Comments (8)
LucaProvencal
commented on September 25, 2024
1
We're also seeing the same problem. Ruby 3.2.4 and Rails 7.1.3.2
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martinvium
commented on September 25, 2024
1
We run into this issue periodically after upgrading to rails (7.1.3.4), and running on pg (1.5.6), and ruby 3.3.2.
It happens during deployment of new pods, and sometimes will resolve it self after some time (Possibly only when the pod is restarted. I haven't been able to confirm).
We have had a couple of variants of this error happen (only in production). First one matches the one from the ticket description:
NoMethodError: undefined method `key?' for nil
get_oid_type(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/connection_adapters/postgresql_adapter.rb:829)
block (2 levels) in internal_exec_query(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/connection_adapters/postgresql/database_statements.rb:70)
each(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/connection_adapters/postgresql/database_statements.rb:67)
each_with_index(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/connection_adapters/postgresql/database_statements.rb:67)
block in internal_exec_query(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/connection_adapters/postgresql/database_statements.rb:67)
execute_and_clear(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/connection_adapters/postgresql_adapter.rb:877)
internal_exec_query(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/connection_adapters/postgresql/database_statements.rb:64)
select(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/connection_adapters/abstract/database_statements.rb:630)
select_all(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/connection_adapters/abstract/database_statements.rb:71)
block in select_all(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/connection_adapters/abstract/query_cache.rb:112)
block in cache_sql(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/connection_adapters/abstract/query_cache.rb:152)
synchronize(/usr/local/bundle/gems/activesupport-7.1.3.4/lib/active_support/concurrency/null_lock.rb:9)
cache_sql(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/connection_adapters/abstract/query_cache.rb:147)
select_all(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/connection_adapters/abstract/query_cache.rb:112)
_query_by_sql(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/querying.rb:62)
find_by_sql(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/querying.rb:51)
execute(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/statement_cache.rb:150)
cached_find_by(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/core.rb:431)
find_by(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/core.rb:300)
find_by!(/usr/local/bundle/gems/activerecord-7.1.3.4/lib/active_record/core.rb:304)
...
And this one we've seen more often:
ActiveRecord::StatementInvalid: wrong argument type nil (expected PG::TypeMap)
rescue in cached_find_by(/usr/local/bundle/gems/activerecord-7.1.3.3/lib/active_record/core.rb:433)
cached_find_by(/usr/local/bundle/gems/activerecord-7.1.3.3/lib/active_record/core.rb:430)
find_by(/usr/local/bundle/gems/activerecord-7.1.3.3/lib/active_record/core.rb:300)
find_by!(/usr/local/bundle/gems/activerecord-7.1.3.3/lib/active_record/core.rb:304)
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frodsan
commented on September 25, 2024
We have the same issue. We haven't been able to reproduce it outside production. I will make another attempt this week 😢.
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nelhefni
commented on September 25, 2024
We faced the same issue after our DB ran out of memory. Ruby 3.3.1 and Rails 7.1.3.3
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sailor
commented on September 25, 2024
Same issue here. I can't find a way to reproduce it neither
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zzak
commented on September 25, 2024
@nelhefni Are you able to share any graphs?
Does it happen after a deploy or does the issue occur under load?
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nelhefni
commented on September 25, 2024
We got the same stack trace as @martinvium (the one ending with get_oid_type call).
Here is the memory of our DB when the incident occured:
The issue is not related to a deployment.
We got our first instance of the error at 15:23 (13 mins after freeable memory reach a dangerous low), and the error continued for over an hour, despite the freeable memory increasing again. We had to restart the application to fix the issue.
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navidemad
commented on September 25, 2024
We got the same sometimes when the database is in a state of upgrading or out of memory or get DDOS.
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