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Hudson commented on HDFS-5762: ------------------------------ SUCCESS: Integrated in Hadoop-trunk-Commit #5003 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/5003/]) HDFS-5762. BlockReaderLocal does not return -1 on EOF when doing zero-length reads (cmccabe) (cmccabe: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1558526) * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/BlockReader.java * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/BlockReaderLocal.java * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestBlockReaderLocal.java > BlockReaderLocal doesn't return -1 on EOF when doing zero-length reads > ---------------------------------------------------------------------- > > Key: HDFS-5762 > URL: https://issues.apache.org/jira/browse/HDFS-5762 > Project: Hadoop HDFS > Issue Type: Bug > Affects Versions: 2.4.0 > Reporter: Colin Patrick McCabe > Assignee: Colin Patrick McCabe > Fix For: 2.4.0 > > Attachments: HDFS-5762.001.patch, HDFS-5762.002.patch > > > Unlike the other block readers, BlockReaderLocal currently doesn't return -1 > on EOF when doing zero-length reads. This behavior, in turn, propagates to > the DFSInputStream. BlockReaderLocal should do this, so that client can > determine whether the file is at an end by doing a zero-length read and > checking for -1. > One place this shows up is in libhdfs, which does such a 0-length read to > determine if direct (i.e., ByteBuffer) reads are supported. -- This message was sent by Atlassian JIRA (v6.1.5#6160)