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[FLINK-40671][network] Document why UnknownInputChannel graduation hardcodes needsRecovery=false #29191

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[FLINK-40671][network] Document why UnknownInputChannel graduation hardcodes needsRecovery=false #29191

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4 changes: 4 additions & 0 deletions ...main/java/org/apache/flink/runtime/io/network/partition/consumer/UnknownInputChannel.java
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Original file line number Diff line number Diff line change
Expand Up @@ -192,6 +192,8 @@ public RemoteInputChannel toRemoteInputChannel(
metrics.getNumBytesInRemoteCounter(),
metrics.getNumBuffersInRemoteCounter(),
channelStateWriter == null ? ChannelStateWriter.NO_OP : channelStateWriter,
// Unknown channels exist only in BATCH jobs, which have no channel

@davidradl davidradl Sep 15, 2026

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I was expecting a change to the docs from the PR title. Is there an external consideration that we could add to the docs around this? Or is this just for code hygene?

// state, so this channel is never in recovery.
false);
return channel;
}
Expand All @@ -210,6 +212,8 @@ public LocalInputChannel toLocalInputChannel(ResultPartitionID resultPartitionID
metrics.getNumBuffersInLocalCounter(),
channelStateWriter == null ? ChannelStateWriter.NO_OP : channelStateWriter,
networkBuffersPerChannel,
// Unknown channels exist only in BATCH jobs, which have no channel
// state, so this channel is never in recovery.
false);
}

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