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https://issues.apache.org/jira/browse/HADOOP-9307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13578514#comment-13578514
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Todd Lipcon commented on HADOOP-9307:
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Yea, I have a randomized test case that finds this bug within a few seconds -
basically a copy of one that I wrote for HDFS a couple years ago. Will upload
it with a bugfix patch hopefully later today, but maybe early next week (pretty
busy next two days). FWIW the fix is simple -- just need to add {{(this.pos !=
this.count)}} into the condition to run the seek-in-buffer optimization
> BufferedFSInputStream.read returns wrong results after certain seeks
> --------------------------------------------------------------------
>
> Key: HADOOP-9307
> URL: https://issues.apache.org/jira/browse/HADOOP-9307
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 1.1.1, 2.0.2-alpha
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
>
> After certain sequences of seek/read, BufferedFSInputStream can silently
> return data from the wrong part of the file. Further description in first
> comment below.
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