[jira] [Closed] (FLINK-31397) Introduce write-once hash lookup store

["Jingsong Lee (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-31397?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jingsong Lee closed FLINK-31397.
--------------------------------
    Resolution: Fixed

master: 0f5744a92bc52f52bc0f6644dc063dcb60fe326c

> Introduce write-once hash lookup store
> --------------------------------------
>
>                 Key: FLINK-31397
>                 URL: https://issues.apache.org/jira/browse/FLINK-31397
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table Store
>            Reporter: Jingsong Lee
>            Assignee: Jingsong Lee
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: table-store-0.4.0
>
>
> Introduce interface for lookup changelog producer:
> {code:java}
> /**
>  * A key-value store for lookup, key-value store should be single binary file written once and ready
>  * to be used. This factory provide two interfaces:
>  *
>  * <ul>
>  *   <li>Writer: written once to prepare binary file.
>  *   <li>Reader: lookup value by key bytes.
>  * </ul>
>  */
> public interface LookupStoreFactory {
>     LookupStoreWriter createWriter(File file) throws IOException;
>     LookupStoreReader createReader(File file) throws IOException;
> }
>  {code}
> We can convert remote columnar data to local lookup store, and ready to be used to lookup.



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