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https://issues.apache.org/jira/browse/BEAM-7230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16841646#comment-16841646
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Brachi Packter commented on BEAM-7230:
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Hi.
Looked into the code, seems that like when using API
https://github.com/apache/beam/blob/adb6d0c9f790c9cda363dd5d14f03fb11362f4d1/sdks/java/io/jdbc/src/main/java/org/apache/beam/sdk/io/jdbc/JdbcIO.java#L298
you are setting data source via:
https://github.com/apache/beam/blob/adb6d0c9f790c9cda363dd5d14f03fb11362f4d1/sdks/java/io/jdbc/src/main/java/org/apache/beam/sdk/io/jdbc/JdbcIO.java#L361
and then it is not static, and created per function...
> Using JdbcIO creates huge amount of connections
> -----------------------------------------------
>
> Key: BEAM-7230
> URL: https://issues.apache.org/jira/browse/BEAM-7230
> Project: Beam
> Issue Type: Bug
> Components: runner-dataflow
> Affects Versions: 2.11.0
> Reporter: Brachi Packter
> Assignee: Ismaël Mejía
> Priority: Major
> Fix For: 2.13.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> I want to write form DataFlow to GCP cloud SQL, I'm using connection pool,
> and still I see huge amount of connections in GCP SQL (4k while I set
> connection pool to 300), and most of them in sleep.
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