Video: Puas yog Presto xav tau Hive?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov ntaub ntawv hauv qab no tau txais kev txhawb nqa: Cov ntawv nyeem, SequenceFile, RCFile, ORC thiab Parquet. Tsis tas li ntawd, ib qho chaw taws teeb Hive metastore yog xav tau . Hom hauv zos lossis embedded tsis txaus siab. Presto ua tsis siv MapReduce thiab yog li tsuas yog xav tau HDFS.
Ua li no, Presto thiab Hive yog dab tsi?
Apache Hive : Data Warehouse Software rau Kev Nyeem Ntawv, Sau, thiab Tswj Cov Ntaub Ntawv Loj. Presto yog qhov qhib qhov chaw faib SQL query cav rau khiav kev sib tham sib analytic queries tiv thaiv cov ntaub ntawv los ntawm txhua qhov ntau thiab tsawg xws li gigabytes mus rau petabytes. Apache Hive thiab Presto tuaj yeem muab faib ua "Cov Ntaub Ntawv Loj" cov cuab yeej.
Ib yam li ntawd, puas siv MapReduce? Presto yog ib qho qhib qhov chaw sib luag SQL execution engine. Tsis zoo li Hive, Presto tsis yog siv tus daim ntawv qhia txo lub moj khaum rau nws ua. Hloov chaw, Presto ncaj qha nkag mus rau cov ntaub ntawv los ntawm ib tug tshwj xeeb faib lus nug cav uas zoo ib yam li cov uas pom nyob rau hauv coj mus muag parallel RDBMSs.
Khaws qhov no hauv kev txiav txim siab, puas yog Athena raws li Presto?
Technology yog raws ntawm qhov chaw qhib Facebook Presto los yog PrestoDB software. Muab lub neej no, Athena muab pab pawg serverless front-end SQL query engine rau ETL lossis ELT txheej txheem rau AWS S3 cov ntaub ntawv pas dej.
Puas yog Presto hauv nco?
Presto (los yog PrestoDB) yog qhov qhib, faib SQL query cav, tsim los ntawm hauv av mus rau cov lus nug ceev ceev tiv thaiv cov ntaub ntawv ntawm txhua qhov loj. Query execution khiav nyob rau hauv parallel tshaj ib tug ntshiab nco -based architecture, nrog rau feem ntau cov txiaj ntsig rov qab hauv vib nas this.
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