[jira] [Created] (IMPALA-10571) ImpalaJdbcClient might silently choose a different driver than the one specified

["Zoltán Borók-Nagy (Jira)" <ji...@apache.org>]

Zoltán Borók-Nagy created IMPALA-10571:
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             Summary: ImpalaJdbcClient might silently choose a different driver than the one specified
                 Key: IMPALA-10571
                 URL: https://issues.apache.org/jira/browse/IMPALA-10571
             Project: IMPALA
          Issue Type: Bug
            Reporter: Zoltán Borók-Nagy


I was experimenting with drivers while running into this issue.

I tried to do some testing with a custom JDBC driver with the following command:
{noformat}
bin/run-jdbc-client.sh -d "my.impala.jdbc.Driver" -t NOSASL -q "select 1"{noformat}
The script outputted:
{noformat}
Using JDBC Driver Name: my.impala.jdbc.Driver
Connecting to: jdbc:impala://localhost:21050
Executing: select sleep(12000)
----[START]----
1
----[END]----{noformat}
However, after some debugging I figured out that ImpalaJdbcClient actually used org.apache.hive.jdbc.HiveDriver. It was because the specified driver didn't accept the default connection string (jdbc:hive2://...), therefore the HiveDriver was being used.

I think instead of silently choosing a different driver, ImpalaJdbcClient should raise an error and tell the user to specify the connection string as well.



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