PrestoDB translator - Convert to float not pushed correctly

org.teiid.translator.jdbc.JDBCExecutionException: 1 TEIID11008:TEIID11004 Error executing statement(s): [SQL: SELECT g_0.stringkey AS c_0, (g_0.stringkey + 3.0) AS c_1 FROM smalla AS g_0 LIMIT 100]
        at org.teiid.translator.jdbc.JDBCQueryExecution.execute(JDBCQueryExecution.java:131) [translator-jdbc-8.12.11.6_4-redhat-64-7.jar:8.12.11.6_4-redhat-64-7]
        at org.teiid.dqp.internal.datamgr.ConnectorWorkItem.execute(ConnectorWorkItem.java:363)
        at sun.reflect.GeneratedMethodAccessor171.invoke(Unknown Source) [:1.8.0_141]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_141]
        at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_141]
        at org.teiid.dqp.internal.datamgr.ConnectorManager$1.invoke(ConnectorManager.java:211)
        at com.sun.proxy.$Proxy80.execute(Unknown Source)
        at org.teiid.dqp.internal.process.DataTierTupleSource.getResults(DataTierTupleSource.java:306)
        at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:112)
        at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:108)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [rt.jar:1.8.0_141]
        at org.teiid.dqp.internal.process.FutureWork.run(FutureWork.java:65)
        at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:284)
        at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:119)
        at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:210)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [rt.jar:1.8.0_141]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [rt.jar:1.8.0_141]
        at java.lang.Thread.run(Thread.java:748) [rt.jar:1.8.0_141]
Caused by: java.sql.SQLException: Query failed (#20171121_110032_00034_8zhqn): line 1:45: '+' cannot be applied to varchar(10), double
        at com.facebook.presto.jdbc.PrestoResultSet.resultsException(PrestoResultSet.java:1799)
        at com.facebook.presto.jdbc.PrestoResultSet.getColumns(PrestoResultSet.java:1747)
        at com.facebook.presto.jdbc.PrestoResultSet.<init>(PrestoResultSet.java:125)
        at com.facebook.presto.jdbc.PrestoStatement.execute(PrestoStatement.java:212)
        at com.facebook.presto.jdbc.PrestoStatement.executeQuery(PrestoStatement.java:69)
        at org.jboss.jca.adapters.jdbc.WrappedStatement.executeQuery(WrappedStatement.java:344)
        at org.teiid.translator.jdbc.JDBCQueryExecution.execute(JDBCQueryExecution.java:119) [translator-jdbc-8.12.11.6_4-redhat-64-7.jar:8.12.11.6_4-redhat-64-7]
        ... 17 more