Leonard Xu created FLINK-21820:
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             Summary: JDBC connector shouldn't read all rows in per statement 
by default
                 Key: FLINK-21820
                 URL: https://issues.apache.org/jira/browse/FLINK-21820
             Project: Flink
          Issue Type: Improvement
          Components: Connectors / JDBC
            Reporter: Leonard Xu


The default value for JDBC option 'scan.fetch-size' is 0 which means read all 
rows in statement, this may lead to OOM or IO timeout.

We'd better set a reasonable value as default value.

 

 



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