bin/hadoop job -set-reduce-capacity job_20151126032920_1142443 1000 調成map數 bin/hadoop job -set-priority job_20151126032920_1160549 VERY_HIGH 調整優先級 bin/hadoop job -set-map-capacity job_20151126032920_1142443 1000--------------------------------------:$ bin/hadoop job Usage: JobClient <command> <args> [-submit <job-file>] [-status <job-id>] [-info <job-id>] [-counter <job-id> <group-name> <counter-name>] [-kill <job-id>] [-abort <job-id>] [-suspend <job-id> [hours]] [-recover <job-id> [-force] [-jobconf name=value] [-file local-path] [-cacheArchive] [-cacheFile]] [-set-priority <job-id> <priority>]. Valid values for priorities are: VERY_HIGH HIGH NORMAL LOW VERY_LOW [-set-map-capacity <job-id> <map-capacity> [ <vertex-id> ] ] [-set-reduce-capacity <job-id> <reduce-capacity> [ <vertex-id> ] ] [-set-map-over-capacity <job-id> <true/false> [ <vertex-id> ] ] [-set-reduce-over-capacity <job-id> <true/false> [ <vertex-id> ] ] [-events <job-id> <from-event-#> <#-of-events>] [-history <jobOutputDir>] [-list [all]] [-kill-task <task-id>] [-fail-task <task-id>] [-schedule-task <task-id>] [-input-add <job-id> <input> [ <vertex-id> ] ] [-input-done <job-id> [ <vertex-id> ] ] [-reload-limit-conf] [-idle-failover <job-id>] Generic options supported are-conf <configuration file> specify an application configuration file-D <property=value> use value for given property-fs <local|namenode:port> specify a namenode-jt <local|jobtracker:port> specify a job tracker-files <comma separated list of files> specify comma separated files to be copied to the map reduce cluster-libjars <comma separated list of jars> specify comma separated jar files to include in the classpath.-archives <comma separated list of archives> specify comma separated archives to be unarchived on the compute machines.The general command line syntax isbin/hadoop command [genericOptions] [commandOptions]