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https://issues.apache.org/jira/browse/FLINK-9794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-9794:
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Labels: auto-deprioritized-major auto-unassigned pull-request-available
(was: auto-unassigned pull-request-available stale-major)
Priority: Minor (was: Major)
This issue was labeled "stale-major" 7 ago and has not received any updates so
it is being deprioritized. If this ticket is actually Major, please raise the
priority and ask a committer to assign you the issue or revive the public
discussion.
> JDBCOutputFormat does not consider idle connection and multithreads
> synchronization
> -----------------------------------------------------------------------------------
>
> Key: FLINK-9794
> URL: https://issues.apache.org/jira/browse/FLINK-9794
> Project: Flink
> Issue Type: Bug
> Components: Connectors / JDBC
> Affects Versions: 1.4.0, 1.5.0
> Reporter: wangsan
> Priority: Minor
> Labels: auto-deprioritized-major, auto-unassigned,
> pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Current implementation of JDBCOutputFormat has two potential problems:
> 1. The Connection was established when JDBCOutputFormat is opened, and will
> be used all the time. But if this connection lies idle for a long time, the
> database will force close the connection, thus errors may occur.
> 2. The flush() method is called when batchCount exceeds the threshold, but it
> is also called while snapshotting state. So two threads may modify upload and
> batchCount, but without synchronization.
> We need fix these two problems to make JDBCOutputFormat more reliable.
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