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https://issues.apache.org/jira/browse/FLINK-7378?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zhijiang updated FLINK-7378:
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Description:
Currently the number of network buffers in {{LocalBufferPool}} for
{{SingleInputGate}} is limited by {{a * <number of channels> + b}}, where a is
the number of exclusive buffers for each channel and b is the number of
floating buffers shared by all channels.
Considering the credit-based flow control feature, we want to create a fix size
buffer pool used to manage the floating buffers for {{SingleInputGate}}. And
the exclusive buffers are assigned to {{InputChannel}}s directly.
was:
Currently the number of network buffers in {{LocalBufferPool}} for
{{SingleInputGate}} is limited by {{a * <number of channels> + b}}, where a is
the number of exclusive buffers for each channel and b is the number of
floating buffers shared by all channels.
Considering the credit-based flow control feature, we want to implement a new
fixed size buffer pool type used to manage the floating buffers for
{{SingleInputGate}}.
Compared with {{LocalBufferPool}}, this is a non-rebalancing buffer pool which
will not participate in redistributing the left available buffers in
{{NetworkBufferPool}}.
> Create a fix size (non rebalancing) buffer pool type for the floating buffers
> -----------------------------------------------------------------------------
>
> Key: FLINK-7378
> URL: https://issues.apache.org/jira/browse/FLINK-7378
> Project: Flink
> Issue Type: Sub-task
> Components: Core
> Reporter: zhijiang
> Assignee: zhijiang
> Fix For: 1.4.0
>
>
> Currently the number of network buffers in {{LocalBufferPool}} for
> {{SingleInputGate}} is limited by {{a * <number of channels> + b}}, where a
> is the number of exclusive buffers for each channel and b is the number of
> floating buffers shared by all channels.
> Considering the credit-based flow control feature, we want to create a fix
> size buffer pool used to manage the floating buffers for {{SingleInputGate}}.
> And the exclusive buffers are assigned to {{InputChannel}}s directly.
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