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https://issues.apache.org/jira/browse/FLINK-14902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17467074#comment-17467074
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ranqiqiang commented on FLINK-14902:
------------------------------------

[~ana4]  I don‘t want to modify too much code.I jush create a 
JdbcConnectionPoolManager

to keep the  JdbcConnectionProvider and FieldNamedPreparedStatement. 

The coke like   [async-jdbc|https://github.com/ranqiqiang/flink.git].my brach 
is async-jdbc

Now, I met a problem when I run "mvn clean verify" it's lasts a long time until 
it failed.

It's show run "ElasticsearchWriterITCase"  got an error :

"Can't get Docker image: 
RemoteDockerImage(imageName=docker.elastic.co/elasticsearch/elasticsearch:7.15.2,
 imagePullPolicy=DefaultPullPolicy())"

I try to solve it, can you give me some advices ? 

 

> JDBCTableSource support AsyncLookupFunction
> -------------------------------------------
>
>                 Key: FLINK-14902
>                 URL: https://issues.apache.org/jira/browse/FLINK-14902
>             Project: Flink
>          Issue Type: Improvement
>          Components: Connectors / JDBC
>    Affects Versions: 1.9.0
>            Reporter: hailong wang
>            Assignee: ranqiqiang
>            Priority: Minor
>              Labels: auto-deprioritized-major, auto-unassigned, 
> pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> JDBCTableSource support AsyncLookupFunction



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