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https://issues.apache.org/jira/browse/HDFS-5323?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe updated HDFS-5323:
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Attachment: HDFS-5323.001.patch
> Remove some deadcode in BlockManager
> ------------------------------------
>
> Key: HDFS-5323
> URL: https://issues.apache.org/jira/browse/HDFS-5323
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 2.3.0
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Priority: Minor
> Attachments: HDFS-5323.001.patch
>
>
> {{BlockManager#DEFAULT_MAP_LOAD_FACTOR}} is deadcode. It no longer does
> *anything* since blocks are now stored in a GSet whose size is fixed.
> {{BlocksMap#blocks}} does not need to be volatile. Whenever it is accessed,
> it is accessed under the {{FSNamesystem}} lock. Furthermore, access to this
> data structure is not thread-safe.
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