[Java] Exception when trying to load next batch while reading a parquet file

### Describe the bug, including details regarding any error messages, version, and platform.

Getting this exception when trying to load next batch while reading a parquet file.
The parsing works if the batch size is big enough to process all the parquet contents in one shot. But if I try to give a smaller batch size , the code breaks giving the below exception

java.lang.IllegalArgumentException: should have as many children as in the schema: found 0 expected 8
at org.apache.arrow.util.Preconditions.checkArgument(Preconditions.java:282)
at org.apache.arrow.vector.VectorLoader.loadBuffers(VectorLoader.java:127)
at org.apache.arrow.vector.VectorLoader.load(VectorLoader.java:84)
at org.apache.arrow.c.Data.importIntoVectorSchemaRoot(Data.java:334)
at org.apache.arrow.dataset.jni.NativeScanner$NativeReader.loadNextBatch(NativeScanner.java:151)

### Component(s)

Java

首先，在批次大小小于完整内容的情况下加载 parquet 文件，复现该失败。阅读 NativeScanner.java 中的 loadNextBatch，然后跟踪经过 Data.importIntoVectorSchemaRoot 和 VectorLoader.loadBuffers 的调用。完成的标准是后续批次能够在不触发 schema-child-count exception 的情况下加载，但 issue 没有提供测试文件或复现文件。

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