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Re: Re: HDFS block physical location - Hadoop - [mail # user]
...Hi JS,  You may also be interested in the following JIRA which proposes an API for block->disk mapping information: https://issues.apache.org/jira/browse/HDFS-3672  There has be...
   Author: Todd Lipcon, 2012-07-25, 22:51
[HADOOP-7761] Improve performance of raw comparisons - Hadoop - [issue]
...Guava has a nice implementation of lexicographical byte-array comparison that uses sun.misc.Unsafe to compare unsigned byte arrays long-at-a-time. Their benchmarks show it as being 2x more C...
http://issues.apache.org/jira/browse/HADOOP-7761    Author: Todd Lipcon, 2012-07-23, 17:52
[HADOOP-8609] IPC server logs a useless message when shutting down socket - Hadoop - [issue]
...I occasionally see this WARN message out of the NameNode:12/07/19 10:37:37 WARN ipc.Server: Ignoring socket shutdown exceptionwith no further details. This message isn't useful - it either n...
http://issues.apache.org/jira/browse/HADOOP-8609    Author: Todd Lipcon, 2012-07-21, 14:03
Re: [DISCUSS] Merge *-user@hadoop lists? - Hadoop - [mail # general]
...Sure, +1. I already subscribe to all and filter into the same mailbox anyway :)  -Todd  On Fri, Jul 20, 2012 at 11:34 AM, Mahadev Konar  wrote:    Todd Lipcon Softwa...
   Author: Todd Lipcon, 2012-07-20, 19:05
[HADOOP-8397] NPE thrown when IPC layer gets an EOF reading a response - Hadoop - [issue]
...When making a call on an IPC connection where the other end has shut down, I see the following exception:Caused by: java.lang.NullPointerException        at org.apac...
http://issues.apache.org/jira/browse/HADOOP-8397    Author: Todd Lipcon, 2012-07-20, 18:32
[HADOOP-7446] Implement CRC32C native code using SSE4.2 instructions - Hadoop - [issue]
...Once HADOOP-7445 is implemented, we can get further performance improvements by implementing CRC32C using the hardware support available in SSE4.2. This support should be dynamically enabled...
http://issues.apache.org/jira/browse/HADOOP-7446    Author: Todd Lipcon, 2012-07-19, 17:42
[HADOOP-7307] Remove Dr Who references - Hadoop - [issue]
...I've had feedback from a number of different operators that the "dr who" references that occasionally come out of Hadoop are annoying and confusing. We should replace them with more descript...
http://issues.apache.org/jira/browse/HADOOP-7307    Author: Todd Lipcon, 2012-07-19, 01:12
[HADOOP-7753] Support fadvise and sync_data_range in NativeIO, add ReadaheadPool class - Hadoop - [issue]
...This JIRA adds JNI wrappers for sync_data_range and posix_fadvise. It also implements a ReadaheadPool class for future use from HDFS and MapReduce....
http://issues.apache.org/jira/browse/HADOOP-7753    Author: Todd Lipcon, 2012-07-17, 21:32
[HADOOP-8362] Improve exception message when Configuration.set() is called with a null key or value - Hadoop - [issue]
...Currently, calling Configuration.set(...) with a null value results in a NullPointerException within Properties.setProperty. We should check for null key/value and throw a better exception....
http://issues.apache.org/jira/browse/HADOOP-8362    Author: Todd Lipcon, 2012-07-16, 13:21
[HADOOP-8350] Improve NetUtils.getInputStream to return a stream which has a tunable timeout - Hadoop - [issue]
...Currently, NetUtils.getInputStream will set the timeout on the new stream based on the socket's configured timeout at the time of construction. After that, the timeout cannot be changed. Thi...
http://issues.apache.org/jira/browse/HADOOP-8350    Author: Todd Lipcon, 2012-07-14, 23:33
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