http://deprecated-apache-flink-mailing-list-archive.368.s1.nabble.com/jira-Closed-FLINK-921-Channel-initialization-does-not-respect-JobGraph-channel-types-tp63.html
> Channel initialization does not respect JobGraph channel types
> --------------------------------------------------------------
>
> Key: FLINK-921
> URL:
https://issues.apache.org/jira/browse/FLINK-921> Project: Flink
> Issue Type: Bug
> Affects Versions: pre-apache-0.5
> Reporter: Ufuk Celebi
>
> Initialization of input and output channels has been moved with 2db78a8dc1a4664f3e384005d7e07bea594b835b from `RuntimeEnvironment` to `initializeChannels(GateDeploymentDescriptor)` in InputGate and OutputGate respectively.
> When creating a channel, `getChannelType()` of the abstract `Gate` class is called instead of the respective descriptor method, which should actually be called:
> ```
> this.channels[i] = new OutputChannel(this, i, id, connectedId, getChannelType());
> ```
> `getChannelType()` of `Gate` returns `ChannelType.NETWORK`, hence currently all channels are of type `ChannelType.NETWORK`.
> This introduces runtime lookups of channel receivers in `ChannelManager` as `ChannelManager.register(Task)` does not add them at task registration.
>