zhijiang created FLINK-10662:
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Summary: Refactor the ChannelSelector interface for single
selected channel
Key: FLINK-10662
URL: https://issues.apache.org/jira/browse/FLINK-10662
Project: Flink
Issue Type: Improvement
Components: Network
Affects Versions: 1.6.1, 1.5.4
Reporter: zhijiang
Assignee: zhijiang
In the discussion of broadcast improvement, [~pnowojski] pointed out the issue
of improving the current channel selector.
In {{ChannelSelector#selectChannels}}, it would return an array for selected
channels. But considering specific implementations, only
{{BroadcastPartitioner}} would select all the channels, and other
implementations will select one channel. So we can simple this interface to
return single channel index for benefiting performance, and specialize the
{{BroadcastPartitioner}} in a more efficient way.
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