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https://issues.apache.org/jira/browse/HADOOP-2916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12600842#action_12600842
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Doug Cutting commented on HADOOP-2916:
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> Let's go ahead and do this on monday next week. Does that sound reasonable to
> people?
Next Monday is 5 days before a planned release branch, right?
I'd still rather see this done at the same time as HADOOP-2885, earlier in a
release cycle. I see no point in breaking patches twice: if we're going to
re-organize the codebase, we should do it all at once, rather than dragging out
the pain. But, as it appears I am alone in this belief, I will not veto this.
BTW, the description of this issue proposes to change the jar files, but the
attached patch does not do that: all that it does is re-arrange source code.
Given the late point in the release cycle, I think this is a wise choice.
Restructuring the jar files may have substantial impacts, and ought to be done
in trunk earlier in a release cycle.
> Refactor src structure, but leave package structure alone
> ---------------------------------------------------------
>
> Key: HADOOP-2916
> URL: https://issues.apache.org/jira/browse/HADOOP-2916
> Project: Hadoop Core
> Issue Type: Sub-task
> Components: dfs
> Reporter: Sanjay Radia
> Assignee: Raghu Angadi
> Attachments: convert-patch.sed, convert-patch.sed, HADOOP-2916.patch,
> svn-commands.sh, svn-commands.sh
>
>
> This Jira proposes that the src structure be split as below.
> The package structure remains the same for this Jira. (Package renaming is
> part of other JIras such as HADOOP-2885).
> The idea is that the src will be split BEFORE the package restructuring
> The new proposed src structure is
> src/test - unchanged
> src/java - will no longer exit , its content will be move to one of core,
> hdfs, or mapred
> src/core - this will contain the core classes that hadoop applications need
> to link against.
> It will contain client side libraries of all fs file systems: local,
> hdfs, kfs, etc
> jar name hadoop_core.jar
> src/core/org.apache.hadoop.{conf, fs, filechache, io, ipc, log, metrics,
> net, record, security, tools, util)
> src/core/org.apache.hadoop.dfs - this will contain only the client side
> parts of dfs.
> HADOOP-2885 will rename package dfs to package fs.hdfs
> src/hdfs/org.apache.hadoop.dfs - this will contain only the server side of
> hdfs.
> HADOOP-2885 will rename package dfs to package fs.hdfs later; a
> compatible dfs.DistributedFileSystem will be left for compatibility/
> jar name hadoop_hdfs.jar - this jar can be used to launce NNs and DNs etc.
> src/mapred/org.apache.hadoop.mapred.*
> Initially one jar: hadoop_mapred.jar
> Later this may be split into client-side and server-side jars.
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