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Zhenwei Feng commented on FLINK-20447:
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Hi Jark,
After I reconsidered the problem
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https://issues.apache.org/jira/browse/FLINK-20447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17242456#comment-17242456
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Jark Wu commented on FLINK-20447:
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Even if {{Code}} is the primary key, you still have t