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Steve Loughran commented on HADOOP-9517: ---------------------------------------- Karthik, -source tree compatibility Yes, why I say {{patch}} I mean directory layout -we already have differences there between 1.x and 2.x; new changes are inevitable in future. Source code applicability can change and we must not make any promises there. A policy here could be minor versions: # No planned changes in source tree layout, though it may happen # Source files may be added, deleted and moved # Source files may change so that patches no longer cleanly apply. major versions: # all of the above # a complete refactoring of the source tree, build and test toolings may happen. > Define Hadoop Compatibility > --------------------------- > > Key: HADOOP-9517 > URL: https://issues.apache.org/jira/browse/HADOOP-9517 > Project: Hadoop Common > Issue Type: Bug > Components: documentation > Reporter: Arun C Murthy > Assignee: Karthik Kambatla > Attachments: hadoop-9517.patch, hadoop-9517.patch, hadoop-9517.patch, > hadoop-9517.patch > > > As we get ready to call hadoop-2 stable we need to better define 'Hadoop > Compatibility'. > http://wiki.apache.org/hadoop/Compatibility is a start, let's document > requirements clearly and completely. -- 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