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https://issues.apache.org/jira/browse/HDFS-2034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-2034:
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Status: Open (was: Patch Available)
> length in getBlockRange becomes -ve when reading only from currently being
> written blk
> --------------------------------------------------------------------------------------
>
> Key: HDFS-2034
> URL: https://issues.apache.org/jira/browse/HDFS-2034
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: John George
> Assignee: John George
> Priority: Minor
> Attachments: HDFS-2034-1.patch, HDFS-2034-1.patch, HDFS-2034-2.patch,
> HDFS-2034-3.patch, HDFS-2034.patch
>
>
> This came up during HDFS-1907. Posting an example that Todd posted in
> HDFS-1907 that brought out this issue.
> {quote}
> Here's an example sequence to describe what I mean:
> 1. open file, write one and a half blocks
> 2. call hflush
> 3. another reader asks for the first byte of the second block
> {quote}
> In this case since offset is greater than the completed block length, the
> math in getBlockRange() of DFSInputStreamer.java will set "length" to
> negative.
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