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DigdagでETL処理をする
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tosametal
July 19, 2019
Technology
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4.1k
DigdagでETL処理をする
データとML周辺エンジニアリングを考える会 #2
https://data-engineering.connpass.com/event/136756/
#data_ml_engineering
tosametal
July 19, 2019
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Transcript
DigdagͰETLॲཧΛ͢Δ σʔλͱMLपลΤϯδχΞϦϯάΛߟ͑Δձ #2 2019.07.19 தᠳଠ(@tosametal) גࣜձࣾϚΠΫϩΞυ ΞϓϦέʔγϣϯΤϯδχΞ
ϚΠΫϩΞυʹ͓͚Δػցֶश ࠂ৴γεςϜʹ͓͚ΔCTR༧ଌɺCVR༧ଌɺෆਖ਼ΫϦοΫͷݕग़ͳͲ
ϩάج൫ͷߏ Imp Server Click Server RTB Server Kafka Hadoop (σʔλΣΞϋε)
Digdag Hadoop (ੳج൫)
ϩάج൫ͷߏ Imp Server Click Server RTB Server Kafka Hadoop (σʔλΣΞϋε)
Digdag Hadoop (ੳج൫) at least once ϢχʔΫͳIDʹΑΔॏෳഉআ sessionͰཧ ႈͳॲཧ Kafka secondaryͰ kafkaΛࢦఆ jsonܗࣜͷ ߏԽσʔλ
Digdagͱ digϑΝΠϧʹએݴతʹϫʔΫϑϩʔΛهड़ Workflow as code εέδϡʔϧ࣮ߦɺϦΧόϦ UI͔Βਐḿͷ֬ೝ࠶࣮ߦ͕Մೳ ΦϖϨʔλΛࣗ࡞Մೳ
PostgreSQL ࣮ߦཤྺͳͲΛอଘ Task͝ͱʹhadoopΫϥΠΞϯτ ͱͳΔίϯςφΛ্ཱͪ͛Δ εέʔϧΞτՄೳ όον࣮ߦج൫ߏ
ෳࡶͳґଘؔΛ੍ޚͭͭ͠ ϫʔΫϑϩʔͷՄಡੑΛอͭ
ϓϩδΣΫτΛػೳ୯ҐͰׂ ϓϩδΣΫτͱ In Digdag, workflows are packaged together with other
files used in the workflows. The files can be anything such as SQL scripts, Python/Ruby/Shell scripts, configuration files, etc. This set of the workflow definitions is called project. ެࣜυΩϡϝϯτ(http://docs.digdag.io/)ΑΓҾ༻ ϚΠΫϩΞυͰݱࡏ60ݸͷϓϩδΣΫτ͕ಈ͍͍ͯΔ
ϓϩδΣΫτͷґଘؔ schedule: daily>: 12:00:00 +task1: _parallel: true +subtask1: call>: subtask1.dig
+subtask2: call>: subtask2.dig +task2: echo>: task finished successfully •callΦϖϨʔλΛ͏͜ͱͰdigϑΝΠϧ ͷׂΛߦ͏͜ͱ͕Մೳ •requireΛ͏ͱ͏গ͠ෳࡶͳDAGͷ දݱՄೳ subtask1 subtask2 task2
ϓϩδΣΫτؒͷґଘؔ ϓϩδΣΫτA ϓϩδΣΫτB ଞͷϓϩδΣ Ϋτͷ݁ՌΛݟΔ ͜ͱग़དྷͳ͍
ϓϩδΣΫτؒͷґଘؔ +touch_task: s3_touch>: bucket/flag/fileX +wait_task: s3_wait>: bucket/flag/fileX ϓϩδΣΫτB ϓϩδΣΫτA fileX
ࣗ࡞ΦϖϨʔλ ࢀߟ:https://github.com/ tosametal/digdag-plugins
ͦͷଞ ϫʔΫϑϩʔશମΛႈʹ͢Δ • hiveΫΤϦinsert overwrite • distcpoverwrite deleteΦϓγϣϯΛࢦఆ ϦτϥΠΛઃఆ͢Δ •
exponential interval
·ͱΊ • ϓϩδΣΫτංେԽ͠ͳ͍Α͏ʹػೳͰׂ • ϓϩδΣΫτؒͷґଘs3_waitͰղܾ • Α͘͏ػೳϓϥάΠϯΛ࡞Ζ͏
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