Cov txheej txheem:
Video: Yuav ua li cas koj thauj cov ntaub ntawv tsis tsim nyog hauv Hadoop?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Muaj ntau ntau txoj hauv kev los import cov ntaub ntawv tsis tsim nyog rau hauv Hadoop, nyob ntawm koj qhov kev siv
- Siv HDFS plhaub cov lus txib xws li muab los yog copyFromLocal kom txav mus los cov ntaub ntawv rau hauv HDFS .
- Siv WebHDFS REST API rau daim ntawv thov kev koom ua ke.
- Siv Apache Flume.
- Siv cua daj cua dub, lub hom phiaj dav dav, txheej xwm txheej txheem.
Hauv qhov no, cov ntaub ntawv tsis tsim nyog khaws cia hauv Hadoop li cas?
Cov ntaub ntawv hauv HDFS yog khaws cia raws li cov ntaub ntawv. Hadoop tsis yuam kom muaj ib tug schema los yog ib tug qauv rau lub cov ntaub ntawv uas yuav tsum muaj khaws cia . Qhov no tso cai siv Hadoop rau structuring ib yam cov ntaub ntawv tsis tsim nyog thiab ces exporting lub semi-structured los yog structured cov ntaub ntawv mus rau hauv ib txwm databases rau kev soj ntsuam ntxiv.
Tsis tas li ntawd, koj yuav ua li cas thiaj li ua tau cov ntaub ntawv tsis tsim nyog? Hauv qab no yog 10 cov kauj ruam ua raws li uas yuav pab txheeb xyuas cov ntaub ntawv tsis tsim nyog rau kev lag luam ua lag luam ua tiav.
- Txiav txim siab los ntawm Cov Ntaub Ntawv.
- Tswj Koj Cov Ntaub Ntawv Tsis Muaj Kev Tshawb Fawb.
- Tshem tawm cov ntaub ntawv tsis muaj txiaj ntsig.
- Npaj cov ntaub ntawv rau Cia.
- Txiav txim siab thev naus laus zis rau cov ntaub ntawv stack thiab cia.
- Khaws tag nrho cov ntaub ntawv kom txog thaum khaws cia.
Ua li no, peb puas tuaj yeem khaws cov ntaub ntawv tsis tsim nyog hauv Hive?
Processing Un Structured Cov ntaub ntawv Siv Hive Yog li ntawd koj muaj nws, Hive tau siv los ua kom muaj txiaj ntsig zoo cov ntaub ntawv tsis tsim nyog . Rau cov kev xav tau ntau dua koj tej zaum yuav rov qab mus sau qee qhov kev cai UDF hloov. Muaj ntau yam txiaj ntsig rau kev siv qib siab ntawm abstraction dua li kev sau ntawv qib qis Daim Ntawv Qhia Txo cov lej.
Peb puas tuaj yeem hloov cov ntaub ntawv tsis tsim nyog rau cov ntaub ntawv tsim qauv?
Nyob rau theem no lub cov ntaub ntawv tsis tsim nyog hloov mus rau cov ntaub ntawv tsim nyog qhov twg cov pab pawg ntawm cov lus pom raws li lawv cov kev faib tawm yog muab tus nqi. Lo lus zoo yuav sib npaug 1, qhov tsis zoo -1 thiab nruab nrab 0. Qhov no unstructured cov ntaub ntawv tau tam sim no muab khaws cia thiab txheeb xyuas raws li koj xav nrog cov ntaub ntawv tsim nyog.
Pom zoo:
Vim li cas cov ntaub ntawv tsis tsim nyog tseem ceeb?
Cov ntaub ntawv tsis muaj txheej txheem tsis zoo los yog nkag mus tau yooj yim, tab sis cov tuam txhab uas txheeb xyuas cov ntaub ntawv no thiab muab tso rau hauv lawv cov ntaub ntawv kev tswj hwm thaj chaw tuaj yeem txhim kho cov neeg ua haujlwm tsim tau zoo. Nws tseem tuaj yeem pab cov lag luam khaws cov kev txiav txim siab tseem ceeb thiab cov pov thawj txhawb rau cov kev txiav txim siab ntawd
Vim li cas kem taw qhia cov ntaub ntawv khaws cia ua cov ntaub ntawv nkag ntawm disks sai dua li kab qhia cov ntaub ntawv khaws cia?
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