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[HADOOP-11152] Better random number generator
...HDFS-7122 showed that naive ThreadLocal usage of simple LCG based j.u.Random creates unacceptable distribution of random numbers for block placement. Similarly, ThreadLocalRandom in java 7 (...
, 2017-01-07, 01:57
[HADOOP-7266] Deprecate metrics v1
, 2016-08-30, 01:33
[HADOOP-8419] GzipCodec NPE upon reset with IBM JDK
...The GzipCodec will NPE upon reset after finish when the native zlib codec is not loaded. When the native zlib is loaded the codec creates a CompressorOutputStream that doesn't have the probl...
, 2016-08-30, 01:33
[HADOOP-7601] Move common fs implementations to a hadoop-fs module
...Much of the hadoop-common dependencies is from the fs implementations. We have more fs implementations on the way (ceph, lafs etc). I propose that we move all the fs implementations to a had...
, 2015-10-31, 11:54
[HADOOP-9194] RPC Support for QoS
...One of the next frontiers of Hadoop performance is QoS (Quality of Service). We need QoS support to fight the inevitable "buffer bloat" (including various queues, which are probably necessar...
, 2015-09-28, 20:50
[HADOOP-8425] Upgrade commons-math version to 2.2
...From commons math 2.2 release note: "This is primarily a maintenance release, but it also includes new features and enhancements. Users of version 2.1 are encouraged to upgrade to 2.2, as th...
, 2015-06-04, 11:41
[HADOOP-8560] Change TestFTPFileSystem to use non-SNAPSHOT dependencies
...It would good if the stable hadoop release don't depend on SNAPSHOT ftpserver artifacts....
, 2015-05-08, 10:22
[HADOOP-7264] Bump avro version to at least 1.4.1
...Needed by mapreduce 2.0 avro support. Maybe we could jump to Avro 1.5. There is incompatible API changes from 1.3x to 1.4x (Utf8 to CharSequence in user facing APIs) not sure about 1.5x thou...
, 2015-03-16, 19:48
[HADOOP-8561] Introduce HADOOP_PROXY_USER for secure impersonation in child hadoop client processes
...To solve the problem for an authenticated user to type hadoop shell commands in a web console, we can introduce an HADOOP_PROXY_USER environment variable to allow proper impersonation in the...
, 2014-09-04, 00:22
[HADOOP-9683] Wrap IpcConnectionContext in RPC headers
...After HADOOP-9421, all RPC exchanges (including SASL) are wrapped in RPC headers except IpcConnectionContext, which is still raw protobuf, which makes request pipelining (a desirable feature...
, 2014-09-04, 00:02
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