private Handler<AsyncResult<Void>> getAsyncResultHandler() {
        return done -> {
            if (done.failed()) {
                LOG.error("sql client close failed! " +
                        ExceptionTrace.traceOriginalCause(done.cause())
                );
            }

            if (done.succeeded()) {
                LOG.info("sql client closed.");
            }
        };
    }
Date: 2018/11/26
Company: www.dtstack.com

@author maqi
rdb/rdb-side/src/main/java/com/dtstack/flink/sql/side/rdb/async/RdbAsyncReqRow.java