Hadoop Framework

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The Hadoop Framework

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What was the problem "#$

collect aw ata

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M*

epo

Moving data to compute can't keep up wi volume of data generated (bottle neck: I/O

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History ●

+,s: Web-rawler. "cite. $0cos. Infosee  lta1ista %%%

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2,,,. 3oogle rose to prominence

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2,,4 3oogle released paper on 35*: #he 3oogle 5ile *0stem

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2,,6 3oogle released paper on Maped

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35*

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35* ●

*ingle master maintaining file s0stem metadata

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5iles divided into fied si<e chunks%

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"ach chunk is replicated on multiple chunkserv

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-lient interact with master for metadata operati but data communication goes directl0 to chunk

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Mapeduce

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Word-ount "ample of Mapeduce map(String name, String document): // key: document name // value: document contents for each word w in document: EmitIntermediate(w, "1");

reduce(String word, Iterator partialCounts): // key: a word

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 pache &adoop 5ramework ●

  open source framework of tools for big storage and processing%

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*calable

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5ault tolerant

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Main components:

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&5*

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&5* ●

esigned to store gigantic files (giga to tera b0t

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*uitable for mostl0 immutable files

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>ot suitable for concurrent write

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lock structures (large files broke into fied si<e blocks)

efault block si<e ;6M (structured file s0stem block si<e: 6k ABk)

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&adoop rchitecture

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&adoop rchitecture

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&adoop rchitecture ●

●

●

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&5* @@ fault tolerant. high bandwidth data stora la0er 

Mapeduce C distributed. fault tolerant resource management and data@processing Move compute to data

*chema on read (late binding) instead of schem write(M*)

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elated #ools  pache 7ig

 pache Mahou

 pache &ive

 pache FooGee

 pache &ase  pache 5lume

&igh level data flow language: 7ig$atin% -an be parsed and

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elated #ools  pache 7ig

 pache Mahou

 pache &ive

 pache FooGee

 pache &ase  pache 5lume

ata warehouse infrastructure o top of &adoop for data summari<ation. =uer0 and anal0sis% *H$ like language

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elated #ools  pache 7ig

 pache Mahou

 pache &ive

 pache FooGee

 pache &ase  pache 5lume

  distributed storage s0stem for structured data% esigned for random. realtime read/write access to igata% Dust like

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elated #ools  pache 7ig

 pache Mahou

 pache &ive

 pache FooGee

 pache &ase  pache 5lume

5lume is for integrating large volume of log data%

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elated #ools  pache 7ig

 pache Mahou

 pache &ive

 pache FooGee

 pache &ase  pache 5lume

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elated #ools  pache 7ig

 pache Mahou

 pache &ive

 pache FooGee

 pache &ase  pache 5lume

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elated #ools  pache 7ig

 pache Mahou

 pache &ive

 pache FooGee

 pache &ase *calable Machine $earning $ibrar0

 pache 5lume

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elated #ools  pache 7ig

 pache Mahou

 pache &ive

 pache FooGee

 pache &ase  pache 5lume

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references ●

Introducing pache &adoop: the modern data operatin s0stem b0 r% mr wadalla

http://web%stanford%edu/class/ee4B,/bstracts/?????;@slides%pd ●

ig ata C u<< Words: What is Mapeduce b0 7inal ave  –

●

http://blog%s=lauthorit0%com

ahoo &adoop #utorial: