Colin Patrick McCabe
Tsz Wo Nicholas Sze
Arun C Murthy
Vinod Kumar Vavilapalli
Brahma Reddy Battula
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[HADOOP-6133] ReflectionUtils performance regression
...HADOOP-4187 introduced extra calls to Class.forName in ReflectionUtils.setConf. This caused a fairly large performance regression. Attached is a microbenchmark that shows the following timin...
, 2012-07-30, 14:37
[HADOOP-8609] IPC server logs a useless message when shutting down socket
...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...
, 2012-07-21, 14:03
[HADOOP-8397] NPE thrown when IPC layer gets an EOF reading a response
...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.apache.ha...
, 2012-07-20, 18:32
[HADOOP-7446] Implement CRC32C native code using SSE4.2 instructions
...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...
, 2012-07-19, 17:42
[HADOOP-7307] Remove Dr Who references
...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...
, 2012-07-19, 01:12
[HADOOP-7753] Support fadvise and sync_data_range in NativeIO, add ReadaheadPool class
...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....
, 2012-07-17, 21:32
[HADOOP-8362] Improve exception message when Configuration.set() is called with a null key or value
...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....
, 2012-07-16, 13:21
[HADOOP-8350] Improve NetUtils.getInputStream to return a stream which has a tunable timeout
...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...
, 2012-07-14, 23:33
[HADOOP-8590] Backport HADOOP-7318 (MD5Hash factory should reset the digester it returns) to branch-1
...I ran into this bug on branch-1 today, it seems like we should backport it....
, 2012-07-12, 03:25
[HADOOP-7094] hadoop.css got lost during project split
...hadoop.css no longer exists in common or HDFS, so the web UIs look pretty ugly. The HTML still refers to this file, it's just gone....
, 2012-06-28, 21:29
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