prestodb/presto · error · ClientException

Invalid server URL:

Error message

Invalid server URL: 

What it means

getServerInfo in QueryExecutor converts the given server URI to an OkHttp HttpUrl; when HttpUrl.get(server) returns null the URI is not a valid absolute HTTP(S) URL, so this ClientException is thrown. The faulting input is the malformed coordinator URL supplied in the JDBC connection string.

Source

Thrown at presto-jdbc/src/main/java/com/facebook/presto/jdbc/QueryExecutor.java:53

    private static final JsonCodec<ServerInfo> SERVER_INFO_CODEC = jsonCodec(ServerInfo.class);

    private final OkHttpClient httpClient;

    public QueryExecutor(OkHttpClient httpClient)
    {
        this.httpClient = requireNonNull(httpClient, "httpClient is null");
    }

    public StatementClient startQuery(ClientSession session, String query)
    {
        return newStatementClient(httpClient, session, query);
    }

    public ServerInfo getServerInfo(URI server)
    {
        HttpUrl url = HttpUrl.get(server);
        if (url == null) {
            throw new ClientException("Invalid server URL: " + server);
        }
        url = url.newBuilder().encodedPath("/v1/info").build();

        Request request = new Request.Builder().url(url).build();

        JsonResponse<ServerInfo> response = JsonResponse.execute(SERVER_INFO_CODEC, httpClient, request);
        if (!response.hasValue()) {
            throw new RuntimeException(format("Request to %s failed: %s [Error: %s]", server, response, response.getResponseBody()));
        }
        return response.getValue();
    }
}

View on GitHub (pinned to 55bb57d202)

Solutions

1. Verify the coordinator URL in the JDBC string is an absolute http:// or https:// URL
2. Check for missing scheme, stray characters, or whitespace in the configured URL
3. Validate the URL with java.net.URI before constructing the connection

When it happens

Trigger: Thrown at presto-jdbc/src/main/java/com/facebook/presto/jdbc/QueryExecutor.java:53 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of prestodb/presto@55bb57d202 (2026-09-04). Data as JSON: /api/errors/e59751892c387bef. Report an issue: GitHub.