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

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

     [ https://issues.apache.org/jira/browse/IMPALA-10571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zoltán Borók-Nagy resolved IMPALA-10571.
----------------------------------------
    Fix Version/s: Impala 4.0
       Resolution: Fixed

> 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
>            Assignee: Zoltán Borók-Nagy
>            Priority: Major
>             Fix For: Impala 4.0
>
>
> 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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