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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-7744) Fix potential NPE in DFSInputStream after setDropBehind or setReadahead is called
Date Fri, 06 Feb 2015 20:35:34 GMT
Colin Patrick McCabe created HDFS-7744:
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             Summary: Fix potential NPE in DFSInputStream after setDropBehind or setReadahead
is called
                 Key: HDFS-7744
                 URL: https://issues.apache.org/jira/browse/HDFS-7744
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: dfsclient
    Affects Versions: 2.6.0
            Reporter: Colin Patrick McCabe
            Assignee: Colin Patrick McCabe


Fix a potential NPE in DFSInputStream after setDropBehind or setReadahead is called.  These
functions clear the {{blockReader}}, but don't set {{blockEnd}} to -1, which could lead to
{{DFSInputStream#seek}} attempting to derference {{blockReader}} even though it is {{null}}.



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