runtime/executor/src/main/java/org/apache/nemo/runtime/executor/data/DataUtil.java [404:415]:
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        @Override
        public boolean hasNext() {
          return innerIterator.hasNext();
        }

        @Override
        public E next() {
          return innerIterator.next();
        }

        @Override
        public boolean isReadNotSerializedData() {
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runtime/executor/src/main/java/org/apache/nemo/runtime/executor/data/DataUtil.java [454:465]:
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        @Override
        public boolean hasNext() {
          return innerIterator.hasNext();
        }

        @Override
        public E next() {
          return innerIterator.next();
        }

        @Override
        public boolean isReadNotSerializedData() {
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