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1SPpMF ໊લ ଜऺฏ4IVIFJ,JNVSB IUUQTXXXGBDFCPPLDPNTIVIFJLJNVSB ॴଐ גࣜձࣾαΠόʔΤʔδΣϯτ
ΞυςΫຊ෦"E5FDI4UVEJP %ZOBMZTU։ൃऀ ܦྺ dࠂޮՌܭଌγεςϜͷ։ൃ d1$ͷ35#ࠂ৴ʹ͓͚Δ࠷దԽΤϯδϯͷઃܭ։ൃ d41͚ւ֎%41γεςϜͷઃܭ։ൃ d41͚μΠφϛοΫϦλʔήςΟϯάࠂ৴γεςϜͷઃܭ։ൃ -
"HFOEBPGUIJTTFTTJPO ΦϯϥΠϯࠂͷ͍· ࡢࠓͷࠂ৴ʹٻΊΒΕΔ͜ͱԿ͔ʁ %ZOBMZTU͕ఏڙ͢ΔՁͱԿ͔ʁ %ZOBMZTUͷγεςϜߏஙʹ͓͚Δίϯηϓτ γεςϜͷେنԽʹͬͯ໘ͨ͠՝ͨͪ ϩάͷྔ͚ͩͰͳ͘ϩάͷ༰͕ଟ༷Խ͢Δ͜ͱʹରԠ͠ʹ͍͘ σʔλͷར༻༻్ͷଟ༷Խͱॊೈੑͷ Ϩϙʔτूܭج൫㱠ΞυϗοΫੳج൫ "NB[PO,JOFTJTͷ࠾༻ͱͦͷಋೖͷաఔ
ͳͥ,JOFTJTͰղܾͰ͖Δͱߟ͔͑ͨʁ ,JOFTJTΛίΞͱ͢Δσʔλ׆༻ઓུͱ࣮ݱͨ͠γεςϜʹ͍ͭͯ -
8IBU`TIBQQFOJOH ΑΓࡉ͔ͳλʔήςΟϯά͕Մೳͳ࣌ 8)ʹ͓͚Δ8IP͕ಛʹॏཁࢹ͞ΕΔ Ϣʔβͷߦಈʹجͮ͘ࠂ৴ ࠂ༧ࢉͷదͳͱ30*ޮͷ্ ࠂग़ߘͷҙࢥܾఆϦΞϧλΠϜԽdNTFDPSEJFd ͍ͭ Ͳ͜Ͱ ͩΕʹ ͲΜͳࠂΛ͍͘ΒͰग़͢PSग़͞ͳ͍
3FBM5JNF#JEEJOHऔҾͨΓલͷੈք ࠂ৴ٕज़ʑɺߴʹෳࡶʹ "SFZPVBOVTFSXIPN XFTIPVMEEFMJWFSPVSBE -
,FZ$PODFQUGPS%ZOBMZTU4ZTUFN"SDIJUFDUVSF γεςϜӡ༻ίετখ͘͞ dνʔϜόϥϯεΛ࠷దԽɺ0QT %FW #J[d গ͠ઌΛݟӽͨ͠εέʔϥϏϦςΟ
dεϐʔυΛ༏ઌͯ͠ҙਤతʹແࢹͯ͠ෛ࠴Λ࡞ΔέʔεͪΖΜ͋Γ·͢d ࡞Βͳͯ͘ࡁΉͷ࡞Βͳ͍ dͦͦ࡞Βͳ͚Εϝϯς͠ͳͯ͘Α͍d d"8440"ͳͷͰιϦϡʔγϣϯ୳͢ɺ͘͠૬ஊ͢Εݟ͔ͭΔd -
%BUBWPMVNF%BUBWBSJBUJPO B[B B[D ʜ GPSFBDITFSWFS ʜ ৴ɾܭଌϩάͷσʔλӡൖϑϩʔ ᶃqVFOUEESJWFOEBUBPQFSBUJPO
ᶄ43FETIJGUͷܧଓ$01:աఔͰςʔϒϧఆٛΛ༰қʹมߋͰ͖ͳ͍ σʔλͷྔͷྀ̋σʔλͷ࣭ͷྀ˚ USBDLJOHMPHT GPSCJHEBUBBOBMZTJT PO3FETIJGU$MVTUFS TFOENFTTBHF MPHJTVQMPBEFE DPQZXPSLFS ˞ʰ͋ͷใཉ͍͠ͳ͊ɻɻʱ˰ΧϥϜΛՃʂʁ -
%J⒎FSFOURVFSZSFRVJSFNFOUGSPNTBNFEBUBTPVSDF B[B B[D ʜ GPSFBDITFSWFS BDDFTTMPHT ʜ ৴࣮ੳͷͨΊͷΫΤϦ ؤுΕ3FETIJGUͰͳΜͰͰ্ཱ͖ͨͪ͛ظʂ˰ͦΖͦΖݟ࣌͢ظʁ USBDLJOHMPHT
GPSCJHEBUBBOBMZTJT PO3FETIJGU$MVTUFS TFOENFTTBHF MPHJTVQMPBEFE DPQZXPSLFS ΞυϗοΫΫΤϦͱۀܥΫΤϦ͕ಉډ͍ͯ͠ΔͷͦΖͦΖݶք ˞8-.ͳͲͰͷΫΤϦ༏ઌௐ தؒςʔϒϧઃܭͳͲͰͲ͏ʹͳΒͳ͍ਫ਼ਆతෛ୲ ࠂओ༷͚ͷϨϙʔτूܭΫΤϦ -
σʔλӡൖϑϩʔͷ֦ுdେ·͔ͳྲྀΕd B[B B[D ʜ DPOTVNFS" DPOTVNFS# DPOTVNFS$ BTQSPEVDFS DPOTVNFS% DPOTVNFS&
োੑͷߴ͍ϩάऩूύΠϓϥΠϯͱͯ͠ͷׂʂ ϩάऩूαʔό͍ΒͣɺqVFOUECVGGFSͯ͠1VU3FDPSET -
σʔλӡൖϑϩʔͷ֦ுdࢼߦࡨޡͷաఔd B[B B[D ʜ DPOTVNFS" DPOTVNFS# DPOTVNFS$ BTQSPEVDFS DPOTVNFS% DPOTVNFS&
1VU3FDPSET"1*͕·ͩͳ͔ͬͨ ˰qVFOUEͰQVU͕͍͔ͭͳ͍ qVFOUEͰεϨουΛ૿͢ͷͪΐͬͱ ˰ΞϓϦέʔγϣϯαʔόͰͷ1VU3FDPSEͰҰ࣌ରॲ 1VU3FDPSET"1*͕ϦϦʔε͞ΕΔ˞"844%,GPS3VCZW͔Β ˰Ͳ͏ߟ͑ͯCVGGFSͯ͠qVFOUEͰॲཧͤ͞Δͷ͕҆ఆ͢Δʂ -
σʔλӡൖϑϩʔͷ֦ுd#FGPSF"GUFSd B[B B[D ʜ USBDLJOHMPHT TFOENFTTBHF MPHJTVQMPBEFE DPQZXPSLFS B[B B[D
ʜ TVQMPBEDPOTVNFS USBDLJOHMPHT DPOUJOVFTDPQZ #FGPSF "GUFS -
σʔλӡൖϑϩʔͷ֦ுd#FGPSF"GUFSd B[B B[D ʜ USBDLJOHMPHT TFOENFTTBHF MPHJTVQMPBEFE DPQZXPSLFS B[B B[D
ʜ TVQMPBEDPOTVNFS USBDLJOHMPHT DPOUJOVFTDPQZ #FGPSF "GUFS 4ͷσʔλͷӡͼํΛ,JOFTJTΛܦ༝͢Δํࣜʹมߋ ˰,JOFTJT$POTVNFSΞϓϦΛ࣮͠ɺϦΞϧλΠϜͳԿ͔Λ͢ΔڥΛ࣮ݱ ˰qVFOUEͷׂͷཧ 424 4ͱͷJOUFHSBUJPOͷղফ ,JOFTJT1SPEVDFSͱͯ͠ͷׂ -
ੳج൫ͱूܭج൫ͷׂͷ B[B B[D ʜ TVQMPBEDPOTVNFS USBDLJOHMPHT 3VOOJOH4QBSLXJUI :"3/PO&.3$MVTUFS DPOUJOVFTDPQZ ఆܗϨϙʔτۀܥॲཧΛ3FETIJGU͔Β&.3
˰ੳܥΫΤϦΛੳऀ͕ετϨεͳ͛͘ΒΕΔڥͷ࣮ݱ ˰3FETIJGUʹఆظతʹ$01:ͯ͠ϩάσʔλΛͨΊΔ ˞ Γ͍ͨ͜ͱΛ42-ҰຊͰهड़Ͱ ͖ΔͰ3FETIJGUੳऀϑϨϯ υϦʔ ˞ ੳΞϓϩʔνͷ͔Βҙ֎ͱ ੜϩάΛىͱͨ͠ੳ͕ଟΊ 3FQPSUJOH SFQPSUBQJ BOBMZTU BEWFSUJTFST -
ϦΞϧλΠϜσʔλॲཧΞϓϦέʔγϣϯͷಋೖྫ ࠂओ༷αΠτΛ๚ΕͨϢʔβ͕Έ͕ͨ %ZOBMZTUͰཧ͢Δ%#ʹ͋Δ͔൱͔ΛνΣοΫ͍ͨ͠ TVQMPBEDPOTVNFS DPWFSBHFDPVOUDPOTVNFS GPPUQSJOUTUSFBN JOQVU qVFOUEͰ1VU3FDPSET
ඵؒdSFDPSE͘Β͍QVU TIBSEͰTUSFBNΛ࡞ PVUQVU ϓϩηεͰDPOTVNFSΛ&$্Ͱ࣮ߦͤ͞Δ TDBMBBQQ ,$-Ͱ࣮ EBFNPOԽͯ͠QSPDFTTཧ TUSFBN͔ΒҰׅͰ(FU3FDPSET͠ɺ ·ͱΊͯॲཧͯ݁͠ՌΛ&MBTUJ$BDIF -
ϦΞϧλΠϜσʔλॲཧΞϓϦέʔγϣϯͷಋೖྫ DPWFSBHFDPVOUDPOTVNFSQSPD GPPUQSJOUTUSFBN ,$-ͷڍಈཧղ CVJMEͨ͠ΞϓϦͷ&$ͷσϓϩΠQSPD ॳճىಈ࣌ʹ%ZOBNP%#DIFDLQPJOUཧ༻ͷUBCMF͕࡞͞ΕΔ νΣοΫϙΠϯτΛߋ৽͠ͳ͕ΒΞϓϦTIBSEݸͷσʔλΛॲཧ ͏ҰͭΞϓϦΛ&$ʹσϓϩΠQSPD
DIFDLQPJOUཧςʔϒϧΛࢀরͯ͠ɺݸTIBSEΛୣͬͯॲཧ։࢝ TIBSEQSPDͰॲཧ͞ΕΔঢ়ଶʹͳΔ QSPDΛTIVUEPXO͢ΔͱQSPD͕TIBSEݸॲཧ࢝͠ΊΔ DPWFSBHFDPVOUDPOTVNFSQSPD GFFEDPWFSBHFTUPSF DIFDLQPJOUNBOBHFUBCMF leaseKey checkpoint leaseOwner shard-0000 seq-abcd123 consumer01:xxx x shard-0001 seq-efgh456 consumer02:yyy y ˞ ͲͷTIBSEΛͲ͜·ͰͩΕ͕ॲཧͨ͠ʁ ˞,$-ඇৗʹߴػೳͰศར -
ϦΞϧλΠϜσʔλॲཧΞϓϦέʔγϣϯͷಋೖྫ DPWFSBHFDPVOUDPOTVNFSQSPD GPPUQSJOUTUSFBN ,$-ར༻࣌ͷϋϚͬͨϙΠϯτ ϐʔΫ࣌ʹҰํͷQSPD͕ؤுΓɺଞํͷQSPD͕ؤுΒͳ͍ %ZOBNP%#ͷDIFDLQPJOUཧςʔϒϧͷ8SJUFΩϟύΦʔόʔ ॳظ͕8SJUF$BQBDJUZͰ࡞͞ΕΔͷͰॲཧͷ୯Ґɺ༰ʹΑͬͯͰΓͳ͍ͷͰ૿͢
৽͍͠όʔγϣϯͷΞϓϦΛσϓϩΠͨ͠ΒͲ͏ͳΔͷʁ QSPD QSPDΛىಈ TIBSEݸͷ߹ݹ͍QSPD QSPD͕ࣄΛୣΘΕΔ ࣮࣭SPMMJOHVQEBUFతͳڍಈΛࣔ͢ QSPD QSPDΛด͔ͯ͡ΒQSPD QSPDΛىಈͨ͠΄͏͕͍͍ͱ͖͋Δ͔ʁ TIBSE͕Γͳ͍ͷͰBQJܦ༝ͰTQMJUTIBSEͨ͠ɺΞϓϦͲ͏ͳΔʁ DIFDLQPJOUཧςʔϒϧ͕Α͠ͳʹͬͯ͘ΕΔ TQMJUTIBSE͢ΔલͷTIBSEͷॲཧΛऴ͑ͨΒ৽͍͠TIBSEͰͷॲཧΛҾ͖ܧ͙ DPWFSBHFDPVOUDPOTVNFSQSPD GFFEDPWFSBHFTUPSF DIFDLQPJOUNBOBHFUBCMF ˞ ͜ͷTIBSEͷͩΕʁ ˞,$-ඇৗʹߴػೳͰศར leaseKey checkpoint leaseOwner parentShardId shard-0002 seq-abcd123 consumer01:xx xx {"shard-0000"} shard-0003 seq-efgh456 consumer02:yy yy {"shard-0000"} -
ϦΞϧλΠϜσʔλॲཧΞϓϦέʔγϣϯͷಋೖྫ ୈࡾऀ৴ͱ35#৴ ߹ΘͤͯͲΕ͘Β͍৴Մೳͳػձ͕͋ͬͨͷ͔Γ͍ͨʂ BEDBOEJEBUFDPOTVNFS BETUSFBN CJETUSFBN
CJEDBOEJEBUFDPOTVNFS ෳͷTUSFBNͷσʔλΛ͍͍ͨঢ়گͰͲ͏͢Δʁ BETUSFBNͷྲྀྔ SQT TIBSE CJETUSFBNͷྲྀྔ SQT TIBSE -
ϦΞϧλΠϜσʔλॲཧΞϓϦέʔγϣϯͷಋೖྫ BEDBOEJEBUFDPOTVNFS BETUSFBN CJETUSFBN CJEDBOEJEBUFDPOTVNFS ෳͷTUSFBNͷσʔλΛ͍͍ͨঢ়گͰͲ͏͢Δʁ
BETUSFBNͷྲྀྔ SQT TIBSE CJETUSFBNͷྲྀྔ SQT TIBSE %ZOBMZTUͰɺɺ DPOTVNFSTUSFBNຖʹͦΕͧΕ࣮͢Δ DPOTVNFSͷதͰผͷTUSFBNʹ࠶QSPEVDF͢ΔॲཧΛೖΕΔ DBOEJEBUFTUSFBNͷDPOTVNFSͰతͷॲཧΛ࣮͢Δʂ DBOEJEBUFDPOTVNFS DBOEJEBUFTUSFBN -
ϦΞϧλΠϜσʔλॲཧΞϓϦέʔγϣϯͷಋೖྫ BEDBOEJEBUFDPOTVNFS BETUSFBN CJETUSFBN CJEDBOEJEBUFDPOTVNFS ෳͷTUSFBNͷσʔλΛ͍͍ͨঢ়گͰͲ͏͢Δʁ
BETUSFBNͷྲྀྔ SQT TIBSE CJETUSFBNͷྲྀྔ SQT TIBSE (FU3FDPSETͨ͠ͷΛू͠ɺ ϨίʔυΛݮΒͯ͠࠶QSPEVDFʂ DBOEJEBUFDPOTVNFS -
4VNNBSZPGUIJTTFTTJPO ΦϯϥΠϯࠂͷ͍· ࡢࠓͷࠂ৴ʹٻΊΒΕΔ͜ͱԿ͔ʁ %ZOBMZTU͕ఏڙ͢ΔՁͱԿ͔ʁ %ZOBMZTUͷγεςϜߏஙʹ͓͚Δίϯηϓτ γεςϜͷେنԽʹͬͯ໘ͨ͠՝ͨͪ ϩάͷྔ͚ͩͰͳ͘ϩάͷ༰͕ଟ༷Խ͢Δ͜ͱʹରԠ͠ʹ͍͘ σʔλͷར༻༻్ͷଟ༷Խͱॊೈੑͷ Ϩϙʔτूܭج൫㱠ΞυϗοΫੳج൫ "NB[PO,JOFTJTͷ࠾༻ͱͦͷಋೖͷաఔ
ͳͥ,JOFTJTͰղܾͰ͖Δͱߟ͔͑ͨʁ ,JOFTJTΛίΞͱ͢Δσʔλ׆༻ઓུͱ࣮ݱͨ͠γεςϜʹ͍ͭͯ