse/HDFS-3731?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Brahma Reddy Battula updated HDFS-3731:
---------------------------------------
Description:
Release 2.0 upgrades must handle blocks being written to (bbw) files from 1.0 release. Problem reported by @Brahma Reddy.
The {{DataNode}} will only have one block pool after upgrading from a 1.x release. (This is because in the 1.x releases, there were no block pools-- or equivalently, everything was in the same block pool). During the upgrade, we should hardlink the block files from the {{blocksBeingWritten}} directory into the {{rbw}} directory of this block pool. Similarly, on {{-finalize}}, we should delete the {{blocksBeingWritten}} directory.
was:
Release 2.0 upgrades must handle blocks being written to (bbw) files from 1.0 release. Problem reported by Brahma Reddy.
The {{DataNode}} will only have one block pool after upgrading from a 1.x release. (This is because in the 1.x releases, there were no block pools-- or equivalently, everything was in the same block pool). During the upgrade, we should hardlink the block files from the {{blocksBeingWritten}} directory into the {{rbw}} directory of this block pool. Similarly, on {{-finalize}}, we should delete the {{blocksBeingWritten}} directory.
> 2.0 release upgrade must handle blocks being written from 1.0
> -------------------------------------------------------------
>
> Key: HDFS-3731
> URL: https://issues.apache.org/jira/browse/HDFS-3731
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node
> Affects Versions: 2.0.0-alpha
> Reporter: Suresh Srinivas
> Assignee: Kihwal Lee
> Priority: Blocker
> Fix For: 0.23.4, 2.0.2-alpha
>
> Attachments: hadoop1-bbw.tgz, HDFS-3731.002.patch, HDFS-3731.003.patch, hdfs-3731.branch-023.patch.txt
>
>
> Release 2.0 upgrades must handle blocks being written to (bbw) files from 1.0 release. Problem reported by @Brahma Reddy.
> The {{DataNode}} will only have one block pool after upgrading from a 1.x release. (This is because in the 1.x releases, there were no block pools-- or equivalently, everything was in the same block pool). During the upgrade, we should hardlink the block files from the {{blocksBeingWritten}} directory into the {{rbw}} directory of this block pool. Similarly, on {{-finalize}}, we should delete the {{blocksBeingWritten}} directory.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira