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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2019/07/08 10:50:00 UTC

[jira] [Updated] (FLINK-13013) Make sure that SingleInputGate can always request partitions

     [ https://issues.apache.org/jira/browse/FLINK-13013?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-13013:
-----------------------------------
    Labels: pull-request-available  (was: )

> Make sure that SingleInputGate can always request partitions
> ------------------------------------------------------------
>
>                 Key: FLINK-13013
>                 URL: https://issues.apache.org/jira/browse/FLINK-13013
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Runtime / Network
>            Reporter: Piotr Nowojski
>            Assignee: Piotr Nowojski
>            Priority: Major
>              Labels: pull-request-available
>
> Currently {{SingleInputGate}} requests partitions only on the first attempt to fetch the data. Before requesting partitions, no data availability notifications can get through. This doesn't work well with a new non blocking {{InputGate}} interface, since on newly created {{SingleInputGates,}} {{InputGate#isAvailable()}} might return not available, and it will be only able to switch to available, after first call to {{SingleInputGate#pollNext()}}. However this might never happen, since caller could be waiting indefinitely on {{SingleInputGate#isAvailable()}}.



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