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https://issues.apache.org/jira/browse/SPARK-8386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14724756#comment-14724756
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Vishal Bagga commented on SPARK-8386:
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I just ran into the same issue today. This should addressed and looks like a
sever limitation.
> DataFrame and JDBC regression
> -----------------------------
>
> Key: SPARK-8386
> URL: https://issues.apache.org/jira/browse/SPARK-8386
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.4.0
> Environment: RHEL 7.1
> Reporter: Peter Haumer
> Priority: Critical
>
> I have an ETL app that appends to a JDBC table new results found at each run.
> In 1.3.1 I did this:
> testResultsDF.insertIntoJDBC(CONNECTION_URL, TABLE_NAME, false);
> When I do this now in 1.4 it complains that the "object" 'TABLE_NAME' already
> exists. I get this even if I switch the overwrite to true. I also tried this
> now:
> testResultsDF.write().mode(SaveMode.Append).jdbc(CONNECTION_URL, TABLE_NAME,
> connectionProperties);
> getting the same error. It works running the first time creating the new
> table and adding data successfully. But, running it a second time it (the
> jdbc driver) will tell me that the table already exists. Even
> SaveMode.Overwrite will give me the same error.
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