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bitch please
bitch please
bitch please
bitch please
bitch please
bitch please
bitch please
bitch please
bitch please
bitch please
bitch please
bitch please
bitch please
bitch please
bitch please
bitch please
bitch please
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bitch please

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Transcript

  • 1. Hadoop Edit by Cassell Hsu 2013.04.19
  • 2. Hadoop Master Slave Slave Slave
  • 3. Hadoop • Master • NameNode • JobTracker • SecondaryNameNode
  • 4. NameNode • Where is NameNode? • Master • HDFS(Hadoop Distributed File System) • What is NameNode? • 資料之位置資訊 • 資料之屬性 ??
  • 5. NameNode • 位置資訊? • 所有資料皆存放在 – DataNode
  • 6. DataNode • What is DataNode • 存放資料 • Where is DataNode • HDFS • Slaves (and Master)
  • 7. User DataNode NameNode DataNode DataNode 12 8M b B 64Mb A 64Mb Check hdfs-site.xml B 64Mb A 64Mb
  • 8. Hadoop DataNodeNameNode Master DataNode DataNode DataNode Slaves
  • 9. Hadoop • Master • NameNode • JobTracker • SecondaryNameNode
  • 10. JobTracker • What is JobTracker? • 排程工作 • Where is JobTracker? • Master 誰來工作?
  • 11. JobTracker & TaskTrackerJobTracker TaskTracker Where Master Slaves What 排程工作 執行工作
  • 12. Hadoop DataNodeNameNode Master DataNode Slaves JobTracker TaskTracker
  • 13. Hadoop • Master • NameNode • JobTracker • SecondaryNameNode
  • 14. SecondaryNameNod e • What is SecondaryNameNode? • NameNode發生錯誤時補救 • Where is SecondaryNameNode? • Master
  • 15. Hadoop DataNodeNameNode Master DataNode Slaves JobTracker TaskTracker SecondaryNode
  • 16. MapReduce User Master Slave2 Slave1 A A1 A2 Task NameNode Task Result 1 Result 2 Reduc e Final Result HDFS
  • 17. MapReduce • 檔案切割 • Hadoop上區塊切割 • 程式指定

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