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https://issues.apache.org/jira/browse/HADOOP-1272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12490261
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Tom White commented on HADOOP-1272:
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This will also make the code clearer by breaking up the huge class into smaller
chunks (FSNamesystem is over 4000 lines long!). The top ten:
find src/java/org/apache/hadoop -name *.java | xargs wc -l | sort -nr | head
68614 total
4277 src/java/org/apache/hadoop/dfs/FSNamesystem.java
2682 src/java/org/apache/hadoop/io/SequenceFile.java
1960 src/java/org/apache/hadoop/mapred/TaskTracker.java
1717 src/java/org/apache/hadoop/mapred/JobTracker.java
1440 src/java/org/apache/hadoop/dfs/DFSClient.java
1309 src/java/org/apache/hadoop/dfs/DataNode.java
1208 src/java/org/apache/hadoop/mapred/ReduceTask.java
1095 src/java/org/apache/hadoop/fs/FsShell.java
964 src/java/org/apache/hadoop/mapred/JobInProgress.java
> Extract InnerClasses from FSNamesystem into separate classes
> ------------------------------------------------------------
>
> Key: HADOOP-1272
> URL: https://issues.apache.org/jira/browse/HADOOP-1272
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Reporter: dhruba borthakur
> Assigned To: dhruba borthakur
> Attachments: innerclasses.patch
>
>
> This will make the code cleaner. Also, it leads itself to a cleaner and
> easily understandable finer-grain locking model.
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