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https://issues.apache.org/jira/browse/DRILL-2451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14804848#comment-14804848
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Khurram Faraaz commented on DRILL-2451:
---------------------------------------
I used the below snippet to verify, however I see an Exception.
{code}
Class.forName("org.apache.drill.jdbc.Driver").newInstance();
Connection conn = DriverManager.getConnection(URL_STRING,"","");
Statement stmt = conn.createStatement();
String query = "select * from FEWRWSPQQ_101";
ResultSet rs = stmt.executeQuery(query);
ResultSetMetaData rsmd = rs.getMetaData();
while (rs.next()) {
}
conn.commit();
if (rs != null)
rs.close();
stmt.close();
conn.close();
{code}
Here is the Exception I see when I compile and run the Java program
{code}
Can't call commit() in auto-commit mode.
org.apache.drill.jdbc.JdbcApiSqlException: Can't call commit() in auto-commit
mode.
at
org.apache.drill.jdbc.impl.DrillConnectionImpl.commit(DrillConnectionImpl.java:192)
at DataFromDrill.main(DataFromDrill.java:30)
{code}
> JDBC : Connection.commit throws an UnsupportedOperationException
> ----------------------------------------------------------------
>
> Key: DRILL-2451
> URL: https://issues.apache.org/jira/browse/DRILL-2451
> Project: Apache Drill
> Issue Type: Bug
> Components: Client - JDBC
> Reporter: Rahul Challapalli
> Assignee: Rahul Challapalli
> Fix For: 1.2.0
>
>
> git.commit.id.abbrev=e92db23
> Currently drill throws an UnsupportedOperationException when we call "commit"
> on the Connection object.
> I am not exactly sure what "commit" should do in the context of drill. But at
> the very least doing nothing is better than throwing the above exception
> since a few analytic tools might be using this method.
> Below is the documentation from the JDBC spec :
> {code}
> void commit() throws SQLException - Makes all changes made since the previous
> commit/rollback permanent and releases any database locks currently held by
> this Connection object. This method should be used only when auto-commit mode
> has been disabled.
> Throws:
> SQLException - if a database access error occurs, this method is called while
> participating in a distributed transaction, if this method is called on a
> closed connection or this Connection object is in auto-commit mode
> {code}
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