apache/shardingsphere · error · SQLFeatureNotSupportedException

abort

Error message

abort

What it means

ShardingSphere's JDBC driver does not implement the java.sql.Connection method abort (forcibly terminating an open connection from another thread, as specified by JDBC 4). The abstract base class AbstractUnsupportedOperationConnection, which ShardingSphereConnection extends, overrides it as final and unconditionally throws SQLFeatureNotSupportedException. ShardingSphere connections may fan out to multiple real backend connections, and coordinated cross-thread abort of all of them is not implemented, so the method always throws. The exception is thrown the moment the method is invoked on any connection produced by the ShardingSphere Driver.

Source

Thrown at jdbc/src/main/java/org/apache/shardingsphere/driver/jdbc/unsupported/AbstractUnsupportedOperationConnection.java:64

    
    @Override
    public final CallableStatement prepareCall(final String sql, final int resultSetType, final int resultSetConcurrency) throws SQLException {
        throw new SQLFeatureNotSupportedException("prepareCall");
    }
    
    @Override
    public final CallableStatement prepareCall(final String sql, final int resultSetType, final int resultSetConcurrency, final int resultSetHoldability) throws SQLException {
        throw new SQLFeatureNotSupportedException("prepareCall");
    }
    
    @Override
    public final String nativeSQL(final String sql) throws SQLException {
        throw new SQLFeatureNotSupportedException("nativeSQL");
    }
    
    @Override
    public final void abort(final Executor executor) throws SQLException {
        throw new SQLFeatureNotSupportedException("abort");
    }
    
    @Override
    public final Map<String, Class<?>> getTypeMap() throws SQLException {
        throw new SQLFeatureNotSupportedException("getTypeMap");
    }
    
    @Override
    public final void setTypeMap(final Map<String, Class<?>> map) throws SQLException {
        throw new SQLFeatureNotSupportedException("setTypeMap");
    }
    
    @Override
    public int getNetworkTimeout() throws SQLException {
        throw new SQLFeatureNotSupportedException("getNetworkTimeout");
    }
    
    @Override

View on GitHub (pinned to e952770a21)

Solutions

1. Let the connection be closed normally with Connection.close(), which ShardingSphere fully supports, instead of abort().
2. Configure the surrounding connection pool to use close()/isValid-based eviction rather than abort-based eviction.
3. If a hard kill is truly required, close the underlying real connections obtained via unwrap(), accepting that ShardingSphere's metadata about them becomes stale.

boolean supportsOp = false;
try {
    connection.getMetaData(); // connection is alive
    // JDBC has no capability flag for individual methods; probe once per JVM:
    supportsOp = probeSupport(connection); // reflective/one-time guarded call
} catch (final SQLException ignored) {
}
// Simpler and recommended: capability-check by driver URL
boolean isShardingSphere = url.startsWith("jdbc:shardingsphere:");
if (isShardingSphere) {
    // skip the unsupported call, use the alternative API path
}

try {
    connection.abort(/* args */);
} catch (final SQLFeatureNotSupportedException e) {
    // expected on ShardingSphere connections: fall back to supported API
    log.debug("Driver does not support abort, using fallback", e);
}

When it happens

Trigger: Calling Connection.abort(executor) on a ShardingSphere connection, typically from a watchdog thread or a connection pool's abnormal-connection handling.

Common situations: JDBC-pool implementations (e.g. custom pools, UCP) that call abort() when cleaning up stuck connections; applications implementing their own connection timeouts; monitoring agents (JDBC wrappers, profilers) that probe abort support during startup.

Related errors

• prepareCall
• nativeSQL
• getTypeMap
• setTypeMap
• getNetworkTimeout

AI-assisted analysis of apache/shardingsphere@e952770a21 (2026-08-14). Data as JSON: /api/errors/841258dbd37b88cb. Report an issue: GitHub.