[KAFKA-5863] Potential null dereference in DistributedHerder#reconfigureConnector()

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.8.0
• Component/s: connect
• Assignee: Greg Harris
• Reporter: Ted Yu
• Created: 08/Sep/17 20:45
• Updated: 18/Jan/24 19:41
• Resolved: 18/Jan/24 19:41

Description

Here is the call chain:

                                RestServer.httpRequest(reconfigUrl, "POST", taskProps, null);

In httpRequest():

            } else if (responseCode >= 200 && responseCode < 300) {
                InputStream is = connection.getInputStream();
                T result = JSON_SERDE.readValue(is, responseFormat);

For readValue():

    public <T> T readValue(InputStream src, TypeReference valueTypeRef)
        throws IOException, JsonParseException, JsonMappingException
    {
        return (T) _readMapAndClose(_jsonFactory.createParser(src), _typeFactory.constructType(valueTypeRef));

Then there would be NPE in constructType():

    public JavaType constructType(TypeReference<?> typeRef)
    {
        // 19-Oct-2015, tatu: Simpler variant like so should work
        return _fromAny(null, typeRef.getType(), EMPTY_BINDINGS);

Issue Links

• links to: GitHub Pull Request #13294