\"'\"<h1>hello world</h1>\"'\"
2016-11-11
job task jobTracker TaskTracker
JobTracker:作業(yè)調(diào)度,分配任務(wù)(map任務(wù) reduce任務(wù)),監(jiān)控tasktracker狀態(tài);
tasktracker執(zhí)行任務(wù) 報(bào)告狀態(tài);
MapReduce容錯(cuò)機(jī)制:重復(fù)執(zhí)行,推測(cè)執(zhí)行
JobTracker:作業(yè)調(diào)度,分配任務(wù)(map任務(wù) reduce任務(wù)),監(jiān)控tasktracker狀態(tài);
tasktracker執(zhí)行任務(wù) 報(bào)告狀態(tài);
MapReduce容錯(cuò)機(jī)制:重復(fù)執(zhí)行,推測(cè)執(zhí)行
2016-11-03
現(xiàn)在的mapreduce是要依靠Yarn框架的,jobtracker已經(jīng)是上一代的東西了
2016-11-02
javac -classpath /opt/hadoop-1.2.1/hadoop-core-1.2.1.jar:/opt/hadoop-1.2.1/lib/commons-cli-1.2.jar -d word_count_class/WordCount.java
javac: not a directory: word_count_class/WordCount.java
Usage: javac <options> <source files>
use -help for a list of possible options
怎么解決呀!
javac: not a directory: word_count_class/WordCount.java
Usage: javac <options> <source files>
use -help for a list of possible options
怎么解決呀!
2016-10-23
HIVE:通過(guò)SQL實(shí)現(xiàn)Hadoop任務(wù)
HBASE:數(shù)據(jù)庫(kù)
zookeeper:監(jiān)控,配置
HBASE:數(shù)據(jù)庫(kù)
zookeeper:監(jiān)控,配置
2016-10-15
HDFS,文件系統(tǒng)
MapReduce,并行處理框架,實(shí)現(xiàn)任務(wù)分解和調(diào)度
MapReduce,并行處理框架,實(shí)現(xiàn)任務(wù)分解和調(diào)度
2016-10-15