spark-doris-connector/src/main/java/org/apache/doris/spark/rest/RestService.java [540:556]:
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        } catch (com.fasterxml.jackson.core.JsonParseException e) {
            String errMsg = "Doris BE's response is not a json. res: " + response;
            logger.error(errMsg, e);
            throw new DorisException(errMsg, e);
        } catch (com.fasterxml.jackson.databind.JsonMappingException e) {
            String errMsg = "Doris BE's response cannot map to schema. res: " + response;
            logger.error(errMsg, e);
            throw new DorisException(errMsg, e);
        } catch (IOException e) {
            String errMsg = "Parse Doris BE's response to json failed. res: " + response;
            logger.error(errMsg, e);
            throw new DorisException(errMsg, e);
        }

        if (backend == null) {
            logger.error(SHOULD_NOT_HAPPEN_MESSAGE);
            throw new ShouldNeverHappenException();
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spark-doris-connector/src/main/java/org/apache/doris/spark/rest/RestService.java [613:629]:
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        } catch (com.fasterxml.jackson.core.JsonParseException e) {
            String errMsg = "Doris BE's response is not a json. res: " + response;
            logger.error(errMsg, e);
            throw new DorisException(errMsg, e);
        } catch (com.fasterxml.jackson.databind.JsonMappingException e) {
            String errMsg = "Doris BE's response cannot map to schema. res: " + response;
            logger.error(errMsg, e);
            throw new DorisException(errMsg, e);
        } catch (IOException e) {
            String errMsg = "Parse Doris BE's response to json failed. res: " + response;
            logger.error(errMsg, e);
            throw new DorisException(errMsg, e);
        }

        if (backend == null) {
            logger.error(SHOULD_NOT_HAPPEN_MESSAGE);
            throw new ShouldNeverHappenException();
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