seaweedfs/src/main/java/site/ycsb/db/seaweed/SeaweedClient.java [286:304]:
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  protected static void fromJson(
          String value, Set<String> fields,
          Map<String, ByteIterator> result) throws IOException {
    JsonNode json = MAPPER.readTree(value);
    boolean checkFields = fields != null && !fields.isEmpty();
    for (Iterator<Map.Entry<String, JsonNode>> jsonFields = json.getFields();
         jsonFields.hasNext();
      /* increment in loop body */) {
      Map.Entry<String, JsonNode> jsonField = jsonFields.next();
      String name = jsonField.getKey();
      if (checkFields && !fields.contains(name)) {
        continue;
      }
      JsonNode jsonValue = jsonField.getValue();
      if (jsonValue != null && !jsonValue.isNull()) {
        result.put(name, new StringByteIterator(jsonValue.asText()));
      }
    }
  }
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memcached/src/main/java/site/ycsb/db/MemcachedClient.java [270:288]:
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  protected static void fromJson(
      String value, Set<String> fields,
      Map<String, ByteIterator> result) throws IOException {
    JsonNode json = MAPPER.readTree(value);
    boolean checkFields = fields != null && !fields.isEmpty();
    for (Iterator<Map.Entry<String, JsonNode>> jsonFields = json.getFields();
         jsonFields.hasNext();
         /* increment in loop body */) {
      Map.Entry<String, JsonNode> jsonField = jsonFields.next();
      String name = jsonField.getKey();
      if (checkFields && !fields.contains(name)) {
        continue;
      }
      JsonNode jsonValue = jsonField.getValue();
      if (jsonValue != null && !jsonValue.isNull()) {
        result.put(name, new StringByteIterator(jsonValue.asText()));
      }
    }
  }
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