Video: Puas yog Java tseem ceeb rau cov ntaub ntawv loj?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Kev ntaus ntawv muaj zog. Java mob siab heev txog hom kev nyab xeeb. Qhov no feature yog zoo heev qhov tseem ceeb rau kev txhim kho Cov ntaub ntawv loj kev siv thiab tuav cov ntaub ntawv science hauv Java . Java yog ib hom lus uas muaj txiaj ntsig zoo uas siv los sau cov lej nrog cov khoom tsim tau siab (ETL) thiab cov txheej txheem rau kev kawm tshuab.
Ib yam li ntawd, koj tuaj yeem nug, Java puas tsim nyog rau cov ntaub ntawv loj?
Hadoop tau raug coj los siv Java . Feem ntau Cov ntaub ntawv loj lub moj khaum tau sau rau hauv Java . Tab sis, koj tsis tas yuav paub Java kawm Cov ntaub ntawv loj . MapReduce coding feem ntau yog qhov tseeb ua tiav hauv Java tab sis qhov no tsis yog qhov tsim nyog.
Yam lus programming twg yog qhov zoo tshaj rau cov ntaub ntawv loj? Sab saum toj 3 Cov Ntaub Ntawv Loj Cov Lus Qhia
- Java - Qhov kawg Cov Ntaub Ntawv Loj Cov Lus Qhia.
- Python - Qhov tseem ceeb yog nce.
- Scala: Mus rau Hybrid Language Way rau Cov Ntaub Ntawv Loj.
- Kab hauv qab.
Xav txog qhov no, programming puas xav tau rau cov ntaub ntawv loj?
Koj yuav tsum tau code los ua tus lej thiab txheeb xyuas cov lej nrog loj cov ntaub ntawv teeb. Qee hom lus koj yuav tsum nqis peev sijhawm thiab nyiaj txiag hauv kev kawm yog Python, R, Java, thiab C ++ ntawm lwm tus. Thaum kawg, muaj peev xwm xav li ib programmer yuav pab tau koj ua ib tug zoo cov ntaub ntawv loj kws tshuaj ntsuam.
Hadoop tuaj yeem kawm yam tsis muaj Java?
Teb - Yog: Vim Hadoop muaj ntau yam thev naus laus zis rau Kev Ua Cov Ntaub Ntawv thiab Cov Ntaub Ntawv Tswj Xyuas xws li MapReduce, Hive, Pig, Oozie workflow, Zookeeper, Flume, Kafka thiab lwm yam. Yog tias koj ua tsis paub Java ces koj tau kawm hadoop kom paub meej los ntawm lwm yam Programming Language. Yog li ntawd, koj tuaj yeem kawm Hadoop yam tsis muaj Java.
Pom zoo:
Dab tsi yog kev noj cov ntaub ntawv hauv cov ntaub ntawv loj?
Cov ntaub ntawv ingestion yog tus txheej txheem ntawm tau txais thiab import cov ntaub ntawv rau tam sim ntawd siv los yog cia nyob rau hauv ib tug database. Txhawm rau noj ib yam dab tsi yog 'coj ib yam dab tsi los yog nqus ib yam dab tsi.' Cov ntaub ntawv tuaj yeem xa tawm hauv lub sijhawm tiag tiag lossis noj hauv cov khoom siv
Puas yog TIFF cov ntaub ntawv yog cov ntaub ntawv vector?
TIF - (los yog TIFF) sawv cev rau Tagged Image File Format thiab yog cov ntaub ntawv loj loj. Cov ntaub ntawv TIF feem ntau yog siv rau cov duab hauv kev luam ntawv vim tias cov ntaub ntawv tsis poob cov ntaub ntawv lossis zoo li JPEG ua. Nws yog cov ntaub ntawv vector uas tuaj yeem muaj cov ntawv nyeem nrog rau cov duab thiab cov duab kos
Dab tsi yog cov txiaj ntsig tseem ceeb ntawm kev siv phau ntawv txhais lus cov ntaub ntawv?
Ib phau ntawv txhais lus tsim tau tuaj yeem muab cov koom haum thiab cov lag luam muaj txiaj ntsig ntau, suav nrog: Txhim kho cov ntaub ntawv zoo. Txhim kho kev ntseeg siab ntawm cov ntaub ntawv ncaj ncees. Txhim kho cov ntaub ntawv thiab kev tswj xyuas. Txo cov ntaub ntawv redundancy. Rov qab siv cov ntaub ntawv. Kev sib raug zoo ntawm kev siv cov ntaub ntawv. Kev txheeb xyuas cov ntaub ntawv yooj yim dua. Txhim kho kev txiav txim siab raws li cov ntaub ntawv zoo dua
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?
Kem oriented databases (aka columnar databases) yog qhov tsim nyog rau kev ntsuas kev ua haujlwm ntau dua vim tias cov ntaub ntawv hom ntawv (kem hom) qiv nws tus kheej kom nrawm dua cov lus nug ua - scans, aggregation thiab lwm yam. Ntawm qhov tod tes, kab oriented databases khaws ib kab (thiab tag nrho nws. kab) contiguously
Vim li cas cov ntaub ntawv zoo tseem ceeb heev rau kev sau cov ntaub ntawv txheeb cais?
Cov ntaub ntawv muaj txiaj ntsig zoo yuav ua kom muaj txiaj ntsig ntau dua hauv kev tsav lub tuam txhab kev vam meej vim yog kev vam khom ntawm qhov tseeb-raws li kev txiav txim siab, tsis yog kev coj cwj pwm lossis tib neeg kev xav. Ua kom tiav: Xyuas kom tsis muaj qhov khoob ntawm cov ntaub ntawv los ntawm qhov yuav tsum tau sau thiab qhov twg tau sau tiag