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From "John George (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-2034) reading from currently being written block does not work
Date Sat, 04 Jun 2011 04:44:47 GMT
reading from currently being written block does not work 
---------------------------------------------------------

                 Key: HDFS-2034
                 URL: https://issues.apache.org/jira/browse/HDFS-2034
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: John George
            Assignee: John George


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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