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https://issues.apache.org/jira/browse/HDFS-7098?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinayakumar B resolved HDFS-7098.
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Resolution: Duplicate
Duplicate created due to slow internet
> Support polling for more data from a write-in-progress file using same
> DFSInputStream
> -------------------------------------------------------------------------------------
>
> Key: HDFS-7098
> URL: https://issues.apache.org/jira/browse/HDFS-7098
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Vinayakumar B
> Assignee: Vinayakumar B
>
> Currently DFSInputStream can read only till the bytes written which were
> written by the time of Opening it for reading.
> But, later there can be more bytes written to same file.
> If client expects more data to be available, then client can poll it
> continuously for more data without re-opening the stream.
> One simple example use case for this is tailing logs files.
> Currently LocalFileSystem supports this.
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