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[SQL/Oracle] Ϊʲô˵Spark SQLԶԶԽMPP SQL

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    2016-12-9 18:18
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    2016-7-8 07:07:06 | ֻ |ֻͼ | |Ķģʽ


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    ˵IJܣΪûԶԱȹ(Ļм򵥵˵)dzԴijָһεĵĽǶȥΪʲôSpark SQL ԶԶԽMPP  SQLġ
    Spark SQL MPP SQL ʵһάϡ֮
    MPP SQL Spark SQL һӼ
    Spark SQL ΪһֿԽĽ̬
    MPP SQL Spark SQL һӼ
    MPP SQL ҪļǺݵIJѯ⡣ʵʳ㻹ԼһЩδʻ㣬Ʃ뼶Ad-hoc ֮ࡣ
    ʵҵ
    ̽ҵ񣬱KPIάûѯݿѧݵ
    Ӫҵ񣬱籨(ںܶBIϵͳȫSQL)Ӫʱͳ
    ҵ񣬲ȽdzԡȻʵĵķӦҪһЩͳ࣬ѧϰȼ֧
    άҵ񣬱ʵʱѯ鿴ϵͳ־
    MPP SQL һƵģHAWQImpala ȶǻMPPܹġȻڴˡЩSpark SQL ĿǰѾˣMPP  SQL飬Spark SQLɵĺƯ
    Spark ȫƽ̨(ƯDataSource APIԼ̵Ŭ)Spark SQL  ϿԶԽ칹ԴзͲѯ
    ܿٶ˵䣺
    һЩиӴ洢ʽļĵƩCarbonData Spark SQL Ѿʵֺݵ뼶ѯ
    Spark  ͨTungstenĿŻ(ǴԶ)ٶԽԽͣJVMƩGCԽһͨoff-heapķʽ١
    Spark SQL MPP SQLϵIJҲԽԽС
    Spark SQL ΪһֿԽĽ̬
    Spark ͨʹDS(2.0ͳһDF   DSʹһSQL)ǿ˽⣬ζSQL(DS)ΪͳһĽʽʽѯѧϰȴ򳣼κһϵͳDzģҲɼSparkŶӵij
    еƪʵ²Spark ŶӶSpark core(RDD)Dzע̫ˣԿʼɧ
    ٻعͷdzһЩҵ
    ʵʱҵ
    ̽ҵ
    Ԥҵ
    Ӫҵ
    Щҵ񶼿ʹSpark ʵ֡ͳһĽӿڶDS(DF/SQL)DS/SQL һ׼òҹ㷺ռͽܵġ
    ȻSpark ҲһģԭʽAPI DF DS ҲAPI澭չDatabricks  ŶҲڻ˼ɳǰѾеĻۣڵһ
    ԱDS/SQL ѾΪRDD API  ⣬һͨõģͳһĽʽAPIʽʽѯѧϰȴҲǵһδͳһĿǰҲSparkƽ̨ϵʵ֣ǵĴݵʹúѧϰżһͣǧ
    RDD VS DS/SQL
    DS/SQL һȣ޵ıԣζSpark  ŶӿõŻҲζżͣԺ϶ȡõƽ⡣


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