davidkhardwick
KafkaEx help - not able to get hello world going
I’m not able to get KafkaEx working. I’ve added the dependencies and use all the default configs, and I get the following when I run %> iex -S mix
[info] Application kafka_ex exited: KafkaEx.start(:normal, []) returned an error: an exception was raised:
** (Protocol.UndefinedError) protocol Enumerable not implemented for nil of type Atom. This protocol is implemented for the following type(s): Ecto.Adapters.SQL.Stream, Postgrex.Stream, DBConnection.Stream, DBConnection.PrepareStream, KafkaEx.Stream, HashSet, Range, Map, Function, List, Stream, Date.Range, HashDict, GenEvent.Stream, MapSet, File.Stream, IO.Stream
(elixir) lib/enum.ex:1: Enumerable.impl_for!/1
(elixir) lib/enum.ex:141: Enumerable.reduce/3
(elixir) lib/enum.ex:3023: Enum.map/2
(kafka_ex) lib/kafka_ex/server_0_p_10_and_later.ex:87: KafkaEx.Server0P10AndLater.kafka_server_init/1
(stdlib) gen_server.erl:374: :gen_server.init_it/2
(stdlib) gen_server.erl:342: :gen_server.init_it/6
(stdlib) proc_lib.erl:249: :proc_lib.init_p_do_apply/3
** (Mix) Could not start application kafka_ex: KafkaEx.start(:normal, []) returned an error: an exception was raised:
** (Protocol.UndefinedError) protocol Enumerable not implemented for nil of type Atom. This protocol is implemented for the following type(s): Ecto.Adapters.SQL.Stream, Postgrex.Stream, DBConnection.Stream, DBConnection.PrepareStream, KafkaEx.Stream, HashSet, Range, Map, Function, List, Stream, Date.Range, HashDict, GenEvent.Stream, MapSet, File.Stream, IO.Stream
(elixir) lib/enum.ex:1: Enumerable.impl_for!/1
(elixir) lib/enum.ex:141: Enumerable.reduce/3
(elixir) lib/enum.ex:3023: Enum.map/2
(kafka_ex) lib/kafka_ex/server_0_p_10_and_later.ex:87: KafkaEx.Server0P10AndLater.kafka_server_init/1
(stdlib) gen_server.erl:374: :gen_server.init_it/2
(stdlib) gen_server.erl:342: :gen_server.init_it/6
(stdlib) proc_lib.erl:249: :proc_lib.init_p_do_apply/3
Marked As Solved
davidkhardwick
Thank you, NobbZ!
Also Liked
NobbZ
Configuration of dependencies is not read. It might clash with configuration you want to put on your own. Therefore you need to create a config/config.exs with the configuration you want in your applications root.
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