[jira] [Updated] (FLINK-7378) Create a fix size (non rebalancing) buffer pool type for the floating buffers

["zhijiang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-7378?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

zhijiang updated FLINK-7378:
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    Summary: Create a fix size (non rebalancing) buffer pool type for the floating buffers  (was: Implement the FixedBufferPool for floating buffers of SingleInputGate)

> 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 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}}.



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