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MySQLからBigQueryの同期を差分更新にしたら4倍高速になった話 / Sync fro...
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Takehiro Shiozaki
May 16, 2017
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MySQLからBigQueryの同期を差分更新にしたら4倍高速になった話 / Sync from MySQL to BigQuery become 4x faster by incremental updating
Embulk Meetup Tokyo #3のLTです
Takehiro Shiozaki
May 16, 2017
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Transcript
.Z42-͔Β#JH2VFSZͷಉظΛ ࠩߋ৽ʹͨ͠Βഒߴʹͳͬͨ &NCVML.FFUVQ5PLZP VASILY,Inc. Ԙ㟒݈߂
Ԙ㟒݈߂ w ʹ7"4*-:ʹ৽ଔೖࣾ w ීஈͷ͓ࣄ3BJMTͰXFC"1*࡞ͬͨΓɺ4PMSͷϝϯςͨ͠Γɺ 5BCMFBV#JH2VFSZͰμογϡϘʔυ࡞ͬͨΓ w &NCVMLࠓͷ݄ࠒʹ৮Γ࢝Ί͔ͨΓ 7"4*-: *OD
TPGUXBSFFOHJOFFS
*20/հ Ҏ্ͷϑΝογϣϯ&$αΠτ͔Β ྦྷܭ ສΛ͑ΔΛܝࡌ ݄ؒສਓҎ্͕ར༻͢Δຊ࠷େڃͷϑΝογϣϯαΠτ
σʔλऩूج൫ͷհ Πϕϯτϩά &-# "1*4FSWFS -PH "HHSFHBUPS 8FC4FSWFS #JH2VFSZ 3FDPNNFOE
σʔλੳج൫ͷհ Ϛελʔσʔλ 3%4 .Z42- %BUBUSBOTGFS TFSWFS ($4 #JH2VFSZ Γ͔͚͍ͯΔൿͷͨΕঢ়ଶ ɾNZTRMEVNQ
US TFE FUDΛෳࡶʹΈ߹Θ͍ͤͯΔ ɾςʔϒϧΛׂͯ͠సૹ͢ΔઃఆΛϋʔυίʔσΟϯά
σʔλੳج൫ͷհ Ϛελʔσʔλ 3%4 .Z42- %BUBUSBOTGFS TFSWFS ($4 #JH2VFSZ ʹ&NCVMLΛಋೖ ɾಉظόον͕མͪΔ͜ͱ͕΄΅ͳ͘ͳΔ
͔͜͜ΒϝΠϯςʔϚ
ϚελʔσʔλͷಉظΛ ߴԽ͍ͨ͠ w ϢʔβʔͷՁͷఏڙΛߴԽ͢ΔͨΊ w ݱঢ়ใͷಉظ͚ͩͰ࣌ؒ ສߦ (#
࣌ؒܭଌ 3%4 .Z42- %BUBUSBOTGFS TFSWFS ($4 #JH2VFSZ NJO .Z42-ͷςʔϒϧΛμϯϓ NJO
μϯϓΛ($4ʹΞοϓϩʔυ NJO ($4͔Β#JH2VFSZʹϩʔυ
.Z42-ͷμϯϓ͕ ϘτϧωοΫ w Ϛελʔσʔλͷಉظຖߦ͍ͬͯΔͨΊɺ ࡢͱಉ͡σʔλಉظ͢Δඞཁͳ͠ w 3VCZPO3BJMTΛ༻͍ͯ͠ΔͷͰɺ VQEBUFE@BUʹͦͷߦͷߋ৽࣌ࠁ͕ೖ͍ͬͯΔ
ࠩߋ৽ͯ͠ΈΔ ςʔϒϧ ࠩͷΈ ςʔϒϧ લ ςʔϒϧͷϚʔδ 0-"1ؔΛ׆༻ લճͷಉظҎ߱ͷσʔλͷΈ where: "updated_at
> ..."
લճͷಉظҎ߱ͷσʔλΛऔಘ w JOQVUQMVHJONZTRMͷઃఆʹXIFSFΛՃ͢Δ w औಘ͢Δඞཁͷ͋Δߦ͕ҎԼʹͳΔ in: type: mysql host: example.com
user: user_name password: ******** database: db_name table: items select: "*" where: "updated_at > '2017-05-15 00:00:00'" # この行を追加
42-ͰςʔϒϧΛϚʔδ w ͭͷςʔϒϧΛVOJPOBMMͰ݁߹͠ɺओΩʔͰ QBSUJUJPOCZͯ͠৽͍͠ߦͷΈΛબ w ͜ͷ42-ͷ݁ՌΛݩͷςʔϒϧʹॻ͖͢ select * from (
select *, row_number() over (partition by id order by updated_at desc) as rn from ( select * from tmp.items union all select * from mysql.items ) ) where rn = 1
݁Ռ 3%4 .Z42- %BUBUSBOTGFS TFSWFS ($4 #JH2VFSZ NJO ˠNJO NJO
ˠNJO NJO ˠNJO શମͰഒͷߴԽ INJOˠNJO ςʔϒϧͷϚʔδ NJOˠNJO
৽ͨͳ՝ w Ϛελʔσʔλͷಉظ͕ෳࡶʹͳΓͦ͏ w ֤ॲཧͷʮྲྀΕʯΛཧ͢Δπʔϧ͕ཉ͍͠ %JHEBH "JSqPX -VJHJ
·ͱΊ w &NCVMLόϧΫసૹͷҋΛরΒͯ͘͠ΕΔπʔϧ w σʔλͷࠩߋ৽ʹΑͬͯഒߴԽ w ӡ༻ϑΣʔζͰଞͷπʔϧͱͷ࿈ܞ͕ඞཁ