hadoop最基本配置及build(ant代理) 转

网上的大多数都是hadoop-site.xml
20的版本，分成了3个配置文件，core-site.xml,hdfs-site.xml,mapred-site.xml，
默认的在core.jar里面，源码在
hadoop-0.20.2\src\core\core-default.xml
hadoop-0.20.2\src\mapred\mapred-default.xml
hadoop-0.20.2\src\hdfs\hdfs-default.xml
core.jar里面还打了个hadoop-metrics.properties不知道干什么的
bin.tgz是把bin目录下的东西打包了，这样就能用了？
还有两个slaves，masters也相关
5个最基本的比较重要
1.fs.default.name
2.hadoop.tmp.dir
3.mapred.job.tracker
4.dfs.name.dir
5.dfs.data.dir
6.dfs.http.address


core-site.xml中hadoop.tmp.dir为临时目录，如果hdfs-site.xml中不配置namenode和datanode的存放位置，默认就放在这个hadoop.tmp.dir中了

修改为
[root@122226?vsuite]#?jrv?quick??Starting?JRV??JR_HOME=?/usr/local/hadoop/jr??JRC=?????perl?"/usr/local/hadoop/jr/bin/jrc"??JRRUN=???perl?"/usr/local/hadoop/jr/bin/jrrun"??JAVAC=???"/usr/java/jdk1.6.0_23/bin/javac"??JAVA=????"/usr/java/jdk1.6.0_23/bin/java"??ccr2jr=??perl?"/usr/local/hadoop/jr/bin/ccr2jr"??csp2jr=??perl?"/usr/local/hadoop/jr/bin/csp2jr"??m2jr=????perl?"/usr/local/hadoop/jr/bin/m2jr"??WHICH=???/usr/bin/which??CMP=?????perl?"/usr/local/hadoop/jr/bin/cmp.pl"??GREP=????perl?"/usr/local/hadoop/jr/bin/grep.pl"??SORT=????perl?"/usr/local/hadoop/jr/bin/sort.pl"??TAIL=????perl?"/usr/local/hadoop/jr/bin/tail.pl"??jr?compiler?version?"2.00602?(Mon?Jun?1?10:59:20?PDT?2009)"??jr?rts??????version?"2.00602?(Mon?Jun?1?10:59:25?PDT?2009)"??HOST=?122226??Start?Directory=?/usr/local/hadoop/jr/vsuite??JR.JRT?=?/usr/local/hadoop/jr/classes/jrt.jar?????-rw-r--r--???1?root?????root???????2090324?Jun??2??2009?/usr/local/hadoop/jr/classes/jrt.jar??JR.JRX?=?/usr/local/hadoop/jr/classes/jrx.jar?????-rw-r--r--???1?root?????root????????227198?Jun??2??2009?/usr/local/hadoop/jr/classes/jrx.jar??Operating?System=???original?CLASSPATH=?/usr/java/jdk1.6.0_23/lib:/usr/local/hadoop/jr/classes/jrt.jar:/usr/local/hadoop/jr/classes/jrx.jar:.??jrv?sets?CLASSPATH=?.:/usr/local/hadoop/jr/classes/jrt.jar:/usr/local/hadoop/jr/classes/jrx.jar??DATE=?Thu?Oct?14?20:14:21?2010??quick/baby:??????expected?0,?got?1?from?jrrun?<null??quick/fact_2:??????expected?0,?got?1?from?jrrun?<null??quick/misc_invocation_count_st_by_0:??????expected?0,?got?1?from?jrrun?<null??DATE=?Thu?Oct?14?20:14:34?2010??Elapsed?time?(hh:mm:ss)=?00:00:13??[root@122226?vsuite]#?pwd??/usr/local/hadoop/jr/vsuite??