Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Speaker Deck
PRO
Sign in
Sign up for free
mysql-freeze
ichirin2501
March 10, 2018
Programming
0
190
mysql-freeze
ichirin2501
March 10, 2018
Tweet
Share
More Decks by ichirin2501
See All by ichirin2501
MySQL運用とらぶるすとーり〜^2 / MySQL-Troubleshooting-Story
ichirin2501
7
11k
計算量と僕とWeb開発 / computational complexity and I and Web
ichirin2501
14
9.7k
Other Decks in Programming
See All in Programming
Makuakeの認証基盤とRe-Architectureチーム
bmf_san
0
570
ECS Service Connectでマイクロサービスを繋いでみた
xblood
0
540
What's new in Shopware 6.5
shyim
0
110
Glance App Widgetでウィジェットを作ろう / MoT TechTalk #15
mot_techtalk
0
120
Jetpack Compose 完全に理解した
mkeeda
1
460
あなたと 「|」 したい・・・
track3jyo
PRO
2
1.1k
Zynq MP SoC で楽しむエッジコンピューティング ~RTLプログラミングのススメ~
ryuz88
0
350
Amebaブログの会員画面システム刷新の道程
ryotasugawara
1
230
AWSとCPUのムフフな関係
cmdemura
0
470
まだ日本国内で利用できないAppActionsにトライしてみた / MoT TechTalk #15
mot_techtalk
0
110
TypeScript 4.9のas const satisfiesが便利
tonkotsuboy_com
9
2.3k
xarray-Datatree: Hierarchical Data Structures for Multi-Model Science
tomnicholas
0
210
Featured
See All Featured
Writing Fast Ruby
sferik
613
58k
Easily Structure & Communicate Ideas using Wireframe
afnizarnur
182
15k
Pencils Down: Stop Designing & Start Developing
hursman
114
10k
From Idea to $5000 a Month in 5 Months
shpigford
374
44k
Unsuck your backbone
ammeep
659
56k
Building an army of robots
kneath
301
40k
GraphQLの誤解/rethinking-graphql
sonatard
39
7.8k
Why You Should Never Use an ORM
jnunemaker
PRO
49
7.9k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
22
1.7k
Mobile First: as difficult as doing things right
swwweet
213
7.8k
Six Lessons from altMBA
skipperchong
15
2.3k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
10
1.3k
Transcript
MySQL freeze ͷר גࣜձࣾͯͳ id: ichirin2501 2017-08-19 Kyoto.ͳΜ͔ #3
ࣗݾհ • ݩߊ ( @ichirin2501 ) • ͯͳͷWebΦϖϨʔγϣϯΤϯδχΞ ڵຯ
ࠓճͷ͓
MySQLͷfreeze!!
࣌ʹ֬ೝग़དྷͨൣғΛྻڍ • ٸʹࢮ͵ • ࢮʹํfreeze, MySQLͷϓϩηεੜ͖ͯΔ • mysqladmin pingͳͲͷԠग़དྷΔ •
Ұ෦σʔλϕʔεͷΫΤϦ͕ฦͬͯ͜ͳ͍ • TCPͷଓཱ֬ग़དྷΔ, TCP keepaliveಈ͍ͯΔ • ΤϥʔϩάʹԿใग़ྗ͞Ε͍ͯͳ͍
͏͚Δ
͏͚ͳ͍
MySQLͷόʔδϣϯͱ͔ • MySQL-5.5.46 • mysql-server-5.5_5.5.46-0+deb7u1_amd64.deb • mysql-server-5.5_5.5.46-0+deb8u1_amd64.deb • OS: Debian
7.10(wheezy) or 8.1(jessie) • Kernel: wheezy=3.10.23, jessie=3.16.0
ڧҾʹ࠶ݱͤ͞Δ
sysbench !! (ҙ:benchmarkπʔϧ)
ߴෛՙΛ͔͚ଓ͚ͨΒ࠶ݱ͠ ͨʂʂ
sysbenchʹΑΔࡶͳݕূ݁Ռ EFCJBO EFCJBO P P Y Y
Y P P P P P x͕freeze
ϚΠφʔόʔδϣϯΛ্͛Δ 5.5.46 -> 5.5.52
ຊ൪ͰFreeze͠ͳ͘ͳͬͨ
ԿΘ͔ΒΜ͕ฏ͕๚Εͨ
࣌ա͗...
։ൃऀɿʮscript࣮ߦͯͨ͠Βfreezeͨ͠ʯ ࢲɿʮ͋ʔ͋ʔɺͳʹฉ͑͜·ͤΜʯ
MySQL-5.6.27͕Freeze
࠶ݕূ1 • աڈͷ؆қͳݕূͰfreeze͠ͳ͔ͬͨ • ಉݕূΛ࠶ߦ͕ͬͨ࠶ݱग़དྷͳ͍ • : sysbenchετϨεςετͰͳ͍
࠶ݕূ2 • ࣮ࡍʹϑϦʔζͨ͠batchεΫϦϓτͰࢼ͢ • 1ճ25࣌ؒͷbatchεΫϦϓτ • ݕূճ͕ॏͶΒΕͳ͍͕ࢼͦ͏ʂ
1ճͰݟࣄʹfreeze ͬͨͶʂʂʂʂʂ
ௐࠪ • Ҏલௐࠪͨ͠ͱ͖ʹεϧʔ͍߲͕ͯͨ͠ؾ ʹͳͬͨ • mysql-5.5.49ͷBugs FixedͷҰ෦ • InnoDB: Running
REPLACE operations on multiple connections resulted in a hang. (Bug #22530768, Bug #79185)
bug report • ʮInnodb freeze running REPLACE statementsʯhttps://bugs.mysql.com/ bug.php?id=79185 •
ಈ࡞ڥͱݱ͕ࠅࣅ͍ͯͨ͠ɻ ͰɺREPLACEΫΤϦࠓճͷfreezeࣄ݅ʹ ͓͍ͯҰൃߦ͞Ε͍ͯͳ͍
ؾʹͳͬͯίʔυΛݟʹߦ͘ • https://github.com/mysql/mysql-server/ search?q=22530768&type=Commits&utf8= %E2%9C%93 • |'o') TASपΓͷमਖ਼͡ΌΜ....REPLACEΫΤϦ ʹݶΒͳ͍ͷͰ....ෆԺ
ϚΠφʔόʔδϣϯΛ্͛Δ • 5.6.27ʹઌ΄ͲͷBugfixؚ·Ε͍ͯͳ ͍ɻͱΓ͋͑ͣ5.6.37·Ͱ্͛ͯscriptΛ࣮ߦ • ಉ༷ͷscriptΛԿ͔࣮ߦ͕ͨ͠freezeͳ͠ ࠓฏʂʂʂ
Α͘Θ͔ΒΜ͕ղܾʂʂ
ฏ͕Ұ൪
·ͱΊ • ϛυϧΣΞͷݕূेʹߦ͍·͠ΐ͏ • ͪΌΜͱετϨεςετΛ࣮ࢪ͠·͠ΐ͏ • ؾʹͳͬͨBugमਖ਼ͷίϛοτΛݟʹߦ͜͏