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https://issues.apache.org/jira/browse/HDFS-8943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14710527#comment-14710527
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Shradha Revankar commented on HDFS-8943:
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The loop will only read upto len bytes. Unfortunately, not having the loop
breaks things when chunked-encoding is used. For eg. hbase expects the exact
number of bytes to be read
https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java#L1446-L1450
> Read apis in ByteRangeInputStream does not read all the bytes specified when
> chunked transfer-encoding is used in the server
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-8943
> URL: https://issues.apache.org/jira/browse/HDFS-8943
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: webhdfs
> Affects Versions: 2.7.1
> Reporter: Shradha Revankar
> Assignee: Shradha Revankar
> Attachments: HDFS-8943.000.patch
>
>
> With the default Webhdfs server implementation the read apis in
> ByteRangeInputStream work as expected reading the correct number of bytes for
> these apis :
> {{public int read(byte b[], int off, int len)}}
> {{public int read(long position, byte[] buffer, int offset, int length)}}
> But when a custom Webhdfs server implementation is plugged in which uses
> chunked Transfer-encoding, these apis read only the first chunk. Simple fix
> would be to loop and read till bytes specified similar to {{readfully()}}
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