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https://issues.apache.org/jira/browse/BAHIR-324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17727366#comment-17727366
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zhang junbo commented on BAHIR-324:
-----------------------------------

Yes, i also found this issue. and in jobmanager log ,id print the callstrack 
log as below: (just open ,not closed kudureader):

!image-2023-05-30-15-25-01-115.png!

 

> JobManager created a kuduReader that was not closed, resulting in an increase 
> in server handles 
> ------------------------------------------------------------------------------------------------
>
>                 Key: BAHIR-324
>                 URL: https://issues.apache.org/jira/browse/BAHIR-324
>             Project: Bahir
>          Issue Type: Bug
>          Components: Flink Streaming Connectors
>    Affects Versions: Flink-1.1.0
>            Reporter: ShiminHuang
>            Priority: Critical
>             Fix For: Flink-1.1.0
>
>         Attachments: image-2023-05-30-15-03-38-388.png, 
> image-2023-05-30-15-04-47-387.png, image-2023-05-30-15-05-33-472.png, 
> image-2023-05-30-15-06-16-063.png, image-2023-05-30-15-25-01-115.png
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> h1. Problem
> {quote}When JobManager starts, the ExecutionJobVertex constructor calls the 
> AbstractKuduInputFormat#createInputSplits method, Causes the KuduReader 
> object to create the KuduClient and KuduSession objects, but 
> ExecutionJobVertex does not call the Kudureader #close() method with the 
> display, causing the Kudu-related handle to remain open after the Flink task 
> is closed. As a result, the number of server handles increases with the 
> number of Flink tasks. As a result, the entire server becomes 
> unavailable{quote}
> h1. Code
> *ExecutionJobVertex#constructor*
> !image-2023-05-30-15-03-38-388.png!
> {*}AbstractKuduInputFormat#createInputSplits{*}{*}{*}
> *!image-2023-05-30-15-04-47-387.png!*
> {*}AbstractKuduInputFormat{*}{*}#startKuduReader{*}
> {*}!image-2023-05-30-15-06-16-063.png!{*}{*}{*}



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