hadoop源码阅读-shell启动流程-start-all
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when executes start-all.sh (or start-dfs.sh,start-mapred.sh) ,some config files listed below will be loaded:
?? libexec/hadoop-config.sh ( use? bin/hadoop-config.sh? if without previor)
?? config/hadoop-env.sh
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and if start NN or JT,it will invoke
? hadoop-daemon.sh
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and when starts DN or TT,it will invoke
? hadoop-daemons.sh
to run the cluster by ssh respectively
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