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From "vinoyang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-9511) Make StateDescriptor configurable with optional TTL
Date Sun, 01 Jul 2018 09:26:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-9511?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16529023#comment-16529023
] 

vinoyang commented on FLINK-9511:
---------------------------------

Hi [~azagrebin] the defined TtlConfig stored in flink-runtime module but StateDescriptor
class exists in flink-core, it seems I can not import it. Is there something wrong?

> Make StateDescriptor configurable with optional TTL
> ---------------------------------------------------
>
>                 Key: FLINK-9511
>                 URL: https://issues.apache.org/jira/browse/FLINK-9511
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Java API, State Backends, Checkpointing
>    Affects Versions: 1.6.0
>            Reporter: Andrey Zagrebin
>            Assignee: vinoyang
>            Priority: Major
>             Fix For: 1.6.0
>
>
> TTL can be enabled and configured in the constructor of abstract StateDescriptor and
become available in all subclasses:
> | {code:java}
> enum StateTtlUpdateType { Disabled, OnCreateAndWrite, OnReadAndWrite }
> enum StateTtlCleanupGuarantee { Relaxed, Exact }
> enum TtlStateVisibility { Relaxed, Exact }
> class TtlConfig {
>   StateTtlUpdateType updateType;
>   StateTtlCleanupGuarantee cleanupStrategy;
>   TtlStateVisibility stateVisibility;
>   TimeCharacteristic timeCharacteristic;
>   long ttl;
> }
> // previous constructor
> StateDescriptor(...) {
>   this.ttlConfig = ttlConfig.DISABLED;
> }
> // overloaded constructor with TtlConfig
> StateDescriptor(..., ttlConfig) {
>   ...
> }
> {code}
>  |
> Another option is to consider adding StateDescriptor builder
> Queryable state can be unsupported with TTL for now.



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