我最近从4个轨道迁移到最新的5.1轨道（从瘦到puma服务器）。我有一个不可重复的错误，我无法追踪它的来源。下面是一个示例应用程序回溯：
app/views/reports/_transaction_dialog.html.erb:88:in `_app_views_report=
s__transaction_dialog_html_erb___259516699_72100400'
app/views/reports/show.html.erb:40:in `block in _app_views_reports_show=
_html_erb___439575899_73388840'
app/views/reports/show.html.erb:38:in `_app_views_reports_show_html_erb=
___439575899_73388840'
app/controllers/application_controller.rb:52:in `block in select_shard'=
app/controllers/application_controller.rb:48:in `select_shard'
我知道它并没有多说......它只是一个部分渲染。它发生在代码的不同位置，但通常在app使用flipper来检查功能可用性的地方。这里_transaction_dialog.html.erb：88有：
<% if $flipper[:schooling].enabled? current_user %>
我会尝试向flipper报告，但也许有人有其他想法？我使用章鱼进行数据库分片。下面的Gemfile.lock：
GIT
remote: https://github.com/zquestz/omniauth-google-oauth2
revision: 605f483311a1885d87fa636791faba109ff37221
branch: master
specs:
omniauth-google-oauth2 (0.5.2)
jwt (~> 1.5)
omniauth (>= 1.1.1)
omniauth-oauth2 (>= 1.3.1)
GEM
remote: https://rubygems.org/
remote: https://rails-assets.org/
specs:
actioncable (5.1.4)
actionpack (= 5.1.4)
nio4r (~> 2.0)
websocket-driver (~> 0.6.1)
actionmailer (5.1.4)
actionpack (= 5.1.4)
actionview (= 5.1.4)
activejob (= 5.1.4)
mail (~> 2.5, >= 2.5.4)
rails-dom-testing (~> 2.0)
actionpack (5.1.4)
actionview (= 5.1.4)
activesupport (= 5.1.4)
rack (~> 2.0)
rack-test (>= 0.6.3)
rails-dom-testing (~> 2.0)
rails-html-sanitizer (~> 1.0, >= 1.0.2)
actionview (5.1.4)
activesupport (= 5.1.4)
builder (~> 3.1)
erubi (~> 1.4)
rails-dom-testing (~> 2.0)
rails-html-sanitizer (~> 1.0, >= 1.0.3)
activejob (5.1.4)
activesupport (= 5.1.4)
globalid (>= 0.3.6)
activemodel (5.1.4)
activesupport (= 5.1.4)
activerecord (5.1.4)
activemodel (= 5.1.4)
activesupport (= 5.1.4)
arel (~> 8.0)
activerecord-sqlserver-adapter (5.1.2)
activerecord (~> 5.1.0)
tiny_tds
activesupport (5.1.4)
concurrent-ruby (~> 1.0, >= 1.0.2)
i18n (~> 0.7)
minitest (~> 5.1)
tzinfo (~> 1.1)
addressable (2.5.2)
public_suffix (>= 2.0.2, < 4.0)
ar-octopus (0.9.1)
activerecord (>= 4.0.0)
activesupport (>= 4.0.0)
arel (8.0.0)
autoprefixer-rails (7.1.6)
execjs
axlsx (1.3.6)
htmlentities (~> 4.3.1)
nokogiri (>= 1.4.1)
rubyzip (>= 0.9.5)
bcrypt (3.1.11-x64-mingw32)
bcrypt (3.1.11-x86-mingw32)
bootstrap-sass (3.3.7)
autoprefixer-rails (>= 5.2.1)
sass (>= 3.3.4)
bootstrap_form (2.7.0)
builder (3.2.3)
byebug (9.1.0)
cmxl (0.2.0)
rchardet19
cocoon (1.2.11)
coffee-rails (4.2.2)
coffee-script (>= 2.2.0)
railties (>= 4.0.0)
coffee-script (2.4.1)
coffee-script-source
execjs
coffee-script-source (1.12.2)
concurrent-ruby (1.0.5)
crass (1.0.3)
declarative (0.0.10)
declarative-option (0.1.0)
devise (4.3.0)
bcrypt (~> 3.0)
orm_adapter (~> 0.1)
railties (>= 4.1.0, < 5.2)
responders
warden (~> 1.2.3)
devise_ldap_authenticatable (0.8.5)
devise (>= 3.4.1)
net-ldap (>= 0.6.0, <= 0.11)
docx (0.2.07)
nokogiri (~> 1.5)
rubyzip (~> 1.1.6)
erubi (1.7.0)
erubis (2.7.0)
exception_notification (4.2.2)
actionmailer (>= 4.0, < 6)
activesupport (>= 4.0, < 6)
execjs (2.7.0)
faraday (0.12.2)
multipart-post (>= 1.2, < 3)
ffi (1.9.18-x64-mingw32)
ffi (1.9.18-x86-mingw32)
flipper (0.11.0)
flipper-ui (0.11.0)
erubis (~> 2.7.0)
flipper (~> 0.11.0)
rack (>= 1.4, < 3)
rack-protection (>= 1.5.3, < 2.1.0)
globalid (0.4.1)
activesupport (>= 4.2.0)
gmail (0.6.0)
gmail_xoauth (>= 0.3.0)
mail (>= 2.2.1)
gmail_xoauth (0.4.2)
oauth (>= 0.3.6)
google-api-client (0.17.3)
addressable (~> 2.5, >= 2.5.1)
googleauth (>= 0.5, < 0.7.0)
httpclient (>= 2.8.1, < 3.0)
mime-types (~> 3.0)
representable (~> 3.0)
retriable (>= 2.0, < 4.0)
googleauth (0.6.2)
faraday (~> 0.12)
jwt (>= 1.4, < 3.0)
logging (~> 2.0)
memoist (~> 0.12)
multi_json (~> 1.11)
os (~> 0.9)
signet (~> 0.7)
googlecharts (1.6.12)
hashie (3.5.6)
htmlentities (4.3.4)
httpclient (2.8.3)
i18n (0.9.1)
concurrent-ruby (~> 1.0)
jwt (1.5.6)
little-plugger (1.1.4)
logging (2.2.2)
little-plugger (~> 1.1)
multi_json (~> 1.10)
loofah (2.1.1)
crass (~> 1.0.2)
nokogiri (>= 1.5.9)
mail (2.7.0)
mini_mime (>= 0.1.1)
memoist (0.16.0)
method_source (0.9.0)
mime-types (3.1)
mime-types-data (~> 3.2015)
mime-types-data (3.2016.0521)
mini_mime (1.0.0)
mini_portile2 (2.3.0)
minitest (5.10.3)
money (6.10.0)
i18n (>= 0.6.4, < 1.0)
multi_json (1.12.2)
multi_logger (0.1.0)
railties
multi_xml (0.6.0)
multipart-post (2.0.0)
net-ldap (0.11)
nio4r (2.1.0)
nokogiri (1.8.1-x64-mingw32)
mini_portile2 (~> 2.3.0)
nokogiri (1.8.1-x86-mingw32)
mini_portile2 (~> 2.3.0)
oauth (0.5.3)
oauth2 (1.4.0)
faraday (>= 0.8, < 0.13)
jwt (~> 1.0)
multi_json (~> 1.3)
multi_xml (~> 0.5)
rack (>= 1.2, < 3)
omniauth (1.7.1)
hashie (>= 3.4.6, < 3.6.0)
rack (>= 1.6.2, < 3)
omniauth-oauth2 (1.4.0)
oauth2 (~> 1.0)
omniauth (~> 1.2)
orm_adapter (0.5.0)
os (0.9.6)
public_suffix (3.0.1)
puma (3.11.0)
rack (2.0.3)
rack-protection (2.0.0)
rack
rack-test (0.8.2)
rack (>= 1.0, < 3)
rails (5.1.4)
actioncable (= 5.1.4)
actionmailer (= 5.1.4)
actionpack (= 5.1.4)
actionview (= 5.1.4)
activejob (= 5.1.4)
activemodel (= 5.1.4)
activerecord (= 5.1.4)
activesupport (= 5.1.4)
bundler (>= 1.3.0)
railties (= 5.1.4)
sprockets-rails (>= 2.0.0)
rails-assets-fullcalendar (3.7.0)
rails-assets-jquery (>= 2, < 4)
rails-assets-moment (>= 2.9.0, < 3)
rails-assets-fullcalendar-scheduler (1.9.0)
rails-assets-fullcalendar (~> 3.7.0)
rails-assets-jquery (>= 2, < 4)
rails-assets-moment (>= 2.9.0, < 3)
rails-assets-jquery (3.2.1)
rails-assets-jquery-ui (1.12.1)
rails-assets-jquery (>= 1.6)
rails-assets-jquery-ujs (1.2.2)
rails-assets-jquery (> 1.8)
rails-assets-jqueryui-timepicker-addon (1.6.3)
rails-assets-js-cookie (2.2.0)
rails-assets-lightbox (2.10.0)
rails-assets-jquery (> 2)
rails-assets-moment (2.19.3)
rails-dom-testing (2.0.3)
activesupport (>= 4.2.0)
nokogiri (>= 1.6)
rails-html-sanitizer (1.0.3)
loofah (~> 2.0)
railties (5.1.4)
actionpack (= 5.1.4)
activesupport (= 5.1.4)
method_source
rake (>= 0.8.7)
thor (>= 0.18.1, < 2.0)
rake (12.3.0)
rb-fsevent (0.10.2)
rb-inotify (0.9.10)
ffi (>= 0.5.0, < 2)
rchardet19 (1.3.7)
representable (3.0.4)
declarative (< 0.1.0)
declarative-option (< 0.2.0)
uber (< 0.2.0)
responders (2.4.0)
actionpack (>= 4.2.0, < 5.3)
railties (>= 4.2.0, < 5.3)
retriable (3.1.1)
ruby-oci8 (2.2.5-x64-mingw32)
ruby-oci8 (2.2.5-x86-mingw32)
rubyzip (1.1.7)
sass (3.5.3)
sass-listen (~> 4.0.0)
sass-listen (4.0.0)
rb-fsevent (~> 0.9, >= 0.9.4)
rb-inotify (~> 0.9, >= 0.9.7)
sass-rails (5.0.7)
railties (>= 4.0.0, < 6)
sass (~> 3.1)
sprockets (>= 2.8, < 4.0)
sprockets-rails (>= 2.0, < 4.0)
tilt (>= 1.1, < 3)
signet (0.8.1)
addressable (~> 2.3)
faraday (~> 0.9)
jwt (>= 1.5, < 3.0)
multi_json (~> 1.10)
sprockets (3.7.1)
concurrent-ruby (~> 1.0)
rack (> 1, < 3)
sprockets-rails (3.2.1)
actionpack (>= 4.0)
activesupport (>= 4.0)
sprockets (>= 3.0.0)
sqlite3 (1.3.13-x64-mingw32)
sqlite3 (1.3.13-x86-mingw32)
thor (0.20.0)
thread_safe (0.3.6)
tilt (2.0.8)
tiny_tds (2.1.0-x64-mingw32)
tiny_tds (2.1.0-x86-mingw32)
tzinfo (1.2.4)
thread_safe (~> 0.1)
tzinfo-data (1.2017.3)
tzinfo (>= 1.0.0)
uber (0.1.0)
uglifier (3.2.0)
execjs (>= 0.3.0, < 3)
warden (1.2.7)
rack (>= 1.0)
websocket-driver (0.6.5)
websocket-extensions (>= 0.1.0)
websocket-extensions (0.1.3)
zip (2.0.2)
PLATFORMS
x64-mingw32
x86-mingw32
DEPENDENCIES
activerecord-sqlserver-adapter
ar-octopus
axlsx
bootstrap-sass
bootstrap_form
byebug
cmxl
cocoon
coffee-rails
devise
devise_ldap_authenticatable
docx
exception_notification
flipper
flipper-ui
gmail
google-api-client
googleauth
googlecharts
money
multi_logger
omniauth-google-oauth2!
puma
rails
rails-assets-fullcalendar!
rails-assets-fullcalendar-scheduler!
rails-assets-jquery!
rails-assets-jquery-ui!
rails-assets-jquery-ujs!
rails-assets-jqueryui-timepicker-addon!
rails-assets-js-cookie!
rails-assets-lightbox!
ruby-oci8
sass-rails
sqlite3
tiny_tds
tzinfo-data
uglifier
zip
BUNDLED WITH
1.16.0
这是我在nginx日志中看到的：
10.86.12.240 - - [27/Dec/2017:13:44:12 +0000] "GET / HTTP/2.0" 200 5589 "-" "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36"
10.86.12.240 - - [27/Dec/2017:13:44:18 +0000] "GET /reports/3576 HTTP/2.0" 499 0 "https://quick.roche.com/" "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36"
10.86.12.240 - - [27/Dec/2017:13:44:19 +0000] "GET /reports/3576 HTTP/2.0" 200 7802 "https://quick.roche.com/" "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36"
成功（http status = 200）请求初始页面，然后是499和200
499是什么让我在rails stack中出错
这是我在rails日志中提供的最后两个请求：
I, [2017-12-27T13:44:18.744420 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Started GET "/reports/3576" for 127.0.0.1 at 2017-12-27 13:44:18 +0000
I, [2017-12-27T13:44:18.744420 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Processing by ReportsController#show as HTML
I, [2017-12-27T13:44:18.744420 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Parameters: {"id"=>"3576"}
D, [2017-12-27T13:44:18.744420 #1760] DEBUG -- : [1226f679-086e-4699-a6de-cab43006d58d] [1m[32m[Shard: ir][0m [1m[36mUser Load (0.0ms)[0m [1m[35mEXEC sp_executesql N'SELECT [users].* FROM [users] WHERE [users].[login] = @0 ORDER BY name ASC OFFSET 0 ROWS FETCH NEXT @1 ROWS ONLY', N'@0 varchar(8), @1 int', @0 = 'sh', @1 = 1[0m [["login", nil], ["LIMIT", nil]]
D, [2017-12-27T13:44:18.744420 #1760] DEBUG -- : [1226f679-086e-4699-a6de-cab43006d58d] [1m[32m[Shard: ir][0m [1m[36mExecute Procedure (0.0ms)[0m [1m[35mEXEC Delegators @ToolName = N'WebT&E', @user = N'sh', @permission = N'% REPORT'[0m
I, [2017-12-27T13:44:18.869223 #1760] INFO -- : [9817073b-8d80-4516-ba8d-040e223d1502] Started GET "/reports/3576" for 127.0.0.1 at 2017-12-27 13:44:18 +0000
I, [2017-12-27T13:44:18.869223 #1760] INFO -- : [9817073b-8d80-4516-ba8d-040e223d1502] Processing by ReportsController#show as HTML
I, [2017-12-27T13:44:18.869223 #1760] INFO -- : [9817073b-8d80-4516-ba8d-040e223d1502] Parameters: {"id"=>"3576"}
D, [2017-12-27T13:44:18.869223 #1760] DEBUG -- : [9817073b-8d80-4516-ba8d-040e223d1502] [1m[32m[Shard: ir][0m [1m[36mUser Load (0.0ms)[0m [1m[35mEXEC sp_executesql N'SELECT [users].* FROM [users] WHERE [users].[login] = @0 ORDER BY name ASC OFFSET 0 ROWS FETCH NEXT @1 ROWS ONLY', N'@0 varchar(8), @1 int', @0 = 'sh', @1 = 1[0m [["login", nil], ["LIMIT", nil]]
D, [2017-12-27T13:44:18.869223 #1760] DEBUG -- : [9817073b-8d80-4516-ba8d-040e223d1502] [1m[32m[Shard: ir][0m [1m[36mExecute Procedure (0.0ms)[0m [1m[35mEXEC Delegators @ToolName = N'WebT&E', @user = N'sh', @permission = N'% REPORT'[0m
D, [2017-12-27T13:44:19.212432 #1760] DEBUG -- : [9817073b-8d80-4516-ba8d-040e223d1502] [1m[32m[Shard: ir][0m [1m[36mExecute Procedure (343.2ms)[0m [1m[35mEXEC GetParameters @ToolName = N'WebT&E', @user = N'sh', @user_direct = N'sh', @report_id = N'3576'[0m
D, [2017-12-27T13:44:19.212432 #1760] DEBUG -- : [1226f679-086e-4699-a6de-cab43006d58d] [1m[32m[Shard: ir][0m [1m[36mExecute Procedure (468.0ms)[0m [1m[35mEXEC GetParameters @ToolName = N'WebT&E', @user = N'sh', @user_direct = N'sh', @report_id = N'3576'[0m
D, [2017-12-27T13:44:19.212432 #1760] DEBUG -- : [9817073b-8d80-4516-ba8d-040e223d1502] [1m[32m[Shard: ir][0m [1m[36mUser Load (0.0ms)[0m [1m[35mEXEC sp_executesql N'SELECT [users].* FROM [users] WHERE [users].[login] = @0 ORDER BY name ASC OFFSET 0 ROWS FETCH NEXT @1 ROWS ONLY', N'@0 varchar(8), @1 int', @0 = 'mp', @1 = 1[0m [["login", nil], ["LIMIT", nil]]
I, [2017-12-27T13:44:19.212432 #1760] INFO -- : [9817073b-8d80-4516-ba8d-040e223d1502] Rendering reports/show.html.erb within layouts/application
D, [2017-12-27T13:44:19.212432 #1760] DEBUG -- : [1226f679-086e-4699-a6de-cab43006d58d] [1m[32m[Shard: ir][0m [1m[36mUser Load (0.0ms)[0m [1m[35mEXEC sp_executesql N'SELECT [users].* FROM [users] WHERE [users].[login] = @0 ORDER BY name ASC OFFSET 0 ROWS FETCH NEXT @1 ROWS ONLY', N'@0 varchar(8), @1 int', @0 = 'mp', @1 = 1[0m [["login", nil], ["LIMIT", nil]]
I, [2017-12-27T13:44:19.212432 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendering reports/show.html.erb within layouts/application
D, [2017-12-27T13:44:19.228033 #1760] DEBUG -- : [9817073b-8d80-4516-ba8d-040e223d1502] [1m[32m[Shard: ir][0m [1m[36mComment Load (15.6ms)[0m [1m[34mSELECT [comments].* FROM [comments] WHERE (entity='Report' AND entity_id=N'3576')[0m
D, [2017-12-27T13:44:19.228033 #1760] DEBUG -- : [1226f679-086e-4699-a6de-cab43006d58d] [1m[32m[Shard: ir][0m [1m[36mComment Load (15.6ms)[0m [1m[34mSELECT [comments].* FROM [comments] WHERE (entity='Report' AND entity_id=N'3576')[0m
I, [2017-12-27T13:44:19.243633 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendered reports/_transactions.html.erb (15.6ms)
I, [2017-12-27T13:44:19.243633 #1760] INFO -- : [9817073b-8d80-4516-ba8d-040e223d1502] Rendered reports/_transactions.html.erb (15.6ms)
I, [2017-12-27T13:44:19.243633 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendered reports/_summary.html.erb (31.2ms)
I, [2017-12-27T13:44:19.243633 #1760] INFO -- : [9817073b-8d80-4516-ba8d-040e223d1502] Rendered reports/_summary.html.erb (31.2ms)
I, [2017-12-27T13:44:19.243633 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendered reports/show.html.erb within layouts/application (31.2ms)
I, [2017-12-27T13:44:19.243633 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Completed 500 Internal Server Error in 499ms (ActiveRecord: 483.6ms)
I, [2017-12-27T13:44:19.259233 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendering F:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/exception_notification-4.2.2/lib/exception_notifier/views/exception_notifier/exception_notification.text.erb
I, [2017-12-27T13:44:19.274834 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendered F:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/exception_notification-4.2.2/lib/exception_notifier/views/exception_notifier/_request.text.erb (0.0ms)
D, [2017-12-27T13:44:19.274834 #1760] DEBUG -- : [9817073b-8d80-4516-ba8d-040e223d1502] [1m[32m[Shard: ir][0m [1m[36mExecute Procedure (31.2ms)[0m [1m[35mEXEC account_groups @user = N'mp'[0m
I, [2017-12-27T13:44:19.290434 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendered F:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/exception_notification-4.2.2/lib/exception_notifier/views/exception_notifier/_title.text.erb (0.0ms)
I, [2017-12-27T13:44:19.290434 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendered F:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/exception_notification-4.2.2/lib/exception_notifier/views/exception_notifier/_session.text.erb (0.0ms)
I, [2017-12-27T13:44:19.290434 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendered F:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/exception_notification-4.2.2/lib/exception_notifier/views/exception_notifier/_title.text.erb (0.0ms)
I, [2017-12-27T13:44:19.306035 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendered F:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/exception_notification-4.2.2/lib/exception_notifier/views/exception_notifier/_environment.text.erb (0.0ms)
D, [2017-12-27T13:44:19.306035 #1760] DEBUG -- : [9817073b-8d80-4516-ba8d-040e223d1502] [1m[32m[Shard: ir][0m [1m[36mExecute Procedure (15.6ms)[0m [1m[35mEXEC accounts_for @user = N'mp', @group = N'Travel'[0m
I, [2017-12-27T13:44:19.306035 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendered F:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/exception_notification-4.2.2/lib/exception_notifier/views/exception_notifier/_title.text.erb (0.0ms)
I, [2017-12-27T13:44:19.306035 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendered F:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/exception_notification-4.2.2/lib/exception_notifier/views/exception_notifier/_backtrace.text.erb (0.0ms)
I, [2017-12-27T13:44:19.306035 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendered F:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/exception_notification-4.2.2/lib/exception_notifier/views/exception_notifier/_title.text.erb (0.0ms)
I, [2017-12-27T13:44:19.306035 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Rendered F:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/exception_notification-4.2.2/lib/exception_notifier/views/exception_notifier/exception_notification.text.erb (46.8ms)
D, [2017-12-27T13:44:19.306035 #1760] DEBUG -- : [9817073b-8d80-4516-ba8d-040e223d1502] [1m[32m[Shard: ir][0m [1m[36mExecute Procedure (0.0ms)[0m [1m[35mEXEC accounts_for @user = N'mp', @group = N'Congress'[0m
D, [2017-12-27T13:44:19.306035 #1760] DEBUG -- : [1226f679-086e-4699-a6de-cab43006d58d] #exception_notification: processed outbound mail in 62.4ms
D, [2017-12-27T13:44:19.321635 #1760] DEBUG -- : [9817073b-8d80-4516-ba8d-040e223d1502] [1m[32m[Shard: ir][0m [1m[36mExecute Procedure (15.6ms)[0m [1m[35mEXEC accounts_for @user = N'mp', @group = N'Other'[0m
D, [2017-12-27T13:44:19.399637 #1760] DEBUG -- : [9817073b-8d80-4516-ba8d-040e223d1502] [1m[32m[Shard: ir][0m [1m[36mExecute Procedure (78.0ms)[0m [1m[35mEXEC UnreportedRequests @ToolName = N'WebT&E', @user = N'mp', @ReportId = 3576[0m
I, [2017-12-27T13:44:19.399637 #1760] INFO -- : [9817073b-8d80-4516-ba8d-040e223d1502] Rendered reports/_transaction_dialog.html.erb (156.0ms)
I, [2017-12-27T13:44:19.399637 #1760] INFO -- : [9817073b-8d80-4516-ba8d-040e223d1502] Rendered reports/_split_dialog.html.erb (0.0ms)
I, [2017-12-27T13:44:19.399637 #1760] INFO -- : [9817073b-8d80-4516-ba8d-040e223d1502] Rendered reports/_travel_dialog.html.erb (0.0ms)
I, [2017-12-27T13:44:19.399637 #1760] INFO -- : [9817073b-8d80-4516-ba8d-040e223d1502] Rendered reports/_additionals_dialog.html.erb (0.0ms)
I, [2017-12-27T13:44:19.399637 #1760] INFO -- : [9817073b-8d80-4516-ba8d-040e223d1502] Rendered reports/show.html.erb within layouts/application (187.2ms)
I, [2017-12-27T13:44:19.399637 #1760] INFO -- : [9817073b-8d80-4516-ba8d-040e223d1502] Completed 200 OK in 530ms (Views: 36.4ms | ActiveRecord: 499.2ms)
I, [2017-12-27T13:44:19.477639 #1760] INFO -- : [1226f679-086e-4699-a6de-cab43006d58d] Sent mail to krzysztof.chodak@... (171.6ms)
在我看来，有两个相同的请求，其中一个请求与嵌套事务＆＃39;来自ActiveRecord的错误（是AR？错误的类实际上是ActionView :: Template :: Error）...
我没有看到任何＆＃34;嵌套交易＆＃34;在rails source ...
第一个问题是为什么在同一个客户端的rails中有两个请求，而第二个几乎相同？
第二个问题是为什么这样的并行请求失败了？
我搜索了所有我的宝石来源＆＃34;嵌套交易＆＃34;我没有看到它 - 我无法找到引发此错误的代码:(
答案 0 :(得分：0)
我终于能够在开发时重现这个错误：我双击链接导致两个几乎同时发出的请求。实际的＆＃34;嵌套事务＆＃34;错误来自于鳍状肢的PStore。
解决方案：
通过使用带有一系列功能的$ flipper.preload（[]）来减少Flipper功能调用的数量＆＃39;在PStore上添加5分钟ActiveSupportCacheStore缓存
禁用连续链接的使用
要检查它是否对生产有效，但开发测试看起来很有希望。
update1：它只是减少了错误的数量 - PStore上的线程安全选项需要通过修补鳍状肢来启用