[jira] [Created] (FLINK-14647) Improve the exception message when required property is not matched

[Shang Yuanchun (Jira)]

Jark Wu created FLINK-14647:
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             Summary: Improve the exception message when required property is not matched
                 Key: FLINK-14647
                 URL: https://issues.apache.org/jira/browse/FLINK-14647
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / API
            Reporter: Jark Wu
             Fix For: 1.10.0


Currently, all the required properties should exist and match, otherwise, {{NoMatchingTableFactoryException}} will be thrown.

For example, if we have {{connector.type=hbase,  connector.versions=1.1.1}}, the following exception will be thrown.


{code}
org.apache.flink.table.api.NoMatchingTableFactoryException: Could not find a suitable table factory for 'org.apache.flink.addons.hbase.HBaseTableFactory' in
the classpath.

Reason: No context matches.

The following properties are requested:
connector.type=hbase
connector.version=1.1.1
{code}

It's hard to know the problem is the version is wrong. A quick fixing is move version out of {{requiredContext()}} if we only support one version and throw a readable exception in {{ConnectorDescriptorValidator#validate}}.

However, for the multiple-version connectors, e.g. Kafka, maybe we should improve the design of {{TableFactory}}.



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