文章浏览阅读284次。impala、hive之SQL性能测试前提条件说明:impala已打通hive元数据,测试表格式为parquet建表性能测试一、impala建表SQLcreate table temp.ad_impala stored as parquet as select ymd,username,udid,result,requesttime,positions,logid,productname,syste......
文章浏览阅读8.2k次,点赞4次,收藏12次。一、hadoop自带的性能基准评测工具(一)TestDFSIO1、测试写性能(1)若有必要,先删除历史数据 $hadoop jar /home/hadoop/hadoop/share/hadoop/mapreduce2/hadoop-mapreduce-client-jobclient-2.3.0-cdh5.1.2-tests.jar Test......
文章浏览阅读521次。1) 测试HDFS写性能测试内容:向HDFS集群写10个128M的文件hadoop jar $HADOOP_HOME/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.7.2-tests.jar TestDFSIO -write -nrFiles 10 -fileSize 128MB输出日志:20/04/16..._hdfs does not have any open file......