question about nnbench

2018-05-17 Thread Xiangfei Ni
Hi Expert, I am using nnbench to test the namenode performance,I am using this command: hadoop jar /opt/hadoop-2.7.4/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.7.4.jar nnbench -operation create_write -maps 10 -reduces 5 -numberOfFiles 100 -replicationFactorPerFile 2

[ANNOUNCE] Apache Hadoop 2.8.4 is released

2018-05-17 Thread 堵俊平
Hi all, I am pleased to announce that the Apache Hadoop community has voted to release Apache Hadoop 2.8.4! Apache Hadoop 2.8.4 is the next GA release of Apache Hadoop 2.8 line, which include 77 fixes identified for previous Hadoop 2.8.3 releases: - For major changes included in