Any other know incompatibilities (API, protocol, layout) between 0.13 and 0.14?
Owen?  Dhruba?  Others?

On Jul 31, 2007, at 5:13 PM, Raghu Angadi (JIRA) wrote:


[ https://issues.apache.org/jira/browse/HADOOP-1668? page=com.atlassian.jira.plugin.system.issuetabpanels:comment- tabpanel#action_12516833 ]

Raghu Angadi commented on HADOOP-1668:
--------------------------------------

Incompatible changes in HADOOP-1134 :

- dfs.block.size should be a multiple of io.byte.per.checksum. Otherwise new files can not be written. No changes to default config. - DFS layout version changed from -6 to -7. As with any layout change, existing cluster need to be finalized before upgrading the software and cluster should be started with upgrade option after software upgrade. - Datanode RPC protocol version changed from 7 to 8 (this may not be considered incompatible).

I will add a link to uprade guide for this upgrade.

add INCOMPATIBLE CHANGES section to CHANGES.txt for Hadoop 0.14
---------------------------------------------------------------

                Key: HADOOP-1668
URL: https://issues.apache.org/jira/browse/ HADOOP-1668
            Project: Hadoop
         Issue Type: Bug
         Components: documentation
   Affects Versions: 0.14.0
           Reporter: Nigel Daley
           Assignee: Nigel Daley
           Priority: Blocker
            Fix For: 0.14.0


HADOOP-1134 and some other Jira's have introduced incompatible changes into Hadoop 0.14. As per HADOOP-1667 the CHANGES.txt file will include sections for these kind of changes for Hadoop 0.15 and beyond. As a stop gap for 0.14, the CHANGES.txt file needs an INCOMPATIBLE CHANGES section.

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