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[HDFS-6898] DN must reserve space for a full block when an RBW block is created - HDFS - [issue]
...DN will successfully create two RBW blocks on the same volume even if the free space is sufficient for just one full block.One or both block writers may subsequently get a DiskOutOfSpace exc...
http://issues.apache.org/jira/browse/HDFS-6898    Author: Gopal V, 2014-09-01, 22:18
[HDFS-6912] SharedFileDescriptorFactory should not allocate sparse files - HDFS - [issue]
...SharedFileDescriptor factory should not allocate sparse files.  Sparse files can lead to a SIGBUS later in the short-circuit reader when we try to read from the sparse file and memory i...
http://issues.apache.org/jira/browse/HDFS-6912    Author: Gopal V, 2014-08-27, 00:39
[HDFS-6935] RawLocalFileSystem::supportsSymLinks is confusing - HDFS - [issue]
......  @Override  public boolean supportsSymlinks() {    return true;  }  @SuppressWarnings("deprecation")  @Override &nbs...
http://issues.apache.org/jira/browse/HDFS-6935    Author: Gopal V, 2014-08-26, 00:12
[HDFS-6836] HDFS INFO logging is verbose & uses file appenders - HDFS - [issue]
...Reported by:  Gopal V.The HDFS INFO logs is present within the inner loops of HDFS logging information like2014-07-24 19:43:34,459 INFO  DataNode.clienttrace (BlockSender.java:send...
http://issues.apache.org/jira/browse/HDFS-6836    Author: Gopal V, 2014-08-13, 16:36
[HDFS-4710] SCR should honor dfs.client.read.shortcircuit.buffer.size even when checksums are off - HDFS - [issue]
...When short-circuit reads are on, HDFS client slows down when checksums are turned off.With checksums on, the query takes 45.341 seconds and with it turned off, it takes 56.345 seconds. This ...
http://issues.apache.org/jira/browse/HDFS-4710    Author: Gopal V, 2013-12-17, 20:58
[HDFS-4070] DFSClient ignores bufferSize argument & always performs small writes - HDFS - [issue]
...The following code illustrates the issue at hand protected void map(LongWritable offset, Text value, Context context)             throws IOException, Inte...
http://issues.apache.org/jira/browse/HDFS-4070    Author: Gopal V, 2012-11-26, 18:17
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