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Jubatusよもやま話 〜OSSのミドルウェア開発〜
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Shuzo Kashihara
December 23, 2017
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Jubatusよもやま話 〜OSSのミドルウェア開発〜
第1回Webシステムアーキテクチャ研究会
Shuzo Kashihara
December 23, 2017
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Transcript
JubatusΑ· ʙOSSͷϛυϧΣΞ։ൃʙ 201712݄23 ୈ1ճΣϒγεςϜΞʔΩςΫνϟݚڀձ ദݪलଂʢ@suma90hʣ 1
ࣗݾհ • Shuzo Kashihara (ദݪ लଂ, @suma90h) • ઐ •
LinuxγεςϜϓϩάϥϛϯά(userland): C, C++(03) • Jenkins͓͡͞Μ • ٕज़എܠ • PFI࣌ʙɿશจݕࡧɾϨίϝϯυΤϯδϯͷ։ൃʢςετʣɺJubatus։ൃɺࣾΣϒΞϓϦ ͳͲ • झຯͳͲ • ಡॻ: ྺ࢙, Պֶ, খઆ • ఱମࣸਅ 2
Jubatusͱ • ػցֶशʢࢄʣͷϛυϧΣΞٴͼϑϨʔϜϫʔΫ • αʔόʗΫϥΠΞϯτͷར༻ܗଶΛऔΓɺͦͷؒRPCͰΓ औΓ͢Δ • JubatusΛϥΠϒϥϦͱͯ͠ݺͼग़ͯ͑͠ΔCPython֦ு͋ Δ [Ebedded
Jubatus Python] • ࢄͨ͠αʔόͷΠϯελϯεͰฒྻʹֶशɾਪͰ͖Δͷ͕εΰ Π • http://jubat.us/ 3
WSAݚͰ͍ͨ͜͠ͱ • OSSʢϛυϧΣΞΛྫʹ͢ΔʣͷνʔϜ։ൃʹ͓͚Δ • νʔϜϏϧσΟϯάʗνʔϜ։ൃʹ͓͚Δϊϋɾݟ ʹؔͯ͠ɺ • OSSϛυϧΣΞ։ൃʹ͓͚Δҙࢤܾఆͷํɺٞใڞ༗ͷํͷհ • ιϑτΣΞͷ࣭Մ༻ੑʢSLAʣΆ͍͜ͱͷ࣭ɾఏىʢٞʣ
ʹ͍ͭͯҰൠԽ͍ͯͨ͠͠ɻલऀׂͱνʔϜӡ༻ͳύλʔϯͳͷʹରͯ͠ɺޙऀ ٕज़͕͋ͬͯͲ͏Ξϓϩʔν͢Δ͔ͱ͍͏ͱͳ͍ͬͯΔɻલऀʹ͍ͭͯ༧ ߘʹॻ͍ͨͨΊɺεϥΠυͰׂѪͯ͠ςʔϚΛߜͬͨ 4
։ൃνʔϜ͕࢝·Δͱ͖ • ࠷ॳ͔Θ͔Βͳ͍͕ɺϧʔϧɾ։ൃϓϩηεΛ࡞ͬͨΓܾΊΔ͜ͱ͕࢝·Δʢؾ͕͢Δʣ • ୭͔ҰਓͷΦϦδφϧ͕͋Γɺ͔ͦ͜Β͋Δఔ۩ମੑ͕͋Δঢ়ଶͰ࢝·Δ͜ͱ͋Δ • ར༻͢ΔαʔϏεɺϓϥοτϑΥʔϜ҉ͷ͏ͪʹܾ·Δ͜ͱ͋Δ • GitHub? GitLab?ɺOSʢLinux?
Windows?ʣɺϛυϧΣΞʢApache? Nginx?ʣɺϓϩάϥϛϯάݴޠ • ʢಛʹOSSͷʣιϑτΣΞͱܾͯ͠ΊΔɺܾ·Δͷͱͯ͠ҎԼͷΑ͏ͳͷ͕͋Δ • ໊ɺίʔυωʔϜɺϥΠηϯε • ίʔσΟϯάنʢελΠϧʣ • Ϗϧυํ๏࠾༻͢Δπʔϧ܈ʢϓϩάϥϛϯάݴޠʹґଘ͢Δʣ • ϦϦʔεํ๏ɺόʔδϣχϯάɺυΩϡϝϯςʔγϣϯ • ιʔείʔυ܈Λϗετ͢ΔॴʢGitHubʣ • ෦ͷϨϏϡʔํ๏ɺOSSͷ߹֎෦͔ΒͷߩݙͷରԠํ๏ etc • ʢҰൠԽ͍ͨ͠༰Ͱͳ͘ɺ୯ʹ͋ΔΑͶɺͱ͍͏ྻڍͰ͢ʣ 5
͍͔ʹͯ͠νʔϜ։ൃΛճ͔͢ • ڀۃతʹνʔϜશһ͕෦ɾ֎෦ͷࡶ༻ʹؾΛऔΒΕͣʹύϑΥʔϚϯεΛൃشͰ͖Δ͔ɺͩͱࢥ͍ͬͯΔ • ՝ • νʔϜΛ࡞Δͱ͖Ͳ͏͍͔ͬͯ͘ [→ 2017༧ߘ] •
ίʔσΟϯάҎ֎ʹൃੜ͢ΔҰൠతͳࡶʹର͢ΔͲ͏ͯ͠ൃੜ͢ΔࣄͷରԠ • ղܾํ๏ • ఆܕతͳύλʔϯʹର͢ΔԠΛ͋Β͔͡ΊܾΊͨΓɺࣗಈԽͰ͖Δͱ͜Ζͨ͠Γ͢Δ • ϏϧυϦϦʔεͳΒࣗಈԽͷΈΛɺOSSͷߩݙͳΒͲ͏͍͏ϨϏϡʔ߲ɾํͳΒϚʔδͰ͖Δ ͷ͔νʔϜͰ͍͍ͪͪ૬ஊ͠ͳ͍͍ͯ͘ϑοτϫʔΫͷ͍ܰମ੍Λ࡞Δ • ߟ͑Δ͖ͱ͜ΖͰ಄Λ͍ɺ࡞ۀͰྲྀͯ͠ߦ͑Δ෦ʹ࣌ؒΛ͔͚ͳ͍ͰιϑτΣΞΛ։ൃ͍ͯ͘͠ • ࠔͬͨͱ͖Ϧʔμʔʹղܾͯ͠͠·͏ʢϦʔμʔͷෛ୲͕͋Δͱ͍͏՝Δʣ 6
OSS։ൃίϛϡχςΟʹ͓͚Δ ҙࢥܾఆ • ։ൃνʔϜશൠͰҙࢥܾఆΛഭΒΕΔͱ͖ʢίϛϡχςΟͰʣ • ։ൃରͷઃܭΛܾΊͯߦಈ͢Δͱ͖ʢٕज़తͳͷͰʣ ͷ2ύλʔϯʹͬ͘͟ΓͱେผͰ͖Δͱࢥ͏ 7
ҙࢥܾఆϙϦγʔͷߟ͑ํ • ୡ͍ͨ͜͠ͱɾΓ͍ͨ͜ͱ • ॏཁɾॏཁͰͳ͍ࣄʹ͍ͭͯͷɺνʔϜͰͷਝͳҙࢥܾఆ͕͍ͨ͠ • νʔϜ։ൃ͋Δ͋Δ • ϒϨΠϯετʔϛϯάɺ͘͠ΧΦε •
ࣗసंஔ͖ͷٞ ʹͳ͕ͬͯٞऩଋ͠ͳ͍ • ղܾࡦ • 1໊ʙ3໊΄Ͳͦͷʹڧͦ͏ͳ୲ϝϯόʔΛબग़ͯ͠ɺͦͷϝϯόʔ͔Βఏग़͞Εͨ ఏҊΛνʔϜͰٞ͢ΔʢΏΔ͍ΞΠσΟΞ͕۩ମతʹݻ·͖͍ͬͯͯΔͷͰɺνʔϜ શମͰϨϏϡʔ͍͢͠ʣ • ຊʹࠔͬͨͱ͖Ϧʔμʔ͕ܾఆ͢Δʢ※ wikipedia: ༏͍͠ऴͷಠࡋऀ ) 8
։ൃઃܭΛٞ͢Δͱ͖ • ୡ͍ͨ͜͠ͱɾΓ͍ͨ͜ͱ • ৽ن࣮ɾઃܭͷݟ͠ͳͲɺιϑτΣΞʹେ͖ͳมߋΛՃ͍͑ͨͱ͖ͷઃܭใͷڞ༗ͱ ϨϏϡʔΛ͍ͨ͠ • ͪΖΜɺνʔϜϝϯόʔશһͰϗϫΠτϘʔυ্ͰϒϨΠϯετʔϛϯά͢Δͷඇݱ࣮త • ղܾࡦ
• σβΠϯυΩϡϝϯτͷ࡞ͱڞ༗ • ίʔυΛॻ͘લʹσβΠϯυΩϡϝϯτΛ࡞͠ɺڞ༗͠ɺϨϏϡʔͯ͠Β͏ελΠϧ • ୈҰʹࣥචऀͷ಄ͷதͰɺਓʹಡΊΔܗͷઃܭจॻ͕͢Δ • ࣍ʹɺͦΕΛͬͯνʔϜϝϯόʔ͕ઃܭΛϨϏϡʔͰ͖Δঢ়ଶʹͳΔ • ઃܭͷڞ༗ͱٞGoݴޠͷߩݙऀ͚จॻͰਪ͞Ε͍ͯΔ 9
ʲօ༷ͷ࣭ɾఏىʳ ιϑτΣΞͷ࣭ɾՄ༻ੑΛͲ͏ҡ͍͔࣋ͯ͘͠ • ۜͷؙ͕ͳ͍͜ͱʹରͯ͠Ͳ͏ΞϓϩʔνΛͱΔ͔ʢόάͷͳ͍͜ͱɺՄ༻ੑ, MTBFʁʣ ʮͲ͜·Ͱςετ ͢ΕऴΘΓ͕͘Δͷʁʯ • ྃʹର͢Δࢦඪ͋Δʢৄ͘͠ͳ͍Ͱ͢ɻͦΕͰɺΫϦΞͨ͠Βຊʹ͍͍ͷʁɹͱ͍͏͋Δʣ •
JubatusͰςετʹՃ͑ɺQPS(Query per Second)ݟ͍ͯͨ • ґଘϥΠϒϥϦͷόάιϑτΣΞʹӨڹ͢Δ͜ͱ͕͋ΔɻґଘϥΠϒϥϦؚΊͨ • Trusted computing baseͱ͍͏֓೦ͱɺͦΕΛࢀߟʹγεςϜͷྖҬͰ৴པ͢Δ෦Λݶఆ͢Δߟ͑ํͲ͏͔ ʢ͓ͦΒ͘ҙࣝͯ͠ͳ࣮ͯ͘ફ͍ͯ͠Δʣ • ྫ͑ɺCPU/OS(Linux)όά͍ͬͯͳ͍ͷͱͯ͠ɺ৴པͰ͖Δͱߟ͑Δ • ͘͠ɺόάͬͯͯସՄೳͳͷͱͯ͠ɺγεςϜͱͯ͠ӅṭՄೳͳͷͱߟ͑Δ • ϓϩάϥϛϯάͷํ๏ɾιϑτΣΞςετͷख๏ɾγεςϜશମͷෆ۩߹ʹର͢ΔΞϓϩʔν(Chaos Monkey) ͳͲଘࡏ͍ͯ͠Δ [2017༧ߘ] • ςετέʔεϨϕϧͰɺೖྗύλʔϯΛཚͰ͍͘Βੜͯ͠ॏେͳόάʹ໓ଟʹͨΒͳ͍ʢܦݧʣ 10
·ͱΊ • OSSͰͷҙࢤܾఆɺઃܭϨϏϡʔํ๏Λհͨ͠ • [ҙ]ҙࢤܾఆʹ͍ͭͯɺνʔϜϝϯόʔ͕ࣗൃతʹߩݙ Ͱ͖ΔϝϯόʔͰߏ͞ΕΔͱ҉ͷ͏ͪʹԾఆ͍ͯ͠Δ͔ • σβΠϯυΩϡϝϯτͱϨϏϡʔମ੍ʹ͍ͭͯհͨ͠ •
ଞʹڞ༗͍ͨ͠ςʔϚ͋Δ͕ɺ༧ߘΛࢀর • ࣭ɾఏىͱ͍͏ܗͰɺςετͷྃՄ༻ੑͷҡ࣋ͱɺղ ܾ͢Δ͔͠Εͳ͍Ξϓϩʔνʹ͍ͭͯऔΓ্͛ͨ 11