emr hadoop 参数调优
sethive.merge.mapfiles=true;sethive.merge.mapredfiles=true;sethive.merge.size.per.task=100000000;setmapred.task.timeout=60000000;sethive.exec.compress...
sethive.merge.mapfiles=true;sethive.merge.mapredfiles=true;sethive.merge.size.per.task=100000000;setmapred.task.timeout=60000000;sethive.exec.compress...