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https://issues.apache.org/jira/browse/FLINK-9076?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16424137#comment-16424137
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Nico Kruber commented on FLINK-9076:
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The max can already be configured via
{{taskmanager.network.memory.floating-buffers-per-gate}}. This is about
lowering the min value to 1 or 0 as before.
> Make credit-based floating buffers optional
> -------------------------------------------
>
> Key: FLINK-9076
> URL: https://issues.apache.org/jira/browse/FLINK-9076
> Project: Flink
> Issue Type: Sub-task
> Components: Network
> Affects Versions: 1.5.0, 1.6.0
> Reporter: Nico Kruber
> Assignee: Nico Kruber
> Priority: Blocker
> Fix For: 1.5.0
>
>
> Currently, floating buffers (per gate) are always required in case
> credit-based flow control is enabled. This, however, increases our minimum
> number of required network buffers.
> Instead, without changing too much, we could already work with a minimum of
> one or zero floating buffers and set the max to the configured value. This
> way, if there are not enough buffers, all {{LocalBufferPool}}s will at least
> share the available ones.
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