Colin Patrick McCabe
Arun C Murthy
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[HADOOP-9150] Unnecessary DNS resolution attempts for logical URIs
...In the FileSystem code, we accidentally try to DNS-resolve the logical name before it is converted to an actual domain name. In some DNS setups, this can cause a big slowdown - eg in one mis...
, 2014-08-01, 03:30
[HADOOP-10882] Move DirectBufferPool into common util
...MAPREDUCE-2841 uses a direct buffer pool to pass data back and forth between native and Java code. The branch has an implementation which appears to be derived from the one in HDFS. Instead ...
, 2014-07-24, 15:59
[HADOOP-10855] Allow Text to be read with a known length
...For the native task work (MAPREDUCE-2841) it is useful to be able to store strings in a different fashion than the default (varint-prefixed) serialization. We should provide a "read" method ...
, 2014-07-23, 15:58
[HADOOP-6069] Remove explicit dynamic loading of libz in native code
...The native zlib code currently uses dlopen/dlsym to dynamically load libz. This used to make sense when there was an lzo option (so you could load libhadoop for lzo purposes without requirin...
, 2014-07-22, 22:43
[HADOOP-5888] Improve test run time by avoiding 0.0.0.0 lookups
...HADOOP-3694 discusses the fact that 0.0.0.0 is slower to reverse than 127.0.0.1 on a lot of systems. The replacing of 0.0.0.0 with 127.0.0.1 was only partially completed in that ticket. This...
, 2014-07-22, 20:51
[HADOOP-10859] Native implementation of java Checksum interface
...Some parts of our code such as IFileInputStream/IFileOutputStream use the java Checksum interface to calculate/verify checksums. Currently we don't have a native implementation of these. For...
, 2014-07-18, 16:40
[HADOOP-8158] Interrupting hadoop fs -put from the command line causes a LeaseExpiredException
...If you run "hadoop fs -put - foo", write a few lines, then ^C it from the shell, about half the time you will get a LeaseExpiredException. It seems like the shell is first calling delete() o...
, 2014-07-13, 11:37
[HADOOP-6947] Kerberos relogin should set refreshKrb5Config to true
...In working on securing a daemon that uses two different principals from different threads, I found that I wasn't able to login from a second keytab after I'd logged in from the first. This i...
, 2014-06-20, 11:15
[HADOOP-6408] Add a /conf servlet to dump running configuration
...HADOOP-6184 added a command line flag to dump the running configuration. It would be great for cluster troubleshooting to provide access to this as a servlet, preferably in both JSON and XML...
, 2014-02-04, 01:45
[HADOOP-10288] Explicit reference to Log4JLogger breaks non-log4j users
...In HttpRequestLog, we make an explicit reference to the Log4JLogger class for an instanceof check. If the log4j implementation isn't actually on the classpath, the instanceof check throws No...
, 2014-01-28, 23:37
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