Brimborion opened a new issue #11656:
URL: https://github.com/apache/druid/issues/11656
### Affected Version
Druid 0.21.1
Avatica 1.18.0
### Description
When I send a query via JDBC driver with a numerical property (eg.
numParallelCombineThreads), I get a ClassCastException.
This is an example of how I send the query with context property :
```
val properties = new Properties()
properties.setProperty("numParallelCombineThreads", "4")
val connection = DriverManager.getConnection(url, properties)
val statement = connection.createStatement()
val resultSet = statement.executeQuery(query)
```
and the response I get
```
Exception in thread "main" org.apache.calcite.avatica.AvaticaSqlException:
Error -1 (00000) : Error while executing SQL "select caseid from
"2a03cee0-2511-4ee2-b2e9-0068527fc437" group by caseid": Remote driver error:
RuntimeException: java.util.concurrent.ExecutionException:
java.lang.ClassCastException: java.lang.String cannot be cast to
java.lang.Integer
```
I also tried with put method, but I get the same error
```
properties.put("numParallelCombineThreads", 4)
```
Requests with string and boolean properties are processed successfully, the
problem arise only with numerical values.
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