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https://issues.apache.org/jira/browse/HDFS-4661?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe updated HDFS-4661:
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Attachment: HDFS-4661.004.patch
> code style fixes suggested by Nicholas
> --------------------------------------
>
> Key: HDFS-4661
> URL: https://issues.apache.org/jira/browse/HDFS-4661
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, hdfs-client, performance
> Reporter: Colin Patrick McCabe
> Priority: Minor
> Attachments: HDFS-4661.001.patch, HDFS-4661.002.patch,
> HDFS-4661.003.patch, HDFS-4661.004.patch
>
>
> * The log statement in DataXceiver
> "BlockSender.ClientTraceLog.info("REQUEST_SHORT_CIRCUIT_FDS"...)" could be
> cleaned up somewhat.
> * use {{FsDatasetSpi#getBlockInputStream}} and
> {{FsDatasetSpi#getMetaDataInputStream}} rather than adding
> {{FsDatasetSpi#getShortCircuitFdsForRead}}
> * {{FileInputStreamCache.Key.equals}}: use short-circuit boolean AND
> * In FileInputStreamCache.CacheCleaner, the code "iter =
> map.entries().iterator()" can be removed with the same result since the
> (previous) first element must be removed.
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