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https://issues.apache.org/jira/browse/HADOOP-2916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12573857#action_12573857
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Doug Cutting commented on HADOOP-2916:
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> src/core/org.apache.hadoop.dfs
Do you really mean to use directories with dots in their names, or do you mean
slashes? That's an unusual naming convention for java source... What would
the full path of an HDFS source file be?
Also, we should stop using the term 'dfs' and consistently use 'hdfs' instead.
Yes, it is a little redundant, but that's okay: better redundant than
inconsistent. Long-ago, when we added URIs, we decided that 'dfs' was too
ambiguous, and that 'hdfs' was the preferred name. We did not rename packages
or classes then, to avoid the disruption, but that was always the intent.
> Refactor src structure, but leave package structure along
> ---------------------------------------------------------
>
> Key: HADOOP-2916
> URL: https://issues.apache.org/jira/browse/HADOOP-2916
> Project: Hadoop Core
> Issue Type: Sub-task
> Reporter: Sanjay Radia
> Fix For: 0.17.0
>
>
> 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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