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https://issues.apache.org/jira/browse/HDFS-7378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16649983#comment-16649983
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Dedunu Dhananjaya commented on HDFS-7378:
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+1
> There should be a method to quickly test if a file is a SequenceFile or if a
> stream contains SequenceFile data
> --------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-7378
> URL: https://issues.apache.org/jira/browse/HDFS-7378
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Jens Rabe
> Priority: Trivial
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> Currently, to check whether a file is a SequenceFile or a stream contains
> data in SequenceFile format, one either has to check the message of the
> thrown exception when opening a file with SequenceFile.Reader, or has to
> check the first four bytes by him/herself.
> A utility method like SequenceFile.isSequenceFile would be very handy here.
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