[#HADOOP-702] DFS Upgrade Proposal

Hadoop Common

DFS Upgrade Proposal

Created: 09/Nov/06 03:21 AM Updated: 08/Jul/09 04:42 PM

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Component/s:

None

Affects Version/s:

None

Fix Version/s:

0.13.0

Time Tracking:

Not Specified

File Attachments:

File Name	Date Attached	Attached By	Size
DFSUpgradeProposal3.html	2007-01-04 08:27 PM	Konstantin Shvachko	53 kB
FSStateTransition6.htm	2007-03-21 11:13 PM	Konstantin Shvachko	97 kB
FSStateTransitionApr03.patch	2007-04-03 09:09 PM	Konstantin Shvachko	239 kB
Manual-TestCases-HdfsConversion.txt	2007-05-23 09:21 PM	Nigel Daley	5 kB
TestPlan-HdfsUpgrade.html	2007-02-15 11:20 PM	Nigel Daley	27 kB
TestPlan-HdfsUpgrade.html	2007-01-06 01:18 AM	Nigel Daley	27 kB
TestPlan-HdfsUpgrade.html	2006-12-08 10:31 PM	Nigel Daley	20 kB

Issue Links:

Reference

This issue relates to:

HDFS-293 Remove code related to conversion of name-node and data-node storage directories to the format introduced in hadoop 0.13

Resolution Date:

03/Apr/07 09:39 PM

Description

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Currently the DFS cluster upgrade procedure is manual.
http://wiki.apache.org/lucene-hadoop/Hadoop_Upgrade
It is rather complicated and does not guarantee data recoverability in case of software errors or administrator mistakes.
This is a description of utilities that make the upgrade process almost automatic and minimize chance of loosing or corrupting data.
Please see the attached html file for details.

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