[GitHub] [arrow] BryanCutler commented on a change in pull request #7275: ARROW-6110: [Java][Integration] Support LargeList Type and add integration test with C++

[GitBox <gi...@apache.org>]

BryanCutler commented on a change in pull request #7275:
URL: https://github.com/apache/arrow/pull/7275#discussion_r447866233



##########
File path: java/vector/src/main/java/org/apache/arrow/vector/BitVectorHelper.java
##########
@@ -73,6 +87,28 @@ public static void setBit(ArrowBuf validityBuffer, int index) {
     validityBuffer.setByte(byteIndex, currentByte);
   }
 
+  /**
+   * Set the bit at provided index to 1.
+   *
+   * @param validityBuffer validity buffer of the vector
+   * @param index index to be set
+   */
+  public static void setBit(ArrowBuf validityBuffer, long index) {
+    // it can be observed that some logic is duplicate of the logic in setValidityBit.

Review comment:
       please update the link in `setValidityBitToOne` here https://github.com/apache/arrow/pull/7275/files#diff-bc5e2a2a1b6b348c39f57c91defb855bL79

##########
File path: java/vector/src/main/codegen/templates/UnionLargeListWriter.java
##########
@@ -0,0 +1,232 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.vector.complex.writer.DecimalWriter;
+import org.apache.arrow.vector.holders.DecimalHolder;
+
+import java.lang.UnsupportedOperationException;
+import java.math.BigDecimal;
+
+<@pp.dropOutputFile />
+<@pp.changeOutputFile name="/org/apache/arrow/vector/complex/impl/UnionLargeListWriter.java" />
+
+
+<#include "/@includes/license.ftl" />
+
+package org.apache.arrow.vector.complex.impl;
+
+    import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+<#include "/@includes/vv_imports.ftl" />
+
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
+@SuppressWarnings("unused")
+public class UnionLargeListWriter extends AbstractFieldWriter {

Review comment:
       It would be nice not to add a new template and combine with the UnionListWriter if possible. That doesn't have to be done here though, it can be looked at later.

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/BitVectorHelper.java
##########
@@ -37,6 +37,20 @@
 
   private BitVectorHelper() {}
 
+  /**
+   * Get the index of byte corresponding to bit index in validity buffer.
+   */
+  public static long byteIndex(long absoluteBitIndex) {
+    return absoluteBitIndex >> 3;
+  }
+
+  /**
+   * Get the relative index of bit within the byte in validity buffer.
+   */
+  public static long bitIndex(long absoluteBitIndex) {

Review comment:
       Since this is the relative bit index, it's not possible to return long. Can you change return value to an `int`?

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {

Review comment:
       This logic seems to deviate from `ListVector.reallocateOffsetBuffer`, could you explain the reason for the difference? I don't see the case if `newAllocationSize` == 0.

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {
+    final long currentBufferCapacity = offsetBuffer.capacity();
+    long baseSize = offsetAllocationSizeInBytes;
+
+    if (baseSize < currentBufferCapacity) {
+      baseSize = currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    newAllocationSize = Math.min(newAllocationSize, (long) (OFFSET_WIDTH) * Integer.MAX_VALUE);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE || newAllocationSize <= baseSize) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer(newAllocationSize);
+    newBuf.setBytes(0, offsetBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    offsetBuffer.getReferenceManager().release(1);
+    offsetBuffer = newBuf;
+    offsetAllocationSizeInBytes = newAllocationSize;
+  }
+  
+  private void reallocValidityBuffer() {
+    final int currentBufferCapacity = checkedCastToInt(validityBuffer.capacity());
+    long baseSize = validityAllocationSizeInBytes;
+
+    if (baseSize < (long) currentBufferCapacity) {
+      baseSize = (long) currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer((int) newAllocationSize);
+    newBuf.setBytes(0, validityBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    validityBuffer.getReferenceManager().release(1);
+    validityBuffer = newBuf;
+    validityAllocationSizeInBytes = (int) newAllocationSize;
+  }
+
+  /**
+   * Same as {@link #copyFrom(int, int, ValueVector)} except that
+   * it handles the case when the capacity of the vector needs to be expanded
+   * before copy.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFromSafe(int inIndex, int outIndex, ValueVector from) {
+    copyFrom(inIndex, outIndex, from);
+  }
+
+  /**
+   * Copy a cell value from a particular index in source vector to a particular
+   * position in this vector.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFrom(int inIndex, int outIndex, ValueVector from) {
+    Preconditions.checkArgument(this.getMinorType() == from.getMinorType());
+    FieldReader in = from.getReader();
+    in.setPosition(inIndex);
+    UnionLargeListWriter out = getWriter();
+    out.setIndex(outIndex);
+    ComplexCopier.copy(in, out);
+  }
+
+  @Override
+  public UInt4Vector getOffsetVector() {

Review comment:
       maybe `throw new UnsupportedOperationException("There is no inner offset vector");` which is the behavior of `ListVector`?

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {
+    final long currentBufferCapacity = offsetBuffer.capacity();
+    long baseSize = offsetAllocationSizeInBytes;
+
+    if (baseSize < currentBufferCapacity) {
+      baseSize = currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    newAllocationSize = Math.min(newAllocationSize, (long) (OFFSET_WIDTH) * Integer.MAX_VALUE);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE || newAllocationSize <= baseSize) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer(newAllocationSize);
+    newBuf.setBytes(0, offsetBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    offsetBuffer.getReferenceManager().release(1);
+    offsetBuffer = newBuf;
+    offsetAllocationSizeInBytes = newAllocationSize;
+  }
+  
+  private void reallocValidityBuffer() {
+    final int currentBufferCapacity = checkedCastToInt(validityBuffer.capacity());
+    long baseSize = validityAllocationSizeInBytes;
+
+    if (baseSize < (long) currentBufferCapacity) {
+      baseSize = (long) currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer((int) newAllocationSize);
+    newBuf.setBytes(0, validityBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    validityBuffer.getReferenceManager().release(1);
+    validityBuffer = newBuf;
+    validityAllocationSizeInBytes = (int) newAllocationSize;
+  }
+
+  /**
+   * Same as {@link #copyFrom(int, int, ValueVector)} except that
+   * it handles the case when the capacity of the vector needs to be expanded
+   * before copy.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFromSafe(int inIndex, int outIndex, ValueVector from) {
+    copyFrom(inIndex, outIndex, from);
+  }
+
+  /**
+   * Copy a cell value from a particular index in source vector to a particular
+   * position in this vector.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFrom(int inIndex, int outIndex, ValueVector from) {
+    Preconditions.checkArgument(this.getMinorType() == from.getMinorType());
+    FieldReader in = from.getReader();
+    in.setPosition(inIndex);
+    UnionLargeListWriter out = getWriter();
+    out.setIndex(outIndex);
+    ComplexCopier.copy(in, out);
+  }
+
+  @Override
+  public UInt4Vector getOffsetVector() {
+    return null;
+  }
+
+  /**
+   * Get the inner data vector for this list vector.
+   * @return data vector
+   */
+  @Override
+  public FieldVector getDataVector() {
+    return vector;
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator) {
+    return getTransferPair(ref, allocator, null);
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator, CallBack callBack) {
+    return new TransferImpl(ref, allocator, callBack);
+  }
+
+  @Override
+  public TransferPair makeTransferPair(ValueVector target) {
+    return new TransferImpl((LargeListVector) target);
+  }
+
+  @Override
+  public long getValidityBufferAddress() {
+    return (validityBuffer.memoryAddress());
+  }
+
+  @Override
+  public long getDataBufferAddress() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public long getOffsetBufferAddress() {
+    return (offsetBuffer.memoryAddress());
+  }
+
+  @Override
+  public ArrowBuf getValidityBuffer() {
+    return validityBuffer;
+  }
+
+  @Override
+  public ArrowBuf getDataBuffer() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public ArrowBuf getOffsetBuffer() {
+    return offsetBuffer;
+  }
+
+  @Override
+  public int getValueCount() {
+    return valueCount;
+  }
+
+  @Override
+  public int hashCode(int index) {
+    return hashCode(index, null);
+  }
+
+  @Override
+  public int hashCode(int index, ArrowBufHasher hasher) {
+    if (isSet(index) == 0) {
+      return ArrowBufPointer.NULL_HASH_CODE;
+    }
+    int hash = 0;
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    for (long i = start; i < end; i++) {
+      hash = ByteFunctionHelpers.combineHash(hash, vector.hashCode(checkedCastToInt(i), hasher));
+    }
+    return hash;
+  }
+
+  @Override
+  public <OUT, IN> OUT accept(VectorVisitor<OUT, IN> visitor, IN value) {
+    return visitor.visit(this, value);
+  }
+
+  public UnionLargeListWriter getWriter() {
+    return new UnionLargeListWriter(this);
+  }
+
+  protected void replaceDataVector(FieldVector v) {
+    vector.clear();
+    vector = v;
+  }
+
+  @Override
+  public UnionVector promoteToUnion() {
+    UnionVector vector = new UnionVector("$data$", allocator, callBack);
+    replaceDataVector(vector);
+    invalidateReader();
+    if (callBack != null) {
+      callBack.doWork();
+    }
+    return vector;
+  }
+
+  private class TransferImpl implements TransferPair {
+
+    LargeListVector to;
+    TransferPair dataTransferPair;
+
+    public TransferImpl(String name, BufferAllocator allocator, CallBack callBack) {
+      this(new LargeListVector(name, allocator, fieldType, callBack));
+    }
+
+    public TransferImpl(LargeListVector to) {
+      this.to = to;
+      to.addOrGetVector(vector.getField().getFieldType());
+      if (to.getDataVector() instanceof ZeroVector) {
+        to.addOrGetVector(vector.getField().getFieldType());
+      }
+      dataTransferPair = getDataVector().makeTransferPair(to.getDataVector());
+    }
+
+    /**
+     * Transfer this vector'data to another vector. The memory associated
+     * with this vector is transferred to the allocator of target vector
+     * for accounting and management purposes.
+     */
+    @Override
+    public void transfer() {
+      to.clear();
+      dataTransferPair.transfer();
+      to.validityBuffer = transferBuffer(validityBuffer, to.allocator);
+      to.offsetBuffer = transferBuffer(offsetBuffer, to.allocator);
+      to.lastSet = lastSet;
+      if (valueCount > 0) {
+        to.setValueCount(valueCount);
+      }
+      clear();
+    }
+
+    /**
+     * Slice this vector at desired index and length and transfer the
+     * corresponding data to the target vector.
+     * @param startIndex start position of the split in source vector.
+     * @param length length of the split.
+     */
+    @Override
+    public void splitAndTransfer(int startIndex, int length) {
+      Preconditions.checkArgument(startIndex >= 0 && length >= 0 && startIndex + length <= valueCount,
+          "Invalid parameters startIndex: %s, length: %s for valueCount: %s", startIndex, length, valueCount);
+      final long startPoint = offsetBuffer.getLong(startIndex * OFFSET_WIDTH);
+      final long sliceLength = offsetBuffer.getLong((startIndex + length) * OFFSET_WIDTH) - startPoint;
+      to.clear();
+      to.allocateOffsetBuffer((length + 1) * OFFSET_WIDTH);
+      /* splitAndTransfer offset buffer */
+      for (int i = 0; i < length + 1; i++) {
+        final long relativeOffset = offsetBuffer.getLong((startIndex + i) * OFFSET_WIDTH) - startPoint;
+        to.offsetBuffer.setLong(i * OFFSET_WIDTH, relativeOffset);
+      }
+      /* splitAndTransfer validity buffer */
+      splitAndTransferValidityBuffer(startIndex, length, to);
+      /* splitAndTransfer data buffer */
+      dataTransferPair.splitAndTransfer(checkedCastToInt(startPoint), checkedCastToInt(sliceLength));
+      to.lastSet = length - 1;
+      to.setValueCount(length);
+    }
+
+    /*
+     * transfer the validity.
+     */
+    private void splitAndTransferValidityBuffer(int startIndex, int length, LargeListVector target) {
+      int firstByteSource = BitVectorHelper.byteIndex(startIndex);
+      int lastByteSource = BitVectorHelper.byteIndex(valueCount - 1);
+      int byteSizeTarget = getValidityBufferSizeFromCount(length);
+      int offset = startIndex % 8;
+
+      if (length > 0) {
+        if (offset == 0) {
+          // slice
+          if (target.validityBuffer != null) {
+            target.validityBuffer.getReferenceManager().release();
+          }
+          target.validityBuffer = validityBuffer.slice(firstByteSource, byteSizeTarget);
+          target.validityBuffer.getReferenceManager().retain(1);
+        } else {
+          /* Copy data
+           * When the first bit starts from the middle of a byte (offset != 0),
+           * copy data from src BitVector.
+           * Each byte in the target is composed by a part in i-th byte,
+           * another part in (i+1)-th byte.
+           */
+          target.allocateValidityBuffer(byteSizeTarget);
+
+          for (int i = 0; i < byteSizeTarget - 1; i++) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer, firstByteSource + i, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer, firstByteSource + i + 1, offset);
+
+            target.validityBuffer.setByte(i, (b1 + b2));
+          }
+
+          /* Copying the last piece is done in the following manner:
+           * if the source vector has 1 or more bytes remaining, we copy
+           * the last piece as a byte formed by shifting data
+           * from the current byte and the next byte.
+           *
+           * if the source vector has no more bytes remaining
+           * (we are at the last byte), we copy the last piece as a byte
+           * by shifting data from the current byte.
+           */
+          if ((firstByteSource + byteSizeTarget - 1) < lastByteSource) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer,
+                    firstByteSource + byteSizeTarget, offset);
+
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1 + b2);
+          } else {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1);
+          }
+        }
+      }
+    }
+
+    @Override
+    public ValueVector getTo() {
+      return to;
+    }
+
+    @Override
+    public void copyValueSafe(int from, int to) {
+      this.to.copyFrom(from, to, LargeListVector.this);
+    }
+  }
+
+  @Override
+  public UnionLargeListReader getReader() {
+    if (reader == null) {
+      reader = new UnionLargeListReader(this);
+    }
+    return reader;
+  }
+
+  /**
+   * Initialize the data vector (and execute callback) if it hasn't already been done,
+   * returns the data vector.
+   */
+  public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType) {
+    boolean created = false;
+    if (vector instanceof NullVector) {
+      vector = fieldType.createNewSingleVector(defaultDataVectorName, allocator, callBack);
+      // returned vector must have the same field
+      created = true;
+      if (callBack != null &&
+          // not a schema change if changing from ZeroVector to ZeroVector
+          (fieldType.getType().getTypeID() != ArrowType.ArrowTypeID.Null)) {
+        callBack.doWork();
+      }
+    }
+
+    if (vector.getField().getType().getTypeID() != fieldType.getType().getTypeID()) {
+      final String msg = String.format("Inner vector type mismatch. Requested type: [%s], actual type: [%s]",
+          fieldType.getType().getTypeID(), vector.getField().getType().getTypeID());
+      throw new SchemaChangeRuntimeException(msg);
+    }
+
+    invalidateReader();
+    return new AddOrGetResult<>((T) vector, created);
+  }
+
+  /**
+   * Get the size (number of bytes) of underlying buffers used by this
+   * vector.
+   * @return size of underlying buffers.
+   */
+  @Override
+  public int getBufferSize() {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int offsetBufferSize = (valueCount + 1) * OFFSET_WIDTH;
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    return offsetBufferSize + validityBufferSize + vector.getBufferSize();
+  }
+  
+  @Override
+  public int getBufferSizeFor(int valueCount) {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    long innerVectorValueCount = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+
+    return ((valueCount + 1) * OFFSET_WIDTH) +
+        vector.getBufferSizeFor(checkedCastToInt(innerVectorValueCount)) +
+        validityBufferSize;
+  }
+
+  @Override
+  public Field getField() {
+    return new Field(getName(), fieldType, Collections.singletonList(getDataVector().getField()));
+  }
+
+  @Override
+  public MinorType getMinorType() {
+    return MinorType.LIST;

Review comment:
       LARGELIST

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/ipc/JsonFileReader.java
##########
@@ -564,8 +564,10 @@ private ArrowBuf readIntoBuffer(BufferAllocator allocator, BufferType bufferType
     } else if (bufferType.equals(OFFSET)) {
       if (type == Types.MinorType.LARGEVARCHAR || type == Types.MinorType.LARGEVARBINARY) {

Review comment:
       could you add a check for `Types.MinorType.LARGELIST` here are remove the changes below?

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {
+    final long currentBufferCapacity = offsetBuffer.capacity();
+    long baseSize = offsetAllocationSizeInBytes;
+
+    if (baseSize < currentBufferCapacity) {
+      baseSize = currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    newAllocationSize = Math.min(newAllocationSize, (long) (OFFSET_WIDTH) * Integer.MAX_VALUE);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE || newAllocationSize <= baseSize) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer(newAllocationSize);
+    newBuf.setBytes(0, offsetBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    offsetBuffer.getReferenceManager().release(1);
+    offsetBuffer = newBuf;
+    offsetAllocationSizeInBytes = newAllocationSize;
+  }
+  
+  private void reallocValidityBuffer() {
+    final int currentBufferCapacity = checkedCastToInt(validityBuffer.capacity());
+    long baseSize = validityAllocationSizeInBytes;
+
+    if (baseSize < (long) currentBufferCapacity) {
+      baseSize = (long) currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer((int) newAllocationSize);
+    newBuf.setBytes(0, validityBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    validityBuffer.getReferenceManager().release(1);
+    validityBuffer = newBuf;
+    validityAllocationSizeInBytes = (int) newAllocationSize;
+  }
+
+  /**
+   * Same as {@link #copyFrom(int, int, ValueVector)} except that
+   * it handles the case when the capacity of the vector needs to be expanded
+   * before copy.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFromSafe(int inIndex, int outIndex, ValueVector from) {
+    copyFrom(inIndex, outIndex, from);
+  }
+
+  /**
+   * Copy a cell value from a particular index in source vector to a particular
+   * position in this vector.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFrom(int inIndex, int outIndex, ValueVector from) {
+    Preconditions.checkArgument(this.getMinorType() == from.getMinorType());
+    FieldReader in = from.getReader();
+    in.setPosition(inIndex);
+    UnionLargeListWriter out = getWriter();
+    out.setIndex(outIndex);
+    ComplexCopier.copy(in, out);
+  }
+
+  @Override
+  public UInt4Vector getOffsetVector() {
+    return null;
+  }
+
+  /**
+   * Get the inner data vector for this list vector.
+   * @return data vector
+   */
+  @Override
+  public FieldVector getDataVector() {
+    return vector;
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator) {
+    return getTransferPair(ref, allocator, null);
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator, CallBack callBack) {
+    return new TransferImpl(ref, allocator, callBack);
+  }
+
+  @Override
+  public TransferPair makeTransferPair(ValueVector target) {
+    return new TransferImpl((LargeListVector) target);
+  }
+
+  @Override
+  public long getValidityBufferAddress() {
+    return (validityBuffer.memoryAddress());
+  }
+
+  @Override
+  public long getDataBufferAddress() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public long getOffsetBufferAddress() {
+    return (offsetBuffer.memoryAddress());
+  }
+
+  @Override
+  public ArrowBuf getValidityBuffer() {
+    return validityBuffer;
+  }
+
+  @Override
+  public ArrowBuf getDataBuffer() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public ArrowBuf getOffsetBuffer() {
+    return offsetBuffer;
+  }
+
+  @Override
+  public int getValueCount() {
+    return valueCount;
+  }
+
+  @Override
+  public int hashCode(int index) {
+    return hashCode(index, null);
+  }
+
+  @Override
+  public int hashCode(int index, ArrowBufHasher hasher) {
+    if (isSet(index) == 0) {
+      return ArrowBufPointer.NULL_HASH_CODE;
+    }
+    int hash = 0;
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    for (long i = start; i < end; i++) {
+      hash = ByteFunctionHelpers.combineHash(hash, vector.hashCode(checkedCastToInt(i), hasher));
+    }
+    return hash;
+  }
+
+  @Override
+  public <OUT, IN> OUT accept(VectorVisitor<OUT, IN> visitor, IN value) {
+    return visitor.visit(this, value);
+  }
+
+  public UnionLargeListWriter getWriter() {
+    return new UnionLargeListWriter(this);
+  }
+
+  protected void replaceDataVector(FieldVector v) {
+    vector.clear();
+    vector = v;
+  }
+
+  @Override
+  public UnionVector promoteToUnion() {
+    UnionVector vector = new UnionVector("$data$", allocator, callBack);
+    replaceDataVector(vector);
+    invalidateReader();
+    if (callBack != null) {
+      callBack.doWork();
+    }
+    return vector;
+  }
+
+  private class TransferImpl implements TransferPair {
+
+    LargeListVector to;
+    TransferPair dataTransferPair;
+
+    public TransferImpl(String name, BufferAllocator allocator, CallBack callBack) {
+      this(new LargeListVector(name, allocator, fieldType, callBack));
+    }
+
+    public TransferImpl(LargeListVector to) {
+      this.to = to;
+      to.addOrGetVector(vector.getField().getFieldType());
+      if (to.getDataVector() instanceof ZeroVector) {
+        to.addOrGetVector(vector.getField().getFieldType());
+      }
+      dataTransferPair = getDataVector().makeTransferPair(to.getDataVector());
+    }
+
+    /**
+     * Transfer this vector'data to another vector. The memory associated
+     * with this vector is transferred to the allocator of target vector
+     * for accounting and management purposes.
+     */
+    @Override
+    public void transfer() {
+      to.clear();
+      dataTransferPair.transfer();
+      to.validityBuffer = transferBuffer(validityBuffer, to.allocator);
+      to.offsetBuffer = transferBuffer(offsetBuffer, to.allocator);
+      to.lastSet = lastSet;
+      if (valueCount > 0) {
+        to.setValueCount(valueCount);
+      }
+      clear();
+    }
+
+    /**
+     * Slice this vector at desired index and length and transfer the
+     * corresponding data to the target vector.
+     * @param startIndex start position of the split in source vector.
+     * @param length length of the split.
+     */
+    @Override
+    public void splitAndTransfer(int startIndex, int length) {
+      Preconditions.checkArgument(startIndex >= 0 && length >= 0 && startIndex + length <= valueCount,
+          "Invalid parameters startIndex: %s, length: %s for valueCount: %s", startIndex, length, valueCount);
+      final long startPoint = offsetBuffer.getLong(startIndex * OFFSET_WIDTH);
+      final long sliceLength = offsetBuffer.getLong((startIndex + length) * OFFSET_WIDTH) - startPoint;
+      to.clear();
+      to.allocateOffsetBuffer((length + 1) * OFFSET_WIDTH);
+      /* splitAndTransfer offset buffer */
+      for (int i = 0; i < length + 1; i++) {
+        final long relativeOffset = offsetBuffer.getLong((startIndex + i) * OFFSET_WIDTH) - startPoint;
+        to.offsetBuffer.setLong(i * OFFSET_WIDTH, relativeOffset);
+      }
+      /* splitAndTransfer validity buffer */
+      splitAndTransferValidityBuffer(startIndex, length, to);
+      /* splitAndTransfer data buffer */
+      dataTransferPair.splitAndTransfer(checkedCastToInt(startPoint), checkedCastToInt(sliceLength));
+      to.lastSet = length - 1;
+      to.setValueCount(length);
+    }
+
+    /*
+     * transfer the validity.
+     */
+    private void splitAndTransferValidityBuffer(int startIndex, int length, LargeListVector target) {
+      int firstByteSource = BitVectorHelper.byteIndex(startIndex);
+      int lastByteSource = BitVectorHelper.byteIndex(valueCount - 1);
+      int byteSizeTarget = getValidityBufferSizeFromCount(length);
+      int offset = startIndex % 8;
+
+      if (length > 0) {
+        if (offset == 0) {
+          // slice
+          if (target.validityBuffer != null) {
+            target.validityBuffer.getReferenceManager().release();
+          }
+          target.validityBuffer = validityBuffer.slice(firstByteSource, byteSizeTarget);
+          target.validityBuffer.getReferenceManager().retain(1);
+        } else {
+          /* Copy data
+           * When the first bit starts from the middle of a byte (offset != 0),
+           * copy data from src BitVector.
+           * Each byte in the target is composed by a part in i-th byte,
+           * another part in (i+1)-th byte.
+           */
+          target.allocateValidityBuffer(byteSizeTarget);
+
+          for (int i = 0; i < byteSizeTarget - 1; i++) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer, firstByteSource + i, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer, firstByteSource + i + 1, offset);
+
+            target.validityBuffer.setByte(i, (b1 + b2));
+          }
+
+          /* Copying the last piece is done in the following manner:
+           * if the source vector has 1 or more bytes remaining, we copy
+           * the last piece as a byte formed by shifting data
+           * from the current byte and the next byte.
+           *
+           * if the source vector has no more bytes remaining
+           * (we are at the last byte), we copy the last piece as a byte
+           * by shifting data from the current byte.
+           */
+          if ((firstByteSource + byteSizeTarget - 1) < lastByteSource) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer,
+                    firstByteSource + byteSizeTarget, offset);
+
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1 + b2);
+          } else {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1);
+          }
+        }
+      }
+    }
+
+    @Override
+    public ValueVector getTo() {
+      return to;
+    }
+
+    @Override
+    public void copyValueSafe(int from, int to) {
+      this.to.copyFrom(from, to, LargeListVector.this);
+    }
+  }
+
+  @Override
+  public UnionLargeListReader getReader() {
+    if (reader == null) {
+      reader = new UnionLargeListReader(this);
+    }
+    return reader;
+  }
+
+  /**
+   * Initialize the data vector (and execute callback) if it hasn't already been done,
+   * returns the data vector.
+   */
+  public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType) {
+    boolean created = false;
+    if (vector instanceof NullVector) {
+      vector = fieldType.createNewSingleVector(defaultDataVectorName, allocator, callBack);
+      // returned vector must have the same field
+      created = true;
+      if (callBack != null &&
+          // not a schema change if changing from ZeroVector to ZeroVector
+          (fieldType.getType().getTypeID() != ArrowType.ArrowTypeID.Null)) {
+        callBack.doWork();
+      }
+    }
+
+    if (vector.getField().getType().getTypeID() != fieldType.getType().getTypeID()) {
+      final String msg = String.format("Inner vector type mismatch. Requested type: [%s], actual type: [%s]",
+          fieldType.getType().getTypeID(), vector.getField().getType().getTypeID());
+      throw new SchemaChangeRuntimeException(msg);
+    }
+
+    invalidateReader();
+    return new AddOrGetResult<>((T) vector, created);
+  }
+
+  /**
+   * Get the size (number of bytes) of underlying buffers used by this
+   * vector.
+   * @return size of underlying buffers.
+   */
+  @Override
+  public int getBufferSize() {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int offsetBufferSize = (valueCount + 1) * OFFSET_WIDTH;
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    return offsetBufferSize + validityBufferSize + vector.getBufferSize();
+  }
+  
+  @Override
+  public int getBufferSizeFor(int valueCount) {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    long innerVectorValueCount = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+
+    return ((valueCount + 1) * OFFSET_WIDTH) +
+        vector.getBufferSizeFor(checkedCastToInt(innerVectorValueCount)) +
+        validityBufferSize;
+  }
+
+  @Override
+  public Field getField() {
+    return new Field(getName(), fieldType, Collections.singletonList(getDataVector().getField()));
+  }
+
+  @Override
+  public MinorType getMinorType() {
+    return MinorType.LIST;
+  }
+
+  @Override
+  public String getName() {
+    return null;
+  }
+
+  @Override
+  public void clear() {
+    offsetBuffer = releaseBuffer(offsetBuffer);
+    vector.clear();
+    valueCount = 0;
+    super.clear();
+    validityBuffer = releaseBuffer(validityBuffer);
+    lastSet = -1;
+  }
+
+  @Override
+  public void reset() {
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+    vector.reset();
+    valueCount = 0;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+    lastSet = -1;
+  }
+
+  /**
+   * Return the underlying buffers associated with this vector. Note that this doesn't
+   * impact the reference counts for this buffer so it only should be used for in-context
+   * access. Also note that this buffer changes regularly thus
+   * external classes shouldn't hold a reference to it (unless they change it).
+   *
+   * @param clear Whether to clear vector before returning; the buffers will still be refcounted
+   *              but the returned array will be the only reference to them
+   * @return The underlying {@link ArrowBuf buffers} that is used by this
+   *         vector instance.
+   */
+  @Override
+  public ArrowBuf[] getBuffers(boolean clear) {
+    setReaderAndWriterIndex();
+    final ArrowBuf[] buffers;
+    if (getBufferSize() == 0) {
+      buffers = new ArrowBuf[0];
+    } else {
+      List<ArrowBuf> list = new ArrayList<>();
+      list.add(offsetBuffer);
+      list.add(validityBuffer);
+      list.addAll(Arrays.asList(vector.getBuffers(false)));
+      buffers = list.toArray(new ArrowBuf[list.size()]);
+    }
+    if (clear) {
+      for (ArrowBuf buffer : buffers) {
+        buffer.getReferenceManager().retain();
+      }
+      clear();
+    }
+    return buffers;
+  }
+
+  protected void invalidateReader() {
+    reader = null;
+  }
+
+  /**
+   * Get the element in the list vector at a particular index.
+   * @param index position of the element
+   * @return Object at given position
+   */
+  @Override
+  public Object getObject(int index) {
+    if (isSet(index) == 0) {
+      return null;
+    }
+    final List<Object> vals = new JsonStringArrayList<>();
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    final ValueVector vv = getDataVector();
+    for (long i = start; i < end; i++) {
+      vals.add(vv.getObject(checkedCastToInt(i)));
+    }
+
+    return vals;
+  }
+
+  /**
+   * Check if element at given index is null.
+   *
+   * @param index position of element
+   * @return true if element at given index is null, false otherwise
+   */
+  @Override
+  public boolean isNull(int index) {
+    return (isSet(index) == 0);
+  }
+
+  /**
+   * Check if element at given index is empty list.
+   * @param index position of element
+   * @return true if element at given index is empty list or NULL, false otherwise
+   */
+  public boolean isEmpty(int index) {
+    if (isNull(index)) {
+      return true;
+    } else {
+      final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+      final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+      return start == end;
+    }
+  }
+
+  /**
+   * Same as {@link #isNull(int)}.
+   *
+   * @param index  position of element
+   * @return 1 if element at given index is not null, 0 otherwise
+   */
+  public int isSet(int index) {
+    final int byteIndex = index >> 3;
+    final byte b = validityBuffer.getByte(byteIndex);
+    final int bitIndex = index & 7;
+    return (b >> bitIndex) & 0x01;
+  }
+
+  /**
+   * Get the number of elements that are null in the vector.
+   *
+   * @return the number of null elements.
+   */
+  @Override
+  public int getNullCount() {
+    return BitVectorHelper.getNullCount(validityBuffer, valueCount);
+  }
+
+  /**
+   * Get the current value capacity for the vector.
+   * @return number of elements that vector can hold.
+   */
+  @Override
+  public int getValueCapacity() {
+    return getValidityAndOffsetValueCapacity();
+  }
+  
+  protected int getOffsetBufferValueCapacity() {
+    return checkedCastToInt(offsetBuffer.capacity() / OFFSET_WIDTH);
+  }
+  
+  private int getValidityAndOffsetValueCapacity() {
+    final int offsetValueCapacity = Math.max(getOffsetBufferValueCapacity() - 1, 0);
+    return Math.min(offsetValueCapacity, getValidityBufferValueCapacity());
+  }
+
+  private int getValidityBufferValueCapacity() {
+    return capAtMaxInt(validityBuffer.capacity() * 8);
+  }
+
+  /**
+   * Sets the list at index to be not-null.  Reallocates validity buffer if index
+   * is larger than current capacity.
+   */
+  public void setNotNull(int index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+  }
+
+  /**
+   * Start a new value in the list vector.
+   *
+   * @param index index of the value to start
+   */
+  public long startNewValue(long index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    for (long i = lastSet + 1; i <= index; i++) {
+      final long currentOffset = offsetBuffer.getLong(i * OFFSET_WIDTH);
+      offsetBuffer.setLong((i + 1) * OFFSET_WIDTH, currentOffset);
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+    return checkedCastToInt(offsetBuffer.getLong((lastSet + 1) * OFFSET_WIDTH));
+  }
+
+  /**
+   * End the current value.
+   *
+   * @param index index of the value to end
+   * @param size  number of elements in the list that was written
+   */
+  public void endValue(int index, int size) {

Review comment:
       should `size` be long?

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {
+    final long currentBufferCapacity = offsetBuffer.capacity();
+    long baseSize = offsetAllocationSizeInBytes;
+
+    if (baseSize < currentBufferCapacity) {
+      baseSize = currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    newAllocationSize = Math.min(newAllocationSize, (long) (OFFSET_WIDTH) * Integer.MAX_VALUE);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE || newAllocationSize <= baseSize) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer(newAllocationSize);
+    newBuf.setBytes(0, offsetBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    offsetBuffer.getReferenceManager().release(1);
+    offsetBuffer = newBuf;
+    offsetAllocationSizeInBytes = newAllocationSize;
+  }
+  
+  private void reallocValidityBuffer() {
+    final int currentBufferCapacity = checkedCastToInt(validityBuffer.capacity());
+    long baseSize = validityAllocationSizeInBytes;
+
+    if (baseSize < (long) currentBufferCapacity) {
+      baseSize = (long) currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer((int) newAllocationSize);
+    newBuf.setBytes(0, validityBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    validityBuffer.getReferenceManager().release(1);
+    validityBuffer = newBuf;
+    validityAllocationSizeInBytes = (int) newAllocationSize;
+  }
+
+  /**
+   * Same as {@link #copyFrom(int, int, ValueVector)} except that
+   * it handles the case when the capacity of the vector needs to be expanded
+   * before copy.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFromSafe(int inIndex, int outIndex, ValueVector from) {
+    copyFrom(inIndex, outIndex, from);
+  }
+
+  /**
+   * Copy a cell value from a particular index in source vector to a particular
+   * position in this vector.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFrom(int inIndex, int outIndex, ValueVector from) {
+    Preconditions.checkArgument(this.getMinorType() == from.getMinorType());
+    FieldReader in = from.getReader();
+    in.setPosition(inIndex);
+    UnionLargeListWriter out = getWriter();
+    out.setIndex(outIndex);
+    ComplexCopier.copy(in, out);
+  }
+
+  @Override
+  public UInt4Vector getOffsetVector() {
+    return null;
+  }
+
+  /**
+   * Get the inner data vector for this list vector.
+   * @return data vector
+   */
+  @Override
+  public FieldVector getDataVector() {
+    return vector;
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator) {
+    return getTransferPair(ref, allocator, null);
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator, CallBack callBack) {
+    return new TransferImpl(ref, allocator, callBack);
+  }
+
+  @Override
+  public TransferPair makeTransferPair(ValueVector target) {
+    return new TransferImpl((LargeListVector) target);
+  }
+
+  @Override
+  public long getValidityBufferAddress() {
+    return (validityBuffer.memoryAddress());
+  }
+
+  @Override
+  public long getDataBufferAddress() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public long getOffsetBufferAddress() {
+    return (offsetBuffer.memoryAddress());
+  }
+
+  @Override
+  public ArrowBuf getValidityBuffer() {
+    return validityBuffer;
+  }
+
+  @Override
+  public ArrowBuf getDataBuffer() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public ArrowBuf getOffsetBuffer() {
+    return offsetBuffer;
+  }
+
+  @Override
+  public int getValueCount() {
+    return valueCount;
+  }
+
+  @Override
+  public int hashCode(int index) {
+    return hashCode(index, null);
+  }
+
+  @Override
+  public int hashCode(int index, ArrowBufHasher hasher) {
+    if (isSet(index) == 0) {
+      return ArrowBufPointer.NULL_HASH_CODE;
+    }
+    int hash = 0;
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    for (long i = start; i < end; i++) {
+      hash = ByteFunctionHelpers.combineHash(hash, vector.hashCode(checkedCastToInt(i), hasher));
+    }
+    return hash;
+  }
+
+  @Override
+  public <OUT, IN> OUT accept(VectorVisitor<OUT, IN> visitor, IN value) {
+    return visitor.visit(this, value);
+  }
+
+  public UnionLargeListWriter getWriter() {
+    return new UnionLargeListWriter(this);
+  }
+
+  protected void replaceDataVector(FieldVector v) {
+    vector.clear();
+    vector = v;
+  }
+
+  @Override
+  public UnionVector promoteToUnion() {
+    UnionVector vector = new UnionVector("$data$", allocator, callBack);
+    replaceDataVector(vector);
+    invalidateReader();
+    if (callBack != null) {
+      callBack.doWork();
+    }
+    return vector;
+  }
+
+  private class TransferImpl implements TransferPair {
+
+    LargeListVector to;
+    TransferPair dataTransferPair;
+
+    public TransferImpl(String name, BufferAllocator allocator, CallBack callBack) {
+      this(new LargeListVector(name, allocator, fieldType, callBack));
+    }
+
+    public TransferImpl(LargeListVector to) {
+      this.to = to;
+      to.addOrGetVector(vector.getField().getFieldType());
+      if (to.getDataVector() instanceof ZeroVector) {
+        to.addOrGetVector(vector.getField().getFieldType());
+      }
+      dataTransferPair = getDataVector().makeTransferPair(to.getDataVector());
+    }
+
+    /**
+     * Transfer this vector'data to another vector. The memory associated
+     * with this vector is transferred to the allocator of target vector
+     * for accounting and management purposes.
+     */
+    @Override
+    public void transfer() {
+      to.clear();
+      dataTransferPair.transfer();
+      to.validityBuffer = transferBuffer(validityBuffer, to.allocator);
+      to.offsetBuffer = transferBuffer(offsetBuffer, to.allocator);
+      to.lastSet = lastSet;
+      if (valueCount > 0) {
+        to.setValueCount(valueCount);
+      }
+      clear();
+    }
+
+    /**
+     * Slice this vector at desired index and length and transfer the
+     * corresponding data to the target vector.
+     * @param startIndex start position of the split in source vector.
+     * @param length length of the split.
+     */
+    @Override
+    public void splitAndTransfer(int startIndex, int length) {
+      Preconditions.checkArgument(startIndex >= 0 && length >= 0 && startIndex + length <= valueCount,
+          "Invalid parameters startIndex: %s, length: %s for valueCount: %s", startIndex, length, valueCount);
+      final long startPoint = offsetBuffer.getLong(startIndex * OFFSET_WIDTH);
+      final long sliceLength = offsetBuffer.getLong((startIndex + length) * OFFSET_WIDTH) - startPoint;
+      to.clear();
+      to.allocateOffsetBuffer((length + 1) * OFFSET_WIDTH);
+      /* splitAndTransfer offset buffer */
+      for (int i = 0; i < length + 1; i++) {
+        final long relativeOffset = offsetBuffer.getLong((startIndex + i) * OFFSET_WIDTH) - startPoint;
+        to.offsetBuffer.setLong(i * OFFSET_WIDTH, relativeOffset);
+      }
+      /* splitAndTransfer validity buffer */
+      splitAndTransferValidityBuffer(startIndex, length, to);
+      /* splitAndTransfer data buffer */
+      dataTransferPair.splitAndTransfer(checkedCastToInt(startPoint), checkedCastToInt(sliceLength));
+      to.lastSet = length - 1;
+      to.setValueCount(length);
+    }
+
+    /*
+     * transfer the validity.
+     */
+    private void splitAndTransferValidityBuffer(int startIndex, int length, LargeListVector target) {
+      int firstByteSource = BitVectorHelper.byteIndex(startIndex);
+      int lastByteSource = BitVectorHelper.byteIndex(valueCount - 1);
+      int byteSizeTarget = getValidityBufferSizeFromCount(length);
+      int offset = startIndex % 8;
+
+      if (length > 0) {
+        if (offset == 0) {
+          // slice
+          if (target.validityBuffer != null) {
+            target.validityBuffer.getReferenceManager().release();
+          }
+          target.validityBuffer = validityBuffer.slice(firstByteSource, byteSizeTarget);
+          target.validityBuffer.getReferenceManager().retain(1);
+        } else {
+          /* Copy data
+           * When the first bit starts from the middle of a byte (offset != 0),
+           * copy data from src BitVector.
+           * Each byte in the target is composed by a part in i-th byte,
+           * another part in (i+1)-th byte.
+           */
+          target.allocateValidityBuffer(byteSizeTarget);
+
+          for (int i = 0; i < byteSizeTarget - 1; i++) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer, firstByteSource + i, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer, firstByteSource + i + 1, offset);
+
+            target.validityBuffer.setByte(i, (b1 + b2));
+          }
+
+          /* Copying the last piece is done in the following manner:
+           * if the source vector has 1 or more bytes remaining, we copy
+           * the last piece as a byte formed by shifting data
+           * from the current byte and the next byte.
+           *
+           * if the source vector has no more bytes remaining
+           * (we are at the last byte), we copy the last piece as a byte
+           * by shifting data from the current byte.
+           */
+          if ((firstByteSource + byteSizeTarget - 1) < lastByteSource) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer,
+                    firstByteSource + byteSizeTarget, offset);
+
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1 + b2);
+          } else {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1);
+          }
+        }
+      }
+    }
+
+    @Override
+    public ValueVector getTo() {
+      return to;
+    }
+
+    @Override
+    public void copyValueSafe(int from, int to) {
+      this.to.copyFrom(from, to, LargeListVector.this);
+    }
+  }
+
+  @Override
+  public UnionLargeListReader getReader() {
+    if (reader == null) {
+      reader = new UnionLargeListReader(this);
+    }
+    return reader;
+  }
+
+  /**
+   * Initialize the data vector (and execute callback) if it hasn't already been done,
+   * returns the data vector.
+   */
+  public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType) {
+    boolean created = false;
+    if (vector instanceof NullVector) {
+      vector = fieldType.createNewSingleVector(defaultDataVectorName, allocator, callBack);
+      // returned vector must have the same field
+      created = true;
+      if (callBack != null &&
+          // not a schema change if changing from ZeroVector to ZeroVector
+          (fieldType.getType().getTypeID() != ArrowType.ArrowTypeID.Null)) {
+        callBack.doWork();
+      }
+    }
+
+    if (vector.getField().getType().getTypeID() != fieldType.getType().getTypeID()) {
+      final String msg = String.format("Inner vector type mismatch. Requested type: [%s], actual type: [%s]",
+          fieldType.getType().getTypeID(), vector.getField().getType().getTypeID());
+      throw new SchemaChangeRuntimeException(msg);
+    }
+
+    invalidateReader();
+    return new AddOrGetResult<>((T) vector, created);
+  }
+
+  /**
+   * Get the size (number of bytes) of underlying buffers used by this
+   * vector.
+   * @return size of underlying buffers.
+   */
+  @Override
+  public int getBufferSize() {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int offsetBufferSize = (valueCount + 1) * OFFSET_WIDTH;
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    return offsetBufferSize + validityBufferSize + vector.getBufferSize();
+  }
+  
+  @Override
+  public int getBufferSizeFor(int valueCount) {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    long innerVectorValueCount = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+
+    return ((valueCount + 1) * OFFSET_WIDTH) +
+        vector.getBufferSizeFor(checkedCastToInt(innerVectorValueCount)) +
+        validityBufferSize;
+  }
+
+  @Override
+  public Field getField() {
+    return new Field(getName(), fieldType, Collections.singletonList(getDataVector().getField()));
+  }
+
+  @Override
+  public MinorType getMinorType() {
+    return MinorType.LIST;
+  }
+
+  @Override
+  public String getName() {
+    return null;
+  }
+
+  @Override
+  public void clear() {
+    offsetBuffer = releaseBuffer(offsetBuffer);
+    vector.clear();
+    valueCount = 0;
+    super.clear();
+    validityBuffer = releaseBuffer(validityBuffer);
+    lastSet = -1;
+  }
+
+  @Override
+  public void reset() {
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+    vector.reset();
+    valueCount = 0;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+    lastSet = -1;
+  }
+
+  /**
+   * Return the underlying buffers associated with this vector. Note that this doesn't
+   * impact the reference counts for this buffer so it only should be used for in-context
+   * access. Also note that this buffer changes regularly thus
+   * external classes shouldn't hold a reference to it (unless they change it).
+   *
+   * @param clear Whether to clear vector before returning; the buffers will still be refcounted
+   *              but the returned array will be the only reference to them
+   * @return The underlying {@link ArrowBuf buffers} that is used by this
+   *         vector instance.
+   */
+  @Override
+  public ArrowBuf[] getBuffers(boolean clear) {
+    setReaderAndWriterIndex();
+    final ArrowBuf[] buffers;
+    if (getBufferSize() == 0) {
+      buffers = new ArrowBuf[0];
+    } else {
+      List<ArrowBuf> list = new ArrayList<>();
+      list.add(offsetBuffer);
+      list.add(validityBuffer);
+      list.addAll(Arrays.asList(vector.getBuffers(false)));
+      buffers = list.toArray(new ArrowBuf[list.size()]);
+    }
+    if (clear) {
+      for (ArrowBuf buffer : buffers) {
+        buffer.getReferenceManager().retain();
+      }
+      clear();
+    }
+    return buffers;
+  }
+
+  protected void invalidateReader() {
+    reader = null;
+  }
+
+  /**
+   * Get the element in the list vector at a particular index.
+   * @param index position of the element
+   * @return Object at given position
+   */
+  @Override
+  public Object getObject(int index) {
+    if (isSet(index) == 0) {
+      return null;
+    }
+    final List<Object> vals = new JsonStringArrayList<>();
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    final ValueVector vv = getDataVector();
+    for (long i = start; i < end; i++) {
+      vals.add(vv.getObject(checkedCastToInt(i)));
+    }
+
+    return vals;
+  }
+
+  /**
+   * Check if element at given index is null.
+   *
+   * @param index position of element
+   * @return true if element at given index is null, false otherwise
+   */
+  @Override
+  public boolean isNull(int index) {
+    return (isSet(index) == 0);
+  }
+
+  /**
+   * Check if element at given index is empty list.
+   * @param index position of element
+   * @return true if element at given index is empty list or NULL, false otherwise
+   */
+  public boolean isEmpty(int index) {
+    if (isNull(index)) {
+      return true;
+    } else {
+      final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+      final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+      return start == end;
+    }
+  }
+
+  /**
+   * Same as {@link #isNull(int)}.
+   *
+   * @param index  position of element
+   * @return 1 if element at given index is not null, 0 otherwise
+   */
+  public int isSet(int index) {
+    final int byteIndex = index >> 3;
+    final byte b = validityBuffer.getByte(byteIndex);
+    final int bitIndex = index & 7;
+    return (b >> bitIndex) & 0x01;
+  }
+
+  /**
+   * Get the number of elements that are null in the vector.
+   *
+   * @return the number of null elements.
+   */
+  @Override
+  public int getNullCount() {
+    return BitVectorHelper.getNullCount(validityBuffer, valueCount);
+  }
+
+  /**
+   * Get the current value capacity for the vector.
+   * @return number of elements that vector can hold.
+   */
+  @Override
+  public int getValueCapacity() {
+    return getValidityAndOffsetValueCapacity();
+  }
+  
+  protected int getOffsetBufferValueCapacity() {
+    return checkedCastToInt(offsetBuffer.capacity() / OFFSET_WIDTH);
+  }
+  
+  private int getValidityAndOffsetValueCapacity() {
+    final int offsetValueCapacity = Math.max(getOffsetBufferValueCapacity() - 1, 0);
+    return Math.min(offsetValueCapacity, getValidityBufferValueCapacity());
+  }
+
+  private int getValidityBufferValueCapacity() {
+    return capAtMaxInt(validityBuffer.capacity() * 8);
+  }
+
+  /**
+   * Sets the list at index to be not-null.  Reallocates validity buffer if index
+   * is larger than current capacity.
+   */
+  public void setNotNull(int index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+  }
+
+  /**
+   * Start a new value in the list vector.
+   *
+   * @param index index of the value to start
+   */
+  public long startNewValue(long index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    for (long i = lastSet + 1; i <= index; i++) {
+      final long currentOffset = offsetBuffer.getLong(i * OFFSET_WIDTH);
+      offsetBuffer.setLong((i + 1) * OFFSET_WIDTH, currentOffset);
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+    return checkedCastToInt(offsetBuffer.getLong((lastSet + 1) * OFFSET_WIDTH));
+  }
+
+  /**
+   * End the current value.
+   *
+   * @param index index of the value to end
+   * @param size  number of elements in the list that was written
+   */
+  public void endValue(int index, int size) {
+    final long currentOffset = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    offsetBuffer.setLong((index + 1) * OFFSET_WIDTH, currentOffset + size);
+  }
+
+  /**
+   * Sets the value count for the vector.
+   *
+   * @param valueCount   value count
+   */
+  @Override
+  public void setValueCount(int valueCount) {
+    this.valueCount = valueCount;
+    if (valueCount > 0) {
+      while (valueCount > getValidityAndOffsetValueCapacity()) {
+        /* check if validity and offset buffers need to be re-allocated */
+        reallocValidityAndOffsetBuffers();
+      }
+      for (long i = lastSet + 1; i < valueCount; i++) {
+        /* fill the holes with offsets */
+        final long currentOffset = offsetBuffer.getLong(i * OFFSET_WIDTH);
+        offsetBuffer.setLong((i + 1) * OFFSET_WIDTH, currentOffset);
+      }
+    }
+    /* valueCount for the data vector is the current end offset */
+    final long childValueCount = (valueCount == 0) ? 0 :
+            offsetBuffer.getLong((lastSet + 1) * OFFSET_WIDTH);
+    /* set the value count of data vector and this will take care of
+     * checking whether data buffer needs to be reallocated.
+     */
+    vector.setValueCount(checkedCastToInt(childValueCount));
+  }
+
+  public void setLastSet(int value) {
+    lastSet = value;
+  }
+
+  public long getLastSet() {

Review comment:
       return `int`

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;

Review comment:
       I don't think this should be a long, it's the index of the last element set right?

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/BitVectorHelper.java
##########
@@ -57,12 +71,12 @@ public static int bitIndex(int absoluteBitIndex) {
    * @param validityBuffer validity buffer of the vector
    * @param index index to be set
    */
-  public static void setBit(ArrowBuf validityBuffer, int index) {
+  public static void setBit(ArrowBuf validityBuffer, long index) {
     // it can be observed that some logic is duplicate of the logic in setValidityBit.
     // this is because JIT cannot always remove the if branch in setValidityBit,
     // so we give a dedicated implementation for setting bits.
-    final int byteIndex = byteIndex(index);
-    final int bitIndex = bitIndex(index);
+    final long byteIndex = byteIndex(index);
+    final long bitIndex = bitIndex(index);

Review comment:
       From the comment above, I think this should still be an `int`

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;

Review comment:
       shouldn't this be long?

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {
+    final long currentBufferCapacity = offsetBuffer.capacity();
+    long baseSize = offsetAllocationSizeInBytes;
+
+    if (baseSize < currentBufferCapacity) {
+      baseSize = currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    newAllocationSize = Math.min(newAllocationSize, (long) (OFFSET_WIDTH) * Integer.MAX_VALUE);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE || newAllocationSize <= baseSize) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer(newAllocationSize);
+    newBuf.setBytes(0, offsetBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    offsetBuffer.getReferenceManager().release(1);
+    offsetBuffer = newBuf;
+    offsetAllocationSizeInBytes = newAllocationSize;
+  }
+  
+  private void reallocValidityBuffer() {

Review comment:
       same comment as above

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {
+    final long currentBufferCapacity = offsetBuffer.capacity();
+    long baseSize = offsetAllocationSizeInBytes;
+
+    if (baseSize < currentBufferCapacity) {
+      baseSize = currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    newAllocationSize = Math.min(newAllocationSize, (long) (OFFSET_WIDTH) * Integer.MAX_VALUE);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE || newAllocationSize <= baseSize) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer(newAllocationSize);
+    newBuf.setBytes(0, offsetBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    offsetBuffer.getReferenceManager().release(1);
+    offsetBuffer = newBuf;
+    offsetAllocationSizeInBytes = newAllocationSize;
+  }
+  
+  private void reallocValidityBuffer() {
+    final int currentBufferCapacity = checkedCastToInt(validityBuffer.capacity());
+    long baseSize = validityAllocationSizeInBytes;
+
+    if (baseSize < (long) currentBufferCapacity) {
+      baseSize = (long) currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer((int) newAllocationSize);
+    newBuf.setBytes(0, validityBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    validityBuffer.getReferenceManager().release(1);
+    validityBuffer = newBuf;
+    validityAllocationSizeInBytes = (int) newAllocationSize;
+  }
+
+  /**
+   * Same as {@link #copyFrom(int, int, ValueVector)} except that
+   * it handles the case when the capacity of the vector needs to be expanded
+   * before copy.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFromSafe(int inIndex, int outIndex, ValueVector from) {
+    copyFrom(inIndex, outIndex, from);
+  }
+
+  /**
+   * Copy a cell value from a particular index in source vector to a particular
+   * position in this vector.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFrom(int inIndex, int outIndex, ValueVector from) {
+    Preconditions.checkArgument(this.getMinorType() == from.getMinorType());
+    FieldReader in = from.getReader();
+    in.setPosition(inIndex);
+    UnionLargeListWriter out = getWriter();
+    out.setIndex(outIndex);
+    ComplexCopier.copy(in, out);
+  }
+
+  @Override
+  public UInt4Vector getOffsetVector() {
+    return null;
+  }
+
+  /**
+   * Get the inner data vector for this list vector.
+   * @return data vector
+   */
+  @Override
+  public FieldVector getDataVector() {
+    return vector;
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator) {
+    return getTransferPair(ref, allocator, null);
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator, CallBack callBack) {
+    return new TransferImpl(ref, allocator, callBack);
+  }
+
+  @Override
+  public TransferPair makeTransferPair(ValueVector target) {
+    return new TransferImpl((LargeListVector) target);
+  }
+
+  @Override
+  public long getValidityBufferAddress() {
+    return (validityBuffer.memoryAddress());
+  }
+
+  @Override
+  public long getDataBufferAddress() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public long getOffsetBufferAddress() {
+    return (offsetBuffer.memoryAddress());
+  }
+
+  @Override
+  public ArrowBuf getValidityBuffer() {
+    return validityBuffer;
+  }
+
+  @Override
+  public ArrowBuf getDataBuffer() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public ArrowBuf getOffsetBuffer() {
+    return offsetBuffer;
+  }
+
+  @Override
+  public int getValueCount() {
+    return valueCount;
+  }
+
+  @Override
+  public int hashCode(int index) {
+    return hashCode(index, null);
+  }
+
+  @Override
+  public int hashCode(int index, ArrowBufHasher hasher) {
+    if (isSet(index) == 0) {
+      return ArrowBufPointer.NULL_HASH_CODE;
+    }
+    int hash = 0;
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    for (long i = start; i < end; i++) {
+      hash = ByteFunctionHelpers.combineHash(hash, vector.hashCode(checkedCastToInt(i), hasher));
+    }
+    return hash;
+  }
+
+  @Override
+  public <OUT, IN> OUT accept(VectorVisitor<OUT, IN> visitor, IN value) {
+    return visitor.visit(this, value);
+  }
+
+  public UnionLargeListWriter getWriter() {
+    return new UnionLargeListWriter(this);
+  }
+
+  protected void replaceDataVector(FieldVector v) {
+    vector.clear();
+    vector = v;
+  }
+
+  @Override
+  public UnionVector promoteToUnion() {
+    UnionVector vector = new UnionVector("$data$", allocator, callBack);
+    replaceDataVector(vector);
+    invalidateReader();
+    if (callBack != null) {
+      callBack.doWork();
+    }
+    return vector;
+  }
+
+  private class TransferImpl implements TransferPair {
+
+    LargeListVector to;
+    TransferPair dataTransferPair;
+
+    public TransferImpl(String name, BufferAllocator allocator, CallBack callBack) {
+      this(new LargeListVector(name, allocator, fieldType, callBack));
+    }
+
+    public TransferImpl(LargeListVector to) {
+      this.to = to;
+      to.addOrGetVector(vector.getField().getFieldType());
+      if (to.getDataVector() instanceof ZeroVector) {
+        to.addOrGetVector(vector.getField().getFieldType());
+      }
+      dataTransferPair = getDataVector().makeTransferPair(to.getDataVector());
+    }
+
+    /**
+     * Transfer this vector'data to another vector. The memory associated
+     * with this vector is transferred to the allocator of target vector
+     * for accounting and management purposes.
+     */
+    @Override
+    public void transfer() {
+      to.clear();
+      dataTransferPair.transfer();
+      to.validityBuffer = transferBuffer(validityBuffer, to.allocator);
+      to.offsetBuffer = transferBuffer(offsetBuffer, to.allocator);
+      to.lastSet = lastSet;
+      if (valueCount > 0) {
+        to.setValueCount(valueCount);
+      }
+      clear();
+    }
+
+    /**
+     * Slice this vector at desired index and length and transfer the
+     * corresponding data to the target vector.
+     * @param startIndex start position of the split in source vector.
+     * @param length length of the split.
+     */
+    @Override
+    public void splitAndTransfer(int startIndex, int length) {
+      Preconditions.checkArgument(startIndex >= 0 && length >= 0 && startIndex + length <= valueCount,
+          "Invalid parameters startIndex: %s, length: %s for valueCount: %s", startIndex, length, valueCount);
+      final long startPoint = offsetBuffer.getLong(startIndex * OFFSET_WIDTH);
+      final long sliceLength = offsetBuffer.getLong((startIndex + length) * OFFSET_WIDTH) - startPoint;
+      to.clear();
+      to.allocateOffsetBuffer((length + 1) * OFFSET_WIDTH);
+      /* splitAndTransfer offset buffer */
+      for (int i = 0; i < length + 1; i++) {
+        final long relativeOffset = offsetBuffer.getLong((startIndex + i) * OFFSET_WIDTH) - startPoint;
+        to.offsetBuffer.setLong(i * OFFSET_WIDTH, relativeOffset);
+      }
+      /* splitAndTransfer validity buffer */
+      splitAndTransferValidityBuffer(startIndex, length, to);
+      /* splitAndTransfer data buffer */
+      dataTransferPair.splitAndTransfer(checkedCastToInt(startPoint), checkedCastToInt(sliceLength));
+      to.lastSet = length - 1;
+      to.setValueCount(length);
+    }
+
+    /*
+     * transfer the validity.
+     */
+    private void splitAndTransferValidityBuffer(int startIndex, int length, LargeListVector target) {
+      int firstByteSource = BitVectorHelper.byteIndex(startIndex);
+      int lastByteSource = BitVectorHelper.byteIndex(valueCount - 1);
+      int byteSizeTarget = getValidityBufferSizeFromCount(length);
+      int offset = startIndex % 8;
+
+      if (length > 0) {
+        if (offset == 0) {
+          // slice
+          if (target.validityBuffer != null) {
+            target.validityBuffer.getReferenceManager().release();
+          }
+          target.validityBuffer = validityBuffer.slice(firstByteSource, byteSizeTarget);
+          target.validityBuffer.getReferenceManager().retain(1);
+        } else {
+          /* Copy data
+           * When the first bit starts from the middle of a byte (offset != 0),
+           * copy data from src BitVector.
+           * Each byte in the target is composed by a part in i-th byte,
+           * another part in (i+1)-th byte.
+           */
+          target.allocateValidityBuffer(byteSizeTarget);
+
+          for (int i = 0; i < byteSizeTarget - 1; i++) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer, firstByteSource + i, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer, firstByteSource + i + 1, offset);
+
+            target.validityBuffer.setByte(i, (b1 + b2));
+          }
+
+          /* Copying the last piece is done in the following manner:
+           * if the source vector has 1 or more bytes remaining, we copy
+           * the last piece as a byte formed by shifting data
+           * from the current byte and the next byte.
+           *
+           * if the source vector has no more bytes remaining
+           * (we are at the last byte), we copy the last piece as a byte
+           * by shifting data from the current byte.
+           */
+          if ((firstByteSource + byteSizeTarget - 1) < lastByteSource) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer,
+                    firstByteSource + byteSizeTarget, offset);
+
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1 + b2);
+          } else {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1);
+          }
+        }
+      }
+    }
+
+    @Override
+    public ValueVector getTo() {
+      return to;
+    }
+
+    @Override
+    public void copyValueSafe(int from, int to) {
+      this.to.copyFrom(from, to, LargeListVector.this);
+    }
+  }
+
+  @Override
+  public UnionLargeListReader getReader() {
+    if (reader == null) {
+      reader = new UnionLargeListReader(this);
+    }
+    return reader;
+  }
+
+  /**
+   * Initialize the data vector (and execute callback) if it hasn't already been done,
+   * returns the data vector.
+   */
+  public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType) {
+    boolean created = false;
+    if (vector instanceof NullVector) {
+      vector = fieldType.createNewSingleVector(defaultDataVectorName, allocator, callBack);
+      // returned vector must have the same field
+      created = true;
+      if (callBack != null &&
+          // not a schema change if changing from ZeroVector to ZeroVector
+          (fieldType.getType().getTypeID() != ArrowType.ArrowTypeID.Null)) {
+        callBack.doWork();
+      }
+    }
+
+    if (vector.getField().getType().getTypeID() != fieldType.getType().getTypeID()) {
+      final String msg = String.format("Inner vector type mismatch. Requested type: [%s], actual type: [%s]",
+          fieldType.getType().getTypeID(), vector.getField().getType().getTypeID());
+      throw new SchemaChangeRuntimeException(msg);
+    }
+
+    invalidateReader();
+    return new AddOrGetResult<>((T) vector, created);
+  }
+
+  /**
+   * Get the size (number of bytes) of underlying buffers used by this
+   * vector.
+   * @return size of underlying buffers.
+   */
+  @Override
+  public int getBufferSize() {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int offsetBufferSize = (valueCount + 1) * OFFSET_WIDTH;
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    return offsetBufferSize + validityBufferSize + vector.getBufferSize();
+  }
+  
+  @Override
+  public int getBufferSizeFor(int valueCount) {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    long innerVectorValueCount = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+
+    return ((valueCount + 1) * OFFSET_WIDTH) +
+        vector.getBufferSizeFor(checkedCastToInt(innerVectorValueCount)) +
+        validityBufferSize;
+  }
+
+  @Override
+  public Field getField() {
+    return new Field(getName(), fieldType, Collections.singletonList(getDataVector().getField()));
+  }
+
+  @Override
+  public MinorType getMinorType() {
+    return MinorType.LIST;
+  }
+
+  @Override
+  public String getName() {
+    return null;
+  }
+
+  @Override
+  public void clear() {
+    offsetBuffer = releaseBuffer(offsetBuffer);
+    vector.clear();
+    valueCount = 0;
+    super.clear();
+    validityBuffer = releaseBuffer(validityBuffer);
+    lastSet = -1;
+  }
+
+  @Override
+  public void reset() {
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+    vector.reset();
+    valueCount = 0;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+    lastSet = -1;
+  }
+
+  /**
+   * Return the underlying buffers associated with this vector. Note that this doesn't
+   * impact the reference counts for this buffer so it only should be used for in-context
+   * access. Also note that this buffer changes regularly thus
+   * external classes shouldn't hold a reference to it (unless they change it).
+   *
+   * @param clear Whether to clear vector before returning; the buffers will still be refcounted
+   *              but the returned array will be the only reference to them
+   * @return The underlying {@link ArrowBuf buffers} that is used by this
+   *         vector instance.
+   */
+  @Override
+  public ArrowBuf[] getBuffers(boolean clear) {
+    setReaderAndWriterIndex();
+    final ArrowBuf[] buffers;
+    if (getBufferSize() == 0) {
+      buffers = new ArrowBuf[0];
+    } else {
+      List<ArrowBuf> list = new ArrayList<>();
+      list.add(offsetBuffer);
+      list.add(validityBuffer);
+      list.addAll(Arrays.asList(vector.getBuffers(false)));
+      buffers = list.toArray(new ArrowBuf[list.size()]);
+    }
+    if (clear) {
+      for (ArrowBuf buffer : buffers) {
+        buffer.getReferenceManager().retain();
+      }
+      clear();
+    }
+    return buffers;
+  }
+
+  protected void invalidateReader() {
+    reader = null;
+  }
+
+  /**
+   * Get the element in the list vector at a particular index.
+   * @param index position of the element
+   * @return Object at given position
+   */
+  @Override
+  public Object getObject(int index) {
+    if (isSet(index) == 0) {
+      return null;
+    }
+    final List<Object> vals = new JsonStringArrayList<>();
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    final ValueVector vv = getDataVector();
+    for (long i = start; i < end; i++) {
+      vals.add(vv.getObject(checkedCastToInt(i)));
+    }
+
+    return vals;
+  }
+
+  /**
+   * Check if element at given index is null.
+   *
+   * @param index position of element
+   * @return true if element at given index is null, false otherwise
+   */
+  @Override
+  public boolean isNull(int index) {
+    return (isSet(index) == 0);
+  }
+
+  /**
+   * Check if element at given index is empty list.
+   * @param index position of element
+   * @return true if element at given index is empty list or NULL, false otherwise
+   */
+  public boolean isEmpty(int index) {
+    if (isNull(index)) {
+      return true;
+    } else {
+      final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+      final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+      return start == end;
+    }
+  }
+
+  /**
+   * Same as {@link #isNull(int)}.
+   *
+   * @param index  position of element
+   * @return 1 if element at given index is not null, 0 otherwise
+   */
+  public int isSet(int index) {
+    final int byteIndex = index >> 3;
+    final byte b = validityBuffer.getByte(byteIndex);
+    final int bitIndex = index & 7;
+    return (b >> bitIndex) & 0x01;
+  }
+
+  /**
+   * Get the number of elements that are null in the vector.
+   *
+   * @return the number of null elements.
+   */
+  @Override
+  public int getNullCount() {
+    return BitVectorHelper.getNullCount(validityBuffer, valueCount);
+  }
+
+  /**
+   * Get the current value capacity for the vector.
+   * @return number of elements that vector can hold.
+   */
+  @Override
+  public int getValueCapacity() {
+    return getValidityAndOffsetValueCapacity();
+  }
+  
+  protected int getOffsetBufferValueCapacity() {
+    return checkedCastToInt(offsetBuffer.capacity() / OFFSET_WIDTH);
+  }
+  
+  private int getValidityAndOffsetValueCapacity() {
+    final int offsetValueCapacity = Math.max(getOffsetBufferValueCapacity() - 1, 0);
+    return Math.min(offsetValueCapacity, getValidityBufferValueCapacity());
+  }
+
+  private int getValidityBufferValueCapacity() {
+    return capAtMaxInt(validityBuffer.capacity() * 8);
+  }
+
+  /**
+   * Sets the list at index to be not-null.  Reallocates validity buffer if index
+   * is larger than current capacity.
+   */
+  public void setNotNull(int index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+  }
+
+  /**
+   * Start a new value in the list vector.
+   *
+   * @param index index of the value to start
+   */
+  public long startNewValue(long index) {

Review comment:
       `index` should be `int` I believe

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {
+    final long currentBufferCapacity = offsetBuffer.capacity();
+    long baseSize = offsetAllocationSizeInBytes;
+
+    if (baseSize < currentBufferCapacity) {
+      baseSize = currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    newAllocationSize = Math.min(newAllocationSize, (long) (OFFSET_WIDTH) * Integer.MAX_VALUE);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE || newAllocationSize <= baseSize) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer(newAllocationSize);
+    newBuf.setBytes(0, offsetBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    offsetBuffer.getReferenceManager().release(1);
+    offsetBuffer = newBuf;
+    offsetAllocationSizeInBytes = newAllocationSize;
+  }
+  
+  private void reallocValidityBuffer() {
+    final int currentBufferCapacity = checkedCastToInt(validityBuffer.capacity());
+    long baseSize = validityAllocationSizeInBytes;
+
+    if (baseSize < (long) currentBufferCapacity) {
+      baseSize = (long) currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer((int) newAllocationSize);
+    newBuf.setBytes(0, validityBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    validityBuffer.getReferenceManager().release(1);
+    validityBuffer = newBuf;
+    validityAllocationSizeInBytes = (int) newAllocationSize;
+  }
+
+  /**
+   * Same as {@link #copyFrom(int, int, ValueVector)} except that
+   * it handles the case when the capacity of the vector needs to be expanded
+   * before copy.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFromSafe(int inIndex, int outIndex, ValueVector from) {
+    copyFrom(inIndex, outIndex, from);
+  }
+
+  /**
+   * Copy a cell value from a particular index in source vector to a particular
+   * position in this vector.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFrom(int inIndex, int outIndex, ValueVector from) {
+    Preconditions.checkArgument(this.getMinorType() == from.getMinorType());
+    FieldReader in = from.getReader();
+    in.setPosition(inIndex);
+    UnionLargeListWriter out = getWriter();
+    out.setIndex(outIndex);
+    ComplexCopier.copy(in, out);
+  }
+
+  @Override
+  public UInt4Vector getOffsetVector() {
+    return null;
+  }
+
+  /**
+   * Get the inner data vector for this list vector.
+   * @return data vector
+   */
+  @Override
+  public FieldVector getDataVector() {
+    return vector;
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator) {
+    return getTransferPair(ref, allocator, null);
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator, CallBack callBack) {
+    return new TransferImpl(ref, allocator, callBack);
+  }
+
+  @Override
+  public TransferPair makeTransferPair(ValueVector target) {
+    return new TransferImpl((LargeListVector) target);
+  }
+
+  @Override
+  public long getValidityBufferAddress() {
+    return (validityBuffer.memoryAddress());
+  }
+
+  @Override
+  public long getDataBufferAddress() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public long getOffsetBufferAddress() {
+    return (offsetBuffer.memoryAddress());
+  }
+
+  @Override
+  public ArrowBuf getValidityBuffer() {
+    return validityBuffer;
+  }
+
+  @Override
+  public ArrowBuf getDataBuffer() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public ArrowBuf getOffsetBuffer() {
+    return offsetBuffer;
+  }
+
+  @Override
+  public int getValueCount() {
+    return valueCount;
+  }
+
+  @Override
+  public int hashCode(int index) {
+    return hashCode(index, null);
+  }
+
+  @Override
+  public int hashCode(int index, ArrowBufHasher hasher) {
+    if (isSet(index) == 0) {
+      return ArrowBufPointer.NULL_HASH_CODE;
+    }
+    int hash = 0;
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    for (long i = start; i < end; i++) {
+      hash = ByteFunctionHelpers.combineHash(hash, vector.hashCode(checkedCastToInt(i), hasher));
+    }
+    return hash;
+  }
+
+  @Override
+  public <OUT, IN> OUT accept(VectorVisitor<OUT, IN> visitor, IN value) {
+    return visitor.visit(this, value);
+  }
+
+  public UnionLargeListWriter getWriter() {
+    return new UnionLargeListWriter(this);
+  }
+
+  protected void replaceDataVector(FieldVector v) {
+    vector.clear();
+    vector = v;
+  }
+
+  @Override
+  public UnionVector promoteToUnion() {
+    UnionVector vector = new UnionVector("$data$", allocator, callBack);
+    replaceDataVector(vector);
+    invalidateReader();
+    if (callBack != null) {
+      callBack.doWork();
+    }
+    return vector;
+  }
+
+  private class TransferImpl implements TransferPair {
+
+    LargeListVector to;
+    TransferPair dataTransferPair;
+
+    public TransferImpl(String name, BufferAllocator allocator, CallBack callBack) {
+      this(new LargeListVector(name, allocator, fieldType, callBack));
+    }
+
+    public TransferImpl(LargeListVector to) {
+      this.to = to;
+      to.addOrGetVector(vector.getField().getFieldType());
+      if (to.getDataVector() instanceof ZeroVector) {
+        to.addOrGetVector(vector.getField().getFieldType());
+      }
+      dataTransferPair = getDataVector().makeTransferPair(to.getDataVector());
+    }
+
+    /**
+     * Transfer this vector'data to another vector. The memory associated
+     * with this vector is transferred to the allocator of target vector
+     * for accounting and management purposes.
+     */
+    @Override
+    public void transfer() {
+      to.clear();
+      dataTransferPair.transfer();
+      to.validityBuffer = transferBuffer(validityBuffer, to.allocator);
+      to.offsetBuffer = transferBuffer(offsetBuffer, to.allocator);
+      to.lastSet = lastSet;
+      if (valueCount > 0) {
+        to.setValueCount(valueCount);
+      }
+      clear();
+    }
+
+    /**
+     * Slice this vector at desired index and length and transfer the
+     * corresponding data to the target vector.
+     * @param startIndex start position of the split in source vector.
+     * @param length length of the split.
+     */
+    @Override
+    public void splitAndTransfer(int startIndex, int length) {
+      Preconditions.checkArgument(startIndex >= 0 && length >= 0 && startIndex + length <= valueCount,
+          "Invalid parameters startIndex: %s, length: %s for valueCount: %s", startIndex, length, valueCount);
+      final long startPoint = offsetBuffer.getLong(startIndex * OFFSET_WIDTH);
+      final long sliceLength = offsetBuffer.getLong((startIndex + length) * OFFSET_WIDTH) - startPoint;
+      to.clear();
+      to.allocateOffsetBuffer((length + 1) * OFFSET_WIDTH);
+      /* splitAndTransfer offset buffer */
+      for (int i = 0; i < length + 1; i++) {
+        final long relativeOffset = offsetBuffer.getLong((startIndex + i) * OFFSET_WIDTH) - startPoint;
+        to.offsetBuffer.setLong(i * OFFSET_WIDTH, relativeOffset);
+      }
+      /* splitAndTransfer validity buffer */
+      splitAndTransferValidityBuffer(startIndex, length, to);
+      /* splitAndTransfer data buffer */
+      dataTransferPair.splitAndTransfer(checkedCastToInt(startPoint), checkedCastToInt(sliceLength));
+      to.lastSet = length - 1;
+      to.setValueCount(length);
+    }
+
+    /*
+     * transfer the validity.
+     */
+    private void splitAndTransferValidityBuffer(int startIndex, int length, LargeListVector target) {
+      int firstByteSource = BitVectorHelper.byteIndex(startIndex);
+      int lastByteSource = BitVectorHelper.byteIndex(valueCount - 1);
+      int byteSizeTarget = getValidityBufferSizeFromCount(length);
+      int offset = startIndex % 8;
+
+      if (length > 0) {
+        if (offset == 0) {
+          // slice
+          if (target.validityBuffer != null) {
+            target.validityBuffer.getReferenceManager().release();
+          }
+          target.validityBuffer = validityBuffer.slice(firstByteSource, byteSizeTarget);
+          target.validityBuffer.getReferenceManager().retain(1);
+        } else {
+          /* Copy data
+           * When the first bit starts from the middle of a byte (offset != 0),
+           * copy data from src BitVector.
+           * Each byte in the target is composed by a part in i-th byte,
+           * another part in (i+1)-th byte.
+           */
+          target.allocateValidityBuffer(byteSizeTarget);
+
+          for (int i = 0; i < byteSizeTarget - 1; i++) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer, firstByteSource + i, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer, firstByteSource + i + 1, offset);
+
+            target.validityBuffer.setByte(i, (b1 + b2));
+          }
+
+          /* Copying the last piece is done in the following manner:
+           * if the source vector has 1 or more bytes remaining, we copy
+           * the last piece as a byte formed by shifting data
+           * from the current byte and the next byte.
+           *
+           * if the source vector has no more bytes remaining
+           * (we are at the last byte), we copy the last piece as a byte
+           * by shifting data from the current byte.
+           */
+          if ((firstByteSource + byteSizeTarget - 1) < lastByteSource) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer,
+                    firstByteSource + byteSizeTarget, offset);
+
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1 + b2);
+          } else {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1);
+          }
+        }
+      }
+    }
+
+    @Override
+    public ValueVector getTo() {
+      return to;
+    }
+
+    @Override
+    public void copyValueSafe(int from, int to) {
+      this.to.copyFrom(from, to, LargeListVector.this);
+    }
+  }
+
+  @Override
+  public UnionLargeListReader getReader() {
+    if (reader == null) {
+      reader = new UnionLargeListReader(this);
+    }
+    return reader;
+  }
+
+  /**
+   * Initialize the data vector (and execute callback) if it hasn't already been done,
+   * returns the data vector.
+   */
+  public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType) {
+    boolean created = false;
+    if (vector instanceof NullVector) {
+      vector = fieldType.createNewSingleVector(defaultDataVectorName, allocator, callBack);
+      // returned vector must have the same field
+      created = true;
+      if (callBack != null &&
+          // not a schema change if changing from ZeroVector to ZeroVector
+          (fieldType.getType().getTypeID() != ArrowType.ArrowTypeID.Null)) {
+        callBack.doWork();
+      }
+    }
+
+    if (vector.getField().getType().getTypeID() != fieldType.getType().getTypeID()) {
+      final String msg = String.format("Inner vector type mismatch. Requested type: [%s], actual type: [%s]",
+          fieldType.getType().getTypeID(), vector.getField().getType().getTypeID());
+      throw new SchemaChangeRuntimeException(msg);
+    }
+
+    invalidateReader();
+    return new AddOrGetResult<>((T) vector, created);
+  }
+
+  /**
+   * Get the size (number of bytes) of underlying buffers used by this
+   * vector.
+   * @return size of underlying buffers.
+   */
+  @Override
+  public int getBufferSize() {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int offsetBufferSize = (valueCount + 1) * OFFSET_WIDTH;
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    return offsetBufferSize + validityBufferSize + vector.getBufferSize();
+  }
+  
+  @Override
+  public int getBufferSizeFor(int valueCount) {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    long innerVectorValueCount = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+
+    return ((valueCount + 1) * OFFSET_WIDTH) +
+        vector.getBufferSizeFor(checkedCastToInt(innerVectorValueCount)) +
+        validityBufferSize;
+  }
+
+  @Override
+  public Field getField() {
+    return new Field(getName(), fieldType, Collections.singletonList(getDataVector().getField()));
+  }
+
+  @Override
+  public MinorType getMinorType() {
+    return MinorType.LIST;
+  }
+
+  @Override
+  public String getName() {
+    return null;

Review comment:
       shouldn't this return a name?

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/ipc/JsonFileReader.java
##########
@@ -564,8 +564,10 @@ private ArrowBuf readIntoBuffer(BufferAllocator allocator, BufferType bufferType
     } else if (bufferType.equals(OFFSET)) {
       if (type == Types.MinorType.LARGEVARCHAR || type == Types.MinorType.LARGEVARBINARY) {

Review comment:
       you also won't need `typeBitWidth` as an arg

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {
+    final long currentBufferCapacity = offsetBuffer.capacity();
+    long baseSize = offsetAllocationSizeInBytes;
+
+    if (baseSize < currentBufferCapacity) {
+      baseSize = currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    newAllocationSize = Math.min(newAllocationSize, (long) (OFFSET_WIDTH) * Integer.MAX_VALUE);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE || newAllocationSize <= baseSize) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer(newAllocationSize);
+    newBuf.setBytes(0, offsetBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    offsetBuffer.getReferenceManager().release(1);
+    offsetBuffer = newBuf;
+    offsetAllocationSizeInBytes = newAllocationSize;
+  }
+  
+  private void reallocValidityBuffer() {
+    final int currentBufferCapacity = checkedCastToInt(validityBuffer.capacity());
+    long baseSize = validityAllocationSizeInBytes;
+
+    if (baseSize < (long) currentBufferCapacity) {
+      baseSize = (long) currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer((int) newAllocationSize);
+    newBuf.setBytes(0, validityBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    validityBuffer.getReferenceManager().release(1);
+    validityBuffer = newBuf;
+    validityAllocationSizeInBytes = (int) newAllocationSize;
+  }
+
+  /**
+   * Same as {@link #copyFrom(int, int, ValueVector)} except that
+   * it handles the case when the capacity of the vector needs to be expanded
+   * before copy.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFromSafe(int inIndex, int outIndex, ValueVector from) {
+    copyFrom(inIndex, outIndex, from);
+  }
+
+  /**
+   * Copy a cell value from a particular index in source vector to a particular
+   * position in this vector.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFrom(int inIndex, int outIndex, ValueVector from) {
+    Preconditions.checkArgument(this.getMinorType() == from.getMinorType());
+    FieldReader in = from.getReader();
+    in.setPosition(inIndex);
+    UnionLargeListWriter out = getWriter();
+    out.setIndex(outIndex);
+    ComplexCopier.copy(in, out);
+  }
+
+  @Override
+  public UInt4Vector getOffsetVector() {
+    return null;
+  }
+
+  /**
+   * Get the inner data vector for this list vector.
+   * @return data vector
+   */
+  @Override
+  public FieldVector getDataVector() {
+    return vector;
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator) {
+    return getTransferPair(ref, allocator, null);
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator, CallBack callBack) {
+    return new TransferImpl(ref, allocator, callBack);
+  }
+
+  @Override
+  public TransferPair makeTransferPair(ValueVector target) {
+    return new TransferImpl((LargeListVector) target);
+  }
+
+  @Override
+  public long getValidityBufferAddress() {
+    return (validityBuffer.memoryAddress());
+  }
+
+  @Override
+  public long getDataBufferAddress() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public long getOffsetBufferAddress() {
+    return (offsetBuffer.memoryAddress());
+  }
+
+  @Override
+  public ArrowBuf getValidityBuffer() {
+    return validityBuffer;
+  }
+
+  @Override
+  public ArrowBuf getDataBuffer() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public ArrowBuf getOffsetBuffer() {
+    return offsetBuffer;
+  }
+
+  @Override
+  public int getValueCount() {
+    return valueCount;
+  }
+
+  @Override
+  public int hashCode(int index) {
+    return hashCode(index, null);
+  }
+
+  @Override
+  public int hashCode(int index, ArrowBufHasher hasher) {
+    if (isSet(index) == 0) {
+      return ArrowBufPointer.NULL_HASH_CODE;
+    }
+    int hash = 0;
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    for (long i = start; i < end; i++) {
+      hash = ByteFunctionHelpers.combineHash(hash, vector.hashCode(checkedCastToInt(i), hasher));
+    }
+    return hash;
+  }
+
+  @Override
+  public <OUT, IN> OUT accept(VectorVisitor<OUT, IN> visitor, IN value) {
+    return visitor.visit(this, value);
+  }
+
+  public UnionLargeListWriter getWriter() {
+    return new UnionLargeListWriter(this);
+  }
+
+  protected void replaceDataVector(FieldVector v) {
+    vector.clear();
+    vector = v;
+  }
+
+  @Override
+  public UnionVector promoteToUnion() {
+    UnionVector vector = new UnionVector("$data$", allocator, callBack);
+    replaceDataVector(vector);
+    invalidateReader();
+    if (callBack != null) {
+      callBack.doWork();
+    }
+    return vector;
+  }
+
+  private class TransferImpl implements TransferPair {
+
+    LargeListVector to;
+    TransferPair dataTransferPair;
+
+    public TransferImpl(String name, BufferAllocator allocator, CallBack callBack) {
+      this(new LargeListVector(name, allocator, fieldType, callBack));
+    }
+
+    public TransferImpl(LargeListVector to) {
+      this.to = to;
+      to.addOrGetVector(vector.getField().getFieldType());
+      if (to.getDataVector() instanceof ZeroVector) {
+        to.addOrGetVector(vector.getField().getFieldType());
+      }
+      dataTransferPair = getDataVector().makeTransferPair(to.getDataVector());
+    }
+
+    /**
+     * Transfer this vector'data to another vector. The memory associated
+     * with this vector is transferred to the allocator of target vector
+     * for accounting and management purposes.
+     */
+    @Override
+    public void transfer() {
+      to.clear();
+      dataTransferPair.transfer();
+      to.validityBuffer = transferBuffer(validityBuffer, to.allocator);
+      to.offsetBuffer = transferBuffer(offsetBuffer, to.allocator);
+      to.lastSet = lastSet;
+      if (valueCount > 0) {
+        to.setValueCount(valueCount);
+      }
+      clear();
+    }
+
+    /**
+     * Slice this vector at desired index and length and transfer the
+     * corresponding data to the target vector.
+     * @param startIndex start position of the split in source vector.
+     * @param length length of the split.
+     */
+    @Override
+    public void splitAndTransfer(int startIndex, int length) {
+      Preconditions.checkArgument(startIndex >= 0 && length >= 0 && startIndex + length <= valueCount,
+          "Invalid parameters startIndex: %s, length: %s for valueCount: %s", startIndex, length, valueCount);
+      final long startPoint = offsetBuffer.getLong(startIndex * OFFSET_WIDTH);
+      final long sliceLength = offsetBuffer.getLong((startIndex + length) * OFFSET_WIDTH) - startPoint;
+      to.clear();
+      to.allocateOffsetBuffer((length + 1) * OFFSET_WIDTH);
+      /* splitAndTransfer offset buffer */
+      for (int i = 0; i < length + 1; i++) {
+        final long relativeOffset = offsetBuffer.getLong((startIndex + i) * OFFSET_WIDTH) - startPoint;
+        to.offsetBuffer.setLong(i * OFFSET_WIDTH, relativeOffset);
+      }
+      /* splitAndTransfer validity buffer */
+      splitAndTransferValidityBuffer(startIndex, length, to);
+      /* splitAndTransfer data buffer */
+      dataTransferPair.splitAndTransfer(checkedCastToInt(startPoint), checkedCastToInt(sliceLength));
+      to.lastSet = length - 1;
+      to.setValueCount(length);
+    }
+
+    /*
+     * transfer the validity.
+     */
+    private void splitAndTransferValidityBuffer(int startIndex, int length, LargeListVector target) {
+      int firstByteSource = BitVectorHelper.byteIndex(startIndex);
+      int lastByteSource = BitVectorHelper.byteIndex(valueCount - 1);
+      int byteSizeTarget = getValidityBufferSizeFromCount(length);
+      int offset = startIndex % 8;
+
+      if (length > 0) {
+        if (offset == 0) {
+          // slice
+          if (target.validityBuffer != null) {
+            target.validityBuffer.getReferenceManager().release();
+          }
+          target.validityBuffer = validityBuffer.slice(firstByteSource, byteSizeTarget);
+          target.validityBuffer.getReferenceManager().retain(1);
+        } else {
+          /* Copy data
+           * When the first bit starts from the middle of a byte (offset != 0),
+           * copy data from src BitVector.
+           * Each byte in the target is composed by a part in i-th byte,
+           * another part in (i+1)-th byte.
+           */
+          target.allocateValidityBuffer(byteSizeTarget);
+
+          for (int i = 0; i < byteSizeTarget - 1; i++) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer, firstByteSource + i, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer, firstByteSource + i + 1, offset);
+
+            target.validityBuffer.setByte(i, (b1 + b2));
+          }
+
+          /* Copying the last piece is done in the following manner:
+           * if the source vector has 1 or more bytes remaining, we copy
+           * the last piece as a byte formed by shifting data
+           * from the current byte and the next byte.
+           *
+           * if the source vector has no more bytes remaining
+           * (we are at the last byte), we copy the last piece as a byte
+           * by shifting data from the current byte.
+           */
+          if ((firstByteSource + byteSizeTarget - 1) < lastByteSource) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer,
+                    firstByteSource + byteSizeTarget, offset);
+
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1 + b2);
+          } else {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1);
+          }
+        }
+      }
+    }
+
+    @Override
+    public ValueVector getTo() {
+      return to;
+    }
+
+    @Override
+    public void copyValueSafe(int from, int to) {
+      this.to.copyFrom(from, to, LargeListVector.this);
+    }
+  }
+
+  @Override
+  public UnionLargeListReader getReader() {
+    if (reader == null) {
+      reader = new UnionLargeListReader(this);
+    }
+    return reader;
+  }
+
+  /**
+   * Initialize the data vector (and execute callback) if it hasn't already been done,
+   * returns the data vector.
+   */
+  public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType) {
+    boolean created = false;
+    if (vector instanceof NullVector) {
+      vector = fieldType.createNewSingleVector(defaultDataVectorName, allocator, callBack);
+      // returned vector must have the same field
+      created = true;
+      if (callBack != null &&
+          // not a schema change if changing from ZeroVector to ZeroVector
+          (fieldType.getType().getTypeID() != ArrowType.ArrowTypeID.Null)) {
+        callBack.doWork();
+      }
+    }
+
+    if (vector.getField().getType().getTypeID() != fieldType.getType().getTypeID()) {
+      final String msg = String.format("Inner vector type mismatch. Requested type: [%s], actual type: [%s]",
+          fieldType.getType().getTypeID(), vector.getField().getType().getTypeID());
+      throw new SchemaChangeRuntimeException(msg);
+    }
+
+    invalidateReader();
+    return new AddOrGetResult<>((T) vector, created);
+  }
+
+  /**
+   * Get the size (number of bytes) of underlying buffers used by this
+   * vector.
+   * @return size of underlying buffers.
+   */
+  @Override
+  public int getBufferSize() {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int offsetBufferSize = (valueCount + 1) * OFFSET_WIDTH;
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    return offsetBufferSize + validityBufferSize + vector.getBufferSize();
+  }
+  
+  @Override
+  public int getBufferSizeFor(int valueCount) {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    long innerVectorValueCount = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+
+    return ((valueCount + 1) * OFFSET_WIDTH) +
+        vector.getBufferSizeFor(checkedCastToInt(innerVectorValueCount)) +
+        validityBufferSize;
+  }
+
+  @Override
+  public Field getField() {
+    return new Field(getName(), fieldType, Collections.singletonList(getDataVector().getField()));
+  }
+
+  @Override
+  public MinorType getMinorType() {
+    return MinorType.LIST;
+  }
+
+  @Override
+  public String getName() {
+    return null;
+  }
+
+  @Override
+  public void clear() {
+    offsetBuffer = releaseBuffer(offsetBuffer);
+    vector.clear();
+    valueCount = 0;
+    super.clear();
+    validityBuffer = releaseBuffer(validityBuffer);
+    lastSet = -1;
+  }
+
+  @Override
+  public void reset() {
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+    vector.reset();
+    valueCount = 0;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+    lastSet = -1;
+  }
+
+  /**
+   * Return the underlying buffers associated with this vector. Note that this doesn't
+   * impact the reference counts for this buffer so it only should be used for in-context
+   * access. Also note that this buffer changes regularly thus
+   * external classes shouldn't hold a reference to it (unless they change it).
+   *
+   * @param clear Whether to clear vector before returning; the buffers will still be refcounted
+   *              but the returned array will be the only reference to them
+   * @return The underlying {@link ArrowBuf buffers} that is used by this
+   *         vector instance.
+   */
+  @Override
+  public ArrowBuf[] getBuffers(boolean clear) {
+    setReaderAndWriterIndex();
+    final ArrowBuf[] buffers;
+    if (getBufferSize() == 0) {
+      buffers = new ArrowBuf[0];
+    } else {
+      List<ArrowBuf> list = new ArrayList<>();
+      list.add(offsetBuffer);
+      list.add(validityBuffer);
+      list.addAll(Arrays.asList(vector.getBuffers(false)));
+      buffers = list.toArray(new ArrowBuf[list.size()]);
+    }
+    if (clear) {
+      for (ArrowBuf buffer : buffers) {
+        buffer.getReferenceManager().retain();
+      }
+      clear();
+    }
+    return buffers;
+  }
+
+  protected void invalidateReader() {
+    reader = null;
+  }
+
+  /**
+   * Get the element in the list vector at a particular index.
+   * @param index position of the element
+   * @return Object at given position
+   */
+  @Override
+  public Object getObject(int index) {
+    if (isSet(index) == 0) {
+      return null;
+    }
+    final List<Object> vals = new JsonStringArrayList<>();
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    final ValueVector vv = getDataVector();
+    for (long i = start; i < end; i++) {
+      vals.add(vv.getObject(checkedCastToInt(i)));
+    }
+
+    return vals;
+  }
+
+  /**
+   * Check if element at given index is null.
+   *
+   * @param index position of element
+   * @return true if element at given index is null, false otherwise
+   */
+  @Override
+  public boolean isNull(int index) {
+    return (isSet(index) == 0);
+  }
+
+  /**
+   * Check if element at given index is empty list.
+   * @param index position of element
+   * @return true if element at given index is empty list or NULL, false otherwise
+   */
+  public boolean isEmpty(int index) {
+    if (isNull(index)) {
+      return true;
+    } else {
+      final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+      final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+      return start == end;
+    }
+  }
+
+  /**
+   * Same as {@link #isNull(int)}.
+   *
+   * @param index  position of element
+   * @return 1 if element at given index is not null, 0 otherwise
+   */
+  public int isSet(int index) {
+    final int byteIndex = index >> 3;
+    final byte b = validityBuffer.getByte(byteIndex);
+    final int bitIndex = index & 7;
+    return (b >> bitIndex) & 0x01;
+  }
+
+  /**
+   * Get the number of elements that are null in the vector.
+   *
+   * @return the number of null elements.
+   */
+  @Override
+  public int getNullCount() {
+    return BitVectorHelper.getNullCount(validityBuffer, valueCount);
+  }
+
+  /**
+   * Get the current value capacity for the vector.
+   * @return number of elements that vector can hold.
+   */
+  @Override
+  public int getValueCapacity() {
+    return getValidityAndOffsetValueCapacity();
+  }
+  
+  protected int getOffsetBufferValueCapacity() {
+    return checkedCastToInt(offsetBuffer.capacity() / OFFSET_WIDTH);
+  }
+  
+  private int getValidityAndOffsetValueCapacity() {
+    final int offsetValueCapacity = Math.max(getOffsetBufferValueCapacity() - 1, 0);
+    return Math.min(offsetValueCapacity, getValidityBufferValueCapacity());
+  }
+
+  private int getValidityBufferValueCapacity() {
+    return capAtMaxInt(validityBuffer.capacity() * 8);
+  }
+
+  /**
+   * Sets the list at index to be not-null.  Reallocates validity buffer if index
+   * is larger than current capacity.
+   */
+  public void setNotNull(int index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+  }
+
+  /**
+   * Start a new value in the list vector.
+   *
+   * @param index index of the value to start
+   */
+  public long startNewValue(long index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    for (long i = lastSet + 1; i <= index; i++) {

Review comment:
       `i` should be `int`

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {
+    final long currentBufferCapacity = offsetBuffer.capacity();
+    long baseSize = offsetAllocationSizeInBytes;
+
+    if (baseSize < currentBufferCapacity) {
+      baseSize = currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    newAllocationSize = Math.min(newAllocationSize, (long) (OFFSET_WIDTH) * Integer.MAX_VALUE);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE || newAllocationSize <= baseSize) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer(newAllocationSize);
+    newBuf.setBytes(0, offsetBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    offsetBuffer.getReferenceManager().release(1);
+    offsetBuffer = newBuf;
+    offsetAllocationSizeInBytes = newAllocationSize;
+  }
+  
+  private void reallocValidityBuffer() {
+    final int currentBufferCapacity = checkedCastToInt(validityBuffer.capacity());
+    long baseSize = validityAllocationSizeInBytes;
+
+    if (baseSize < (long) currentBufferCapacity) {
+      baseSize = (long) currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer((int) newAllocationSize);
+    newBuf.setBytes(0, validityBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    validityBuffer.getReferenceManager().release(1);
+    validityBuffer = newBuf;
+    validityAllocationSizeInBytes = (int) newAllocationSize;
+  }
+
+  /**
+   * Same as {@link #copyFrom(int, int, ValueVector)} except that
+   * it handles the case when the capacity of the vector needs to be expanded
+   * before copy.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFromSafe(int inIndex, int outIndex, ValueVector from) {
+    copyFrom(inIndex, outIndex, from);
+  }
+
+  /**
+   * Copy a cell value from a particular index in source vector to a particular
+   * position in this vector.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFrom(int inIndex, int outIndex, ValueVector from) {
+    Preconditions.checkArgument(this.getMinorType() == from.getMinorType());
+    FieldReader in = from.getReader();
+    in.setPosition(inIndex);
+    UnionLargeListWriter out = getWriter();
+    out.setIndex(outIndex);
+    ComplexCopier.copy(in, out);
+  }
+
+  @Override
+  public UInt4Vector getOffsetVector() {
+    return null;
+  }
+
+  /**
+   * Get the inner data vector for this list vector.
+   * @return data vector
+   */
+  @Override
+  public FieldVector getDataVector() {
+    return vector;
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator) {
+    return getTransferPair(ref, allocator, null);
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator, CallBack callBack) {
+    return new TransferImpl(ref, allocator, callBack);
+  }
+
+  @Override
+  public TransferPair makeTransferPair(ValueVector target) {
+    return new TransferImpl((LargeListVector) target);
+  }
+
+  @Override
+  public long getValidityBufferAddress() {
+    return (validityBuffer.memoryAddress());
+  }
+
+  @Override
+  public long getDataBufferAddress() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public long getOffsetBufferAddress() {
+    return (offsetBuffer.memoryAddress());
+  }
+
+  @Override
+  public ArrowBuf getValidityBuffer() {
+    return validityBuffer;
+  }
+
+  @Override
+  public ArrowBuf getDataBuffer() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public ArrowBuf getOffsetBuffer() {
+    return offsetBuffer;
+  }
+
+  @Override
+  public int getValueCount() {
+    return valueCount;
+  }
+
+  @Override
+  public int hashCode(int index) {
+    return hashCode(index, null);
+  }
+
+  @Override
+  public int hashCode(int index, ArrowBufHasher hasher) {
+    if (isSet(index) == 0) {
+      return ArrowBufPointer.NULL_HASH_CODE;
+    }
+    int hash = 0;
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    for (long i = start; i < end; i++) {
+      hash = ByteFunctionHelpers.combineHash(hash, vector.hashCode(checkedCastToInt(i), hasher));
+    }
+    return hash;
+  }
+
+  @Override
+  public <OUT, IN> OUT accept(VectorVisitor<OUT, IN> visitor, IN value) {
+    return visitor.visit(this, value);
+  }
+
+  public UnionLargeListWriter getWriter() {
+    return new UnionLargeListWriter(this);
+  }
+
+  protected void replaceDataVector(FieldVector v) {
+    vector.clear();
+    vector = v;
+  }
+
+  @Override
+  public UnionVector promoteToUnion() {
+    UnionVector vector = new UnionVector("$data$", allocator, callBack);
+    replaceDataVector(vector);
+    invalidateReader();
+    if (callBack != null) {
+      callBack.doWork();
+    }
+    return vector;
+  }
+
+  private class TransferImpl implements TransferPair {
+
+    LargeListVector to;
+    TransferPair dataTransferPair;
+
+    public TransferImpl(String name, BufferAllocator allocator, CallBack callBack) {
+      this(new LargeListVector(name, allocator, fieldType, callBack));
+    }
+
+    public TransferImpl(LargeListVector to) {
+      this.to = to;
+      to.addOrGetVector(vector.getField().getFieldType());
+      if (to.getDataVector() instanceof ZeroVector) {
+        to.addOrGetVector(vector.getField().getFieldType());
+      }
+      dataTransferPair = getDataVector().makeTransferPair(to.getDataVector());
+    }
+
+    /**
+     * Transfer this vector'data to another vector. The memory associated
+     * with this vector is transferred to the allocator of target vector
+     * for accounting and management purposes.
+     */
+    @Override
+    public void transfer() {
+      to.clear();
+      dataTransferPair.transfer();
+      to.validityBuffer = transferBuffer(validityBuffer, to.allocator);
+      to.offsetBuffer = transferBuffer(offsetBuffer, to.allocator);
+      to.lastSet = lastSet;
+      if (valueCount > 0) {
+        to.setValueCount(valueCount);
+      }
+      clear();
+    }
+
+    /**
+     * Slice this vector at desired index and length and transfer the
+     * corresponding data to the target vector.
+     * @param startIndex start position of the split in source vector.
+     * @param length length of the split.
+     */
+    @Override
+    public void splitAndTransfer(int startIndex, int length) {
+      Preconditions.checkArgument(startIndex >= 0 && length >= 0 && startIndex + length <= valueCount,
+          "Invalid parameters startIndex: %s, length: %s for valueCount: %s", startIndex, length, valueCount);
+      final long startPoint = offsetBuffer.getLong(startIndex * OFFSET_WIDTH);
+      final long sliceLength = offsetBuffer.getLong((startIndex + length) * OFFSET_WIDTH) - startPoint;
+      to.clear();
+      to.allocateOffsetBuffer((length + 1) * OFFSET_WIDTH);
+      /* splitAndTransfer offset buffer */
+      for (int i = 0; i < length + 1; i++) {
+        final long relativeOffset = offsetBuffer.getLong((startIndex + i) * OFFSET_WIDTH) - startPoint;
+        to.offsetBuffer.setLong(i * OFFSET_WIDTH, relativeOffset);
+      }
+      /* splitAndTransfer validity buffer */
+      splitAndTransferValidityBuffer(startIndex, length, to);
+      /* splitAndTransfer data buffer */
+      dataTransferPair.splitAndTransfer(checkedCastToInt(startPoint), checkedCastToInt(sliceLength));
+      to.lastSet = length - 1;
+      to.setValueCount(length);
+    }
+
+    /*
+     * transfer the validity.
+     */
+    private void splitAndTransferValidityBuffer(int startIndex, int length, LargeListVector target) {
+      int firstByteSource = BitVectorHelper.byteIndex(startIndex);
+      int lastByteSource = BitVectorHelper.byteIndex(valueCount - 1);
+      int byteSizeTarget = getValidityBufferSizeFromCount(length);
+      int offset = startIndex % 8;
+
+      if (length > 0) {
+        if (offset == 0) {
+          // slice
+          if (target.validityBuffer != null) {
+            target.validityBuffer.getReferenceManager().release();
+          }
+          target.validityBuffer = validityBuffer.slice(firstByteSource, byteSizeTarget);
+          target.validityBuffer.getReferenceManager().retain(1);
+        } else {
+          /* Copy data
+           * When the first bit starts from the middle of a byte (offset != 0),
+           * copy data from src BitVector.
+           * Each byte in the target is composed by a part in i-th byte,
+           * another part in (i+1)-th byte.
+           */
+          target.allocateValidityBuffer(byteSizeTarget);
+
+          for (int i = 0; i < byteSizeTarget - 1; i++) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer, firstByteSource + i, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer, firstByteSource + i + 1, offset);
+
+            target.validityBuffer.setByte(i, (b1 + b2));
+          }
+
+          /* Copying the last piece is done in the following manner:
+           * if the source vector has 1 or more bytes remaining, we copy
+           * the last piece as a byte formed by shifting data
+           * from the current byte and the next byte.
+           *
+           * if the source vector has no more bytes remaining
+           * (we are at the last byte), we copy the last piece as a byte
+           * by shifting data from the current byte.
+           */
+          if ((firstByteSource + byteSizeTarget - 1) < lastByteSource) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer,
+                    firstByteSource + byteSizeTarget, offset);
+
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1 + b2);
+          } else {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1);
+          }
+        }
+      }
+    }
+
+    @Override
+    public ValueVector getTo() {
+      return to;
+    }
+
+    @Override
+    public void copyValueSafe(int from, int to) {
+      this.to.copyFrom(from, to, LargeListVector.this);
+    }
+  }
+
+  @Override
+  public UnionLargeListReader getReader() {
+    if (reader == null) {
+      reader = new UnionLargeListReader(this);
+    }
+    return reader;
+  }
+
+  /**
+   * Initialize the data vector (and execute callback) if it hasn't already been done,
+   * returns the data vector.
+   */
+  public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType) {
+    boolean created = false;
+    if (vector instanceof NullVector) {
+      vector = fieldType.createNewSingleVector(defaultDataVectorName, allocator, callBack);
+      // returned vector must have the same field
+      created = true;
+      if (callBack != null &&
+          // not a schema change if changing from ZeroVector to ZeroVector
+          (fieldType.getType().getTypeID() != ArrowType.ArrowTypeID.Null)) {
+        callBack.doWork();
+      }
+    }
+
+    if (vector.getField().getType().getTypeID() != fieldType.getType().getTypeID()) {
+      final String msg = String.format("Inner vector type mismatch. Requested type: [%s], actual type: [%s]",
+          fieldType.getType().getTypeID(), vector.getField().getType().getTypeID());
+      throw new SchemaChangeRuntimeException(msg);
+    }
+
+    invalidateReader();
+    return new AddOrGetResult<>((T) vector, created);
+  }
+
+  /**
+   * Get the size (number of bytes) of underlying buffers used by this
+   * vector.
+   * @return size of underlying buffers.
+   */
+  @Override
+  public int getBufferSize() {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int offsetBufferSize = (valueCount + 1) * OFFSET_WIDTH;
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    return offsetBufferSize + validityBufferSize + vector.getBufferSize();
+  }
+  
+  @Override
+  public int getBufferSizeFor(int valueCount) {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    long innerVectorValueCount = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+
+    return ((valueCount + 1) * OFFSET_WIDTH) +
+        vector.getBufferSizeFor(checkedCastToInt(innerVectorValueCount)) +
+        validityBufferSize;
+  }
+
+  @Override
+  public Field getField() {
+    return new Field(getName(), fieldType, Collections.singletonList(getDataVector().getField()));
+  }
+
+  @Override
+  public MinorType getMinorType() {
+    return MinorType.LIST;
+  }
+
+  @Override
+  public String getName() {
+    return null;
+  }
+
+  @Override
+  public void clear() {
+    offsetBuffer = releaseBuffer(offsetBuffer);
+    vector.clear();
+    valueCount = 0;
+    super.clear();
+    validityBuffer = releaseBuffer(validityBuffer);
+    lastSet = -1;
+  }
+
+  @Override
+  public void reset() {
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+    vector.reset();
+    valueCount = 0;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+    lastSet = -1;
+  }
+
+  /**
+   * Return the underlying buffers associated with this vector. Note that this doesn't
+   * impact the reference counts for this buffer so it only should be used for in-context
+   * access. Also note that this buffer changes regularly thus
+   * external classes shouldn't hold a reference to it (unless they change it).
+   *
+   * @param clear Whether to clear vector before returning; the buffers will still be refcounted
+   *              but the returned array will be the only reference to them
+   * @return The underlying {@link ArrowBuf buffers} that is used by this
+   *         vector instance.
+   */
+  @Override
+  public ArrowBuf[] getBuffers(boolean clear) {
+    setReaderAndWriterIndex();
+    final ArrowBuf[] buffers;
+    if (getBufferSize() == 0) {
+      buffers = new ArrowBuf[0];
+    } else {
+      List<ArrowBuf> list = new ArrayList<>();
+      list.add(offsetBuffer);
+      list.add(validityBuffer);
+      list.addAll(Arrays.asList(vector.getBuffers(false)));
+      buffers = list.toArray(new ArrowBuf[list.size()]);
+    }
+    if (clear) {
+      for (ArrowBuf buffer : buffers) {
+        buffer.getReferenceManager().retain();
+      }
+      clear();
+    }
+    return buffers;
+  }
+
+  protected void invalidateReader() {
+    reader = null;
+  }
+
+  /**
+   * Get the element in the list vector at a particular index.
+   * @param index position of the element
+   * @return Object at given position
+   */
+  @Override
+  public Object getObject(int index) {
+    if (isSet(index) == 0) {
+      return null;
+    }
+    final List<Object> vals = new JsonStringArrayList<>();
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    final ValueVector vv = getDataVector();
+    for (long i = start; i < end; i++) {
+      vals.add(vv.getObject(checkedCastToInt(i)));
+    }
+
+    return vals;
+  }
+
+  /**
+   * Check if element at given index is null.
+   *
+   * @param index position of element
+   * @return true if element at given index is null, false otherwise
+   */
+  @Override
+  public boolean isNull(int index) {
+    return (isSet(index) == 0);
+  }
+
+  /**
+   * Check if element at given index is empty list.
+   * @param index position of element
+   * @return true if element at given index is empty list or NULL, false otherwise
+   */
+  public boolean isEmpty(int index) {
+    if (isNull(index)) {
+      return true;
+    } else {
+      final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+      final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+      return start == end;
+    }
+  }
+
+  /**
+   * Same as {@link #isNull(int)}.
+   *
+   * @param index  position of element
+   * @return 1 if element at given index is not null, 0 otherwise
+   */
+  public int isSet(int index) {
+    final int byteIndex = index >> 3;
+    final byte b = validityBuffer.getByte(byteIndex);
+    final int bitIndex = index & 7;
+    return (b >> bitIndex) & 0x01;
+  }
+
+  /**
+   * Get the number of elements that are null in the vector.
+   *
+   * @return the number of null elements.
+   */
+  @Override
+  public int getNullCount() {
+    return BitVectorHelper.getNullCount(validityBuffer, valueCount);
+  }
+
+  /**
+   * Get the current value capacity for the vector.
+   * @return number of elements that vector can hold.
+   */
+  @Override
+  public int getValueCapacity() {
+    return getValidityAndOffsetValueCapacity();
+  }
+  
+  protected int getOffsetBufferValueCapacity() {
+    return checkedCastToInt(offsetBuffer.capacity() / OFFSET_WIDTH);
+  }
+  
+  private int getValidityAndOffsetValueCapacity() {
+    final int offsetValueCapacity = Math.max(getOffsetBufferValueCapacity() - 1, 0);
+    return Math.min(offsetValueCapacity, getValidityBufferValueCapacity());
+  }
+
+  private int getValidityBufferValueCapacity() {
+    return capAtMaxInt(validityBuffer.capacity() * 8);
+  }
+
+  /**
+   * Sets the list at index to be not-null.  Reallocates validity buffer if index
+   * is larger than current capacity.
+   */
+  public void setNotNull(int index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+  }
+
+  /**
+   * Start a new value in the list vector.
+   *
+   * @param index index of the value to start
+   */
+  public long startNewValue(long index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    for (long i = lastSet + 1; i <= index; i++) {
+      final long currentOffset = offsetBuffer.getLong(i * OFFSET_WIDTH);
+      offsetBuffer.setLong((i + 1) * OFFSET_WIDTH, currentOffset);
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+    return checkedCastToInt(offsetBuffer.getLong((lastSet + 1) * OFFSET_WIDTH));
+  }
+
+  /**
+   * End the current value.
+   *
+   * @param index index of the value to end
+   * @param size  number of elements in the list that was written
+   */
+  public void endValue(int index, int size) {
+    final long currentOffset = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    offsetBuffer.setLong((index + 1) * OFFSET_WIDTH, currentOffset + size);
+  }
+
+  /**
+   * Sets the value count for the vector.
+   *
+   * @param valueCount   value count
+   */
+  @Override
+  public void setValueCount(int valueCount) {
+    this.valueCount = valueCount;
+    if (valueCount > 0) {
+      while (valueCount > getValidityAndOffsetValueCapacity()) {
+        /* check if validity and offset buffers need to be re-allocated */
+        reallocValidityAndOffsetBuffers();
+      }
+      for (long i = lastSet + 1; i < valueCount; i++) {

Review comment:
       `i` should be `int`

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {
+    final long currentBufferCapacity = offsetBuffer.capacity();
+    long baseSize = offsetAllocationSizeInBytes;
+
+    if (baseSize < currentBufferCapacity) {
+      baseSize = currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    newAllocationSize = Math.min(newAllocationSize, (long) (OFFSET_WIDTH) * Integer.MAX_VALUE);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE || newAllocationSize <= baseSize) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer(newAllocationSize);
+    newBuf.setBytes(0, offsetBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    offsetBuffer.getReferenceManager().release(1);
+    offsetBuffer = newBuf;
+    offsetAllocationSizeInBytes = newAllocationSize;
+  }
+  
+  private void reallocValidityBuffer() {
+    final int currentBufferCapacity = checkedCastToInt(validityBuffer.capacity());
+    long baseSize = validityAllocationSizeInBytes;
+
+    if (baseSize < (long) currentBufferCapacity) {
+      baseSize = (long) currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer((int) newAllocationSize);
+    newBuf.setBytes(0, validityBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    validityBuffer.getReferenceManager().release(1);
+    validityBuffer = newBuf;
+    validityAllocationSizeInBytes = (int) newAllocationSize;
+  }
+
+  /**
+   * Same as {@link #copyFrom(int, int, ValueVector)} except that
+   * it handles the case when the capacity of the vector needs to be expanded
+   * before copy.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFromSafe(int inIndex, int outIndex, ValueVector from) {
+    copyFrom(inIndex, outIndex, from);
+  }
+
+  /**
+   * Copy a cell value from a particular index in source vector to a particular
+   * position in this vector.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFrom(int inIndex, int outIndex, ValueVector from) {
+    Preconditions.checkArgument(this.getMinorType() == from.getMinorType());
+    FieldReader in = from.getReader();
+    in.setPosition(inIndex);
+    UnionLargeListWriter out = getWriter();
+    out.setIndex(outIndex);
+    ComplexCopier.copy(in, out);
+  }
+
+  @Override
+  public UInt4Vector getOffsetVector() {
+    return null;
+  }
+
+  /**
+   * Get the inner data vector for this list vector.
+   * @return data vector
+   */
+  @Override
+  public FieldVector getDataVector() {
+    return vector;
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator) {
+    return getTransferPair(ref, allocator, null);
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator, CallBack callBack) {
+    return new TransferImpl(ref, allocator, callBack);
+  }
+
+  @Override
+  public TransferPair makeTransferPair(ValueVector target) {
+    return new TransferImpl((LargeListVector) target);
+  }
+
+  @Override
+  public long getValidityBufferAddress() {
+    return (validityBuffer.memoryAddress());
+  }
+
+  @Override
+  public long getDataBufferAddress() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public long getOffsetBufferAddress() {
+    return (offsetBuffer.memoryAddress());
+  }
+
+  @Override
+  public ArrowBuf getValidityBuffer() {
+    return validityBuffer;
+  }
+
+  @Override
+  public ArrowBuf getDataBuffer() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public ArrowBuf getOffsetBuffer() {
+    return offsetBuffer;
+  }
+
+  @Override
+  public int getValueCount() {
+    return valueCount;
+  }
+
+  @Override
+  public int hashCode(int index) {
+    return hashCode(index, null);
+  }
+
+  @Override
+  public int hashCode(int index, ArrowBufHasher hasher) {
+    if (isSet(index) == 0) {
+      return ArrowBufPointer.NULL_HASH_CODE;
+    }
+    int hash = 0;
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    for (long i = start; i < end; i++) {
+      hash = ByteFunctionHelpers.combineHash(hash, vector.hashCode(checkedCastToInt(i), hasher));
+    }
+    return hash;
+  }
+
+  @Override
+  public <OUT, IN> OUT accept(VectorVisitor<OUT, IN> visitor, IN value) {
+    return visitor.visit(this, value);
+  }
+
+  public UnionLargeListWriter getWriter() {
+    return new UnionLargeListWriter(this);
+  }
+
+  protected void replaceDataVector(FieldVector v) {
+    vector.clear();
+    vector = v;
+  }
+
+  @Override
+  public UnionVector promoteToUnion() {
+    UnionVector vector = new UnionVector("$data$", allocator, callBack);
+    replaceDataVector(vector);
+    invalidateReader();
+    if (callBack != null) {
+      callBack.doWork();
+    }
+    return vector;
+  }
+
+  private class TransferImpl implements TransferPair {
+
+    LargeListVector to;
+    TransferPair dataTransferPair;
+
+    public TransferImpl(String name, BufferAllocator allocator, CallBack callBack) {
+      this(new LargeListVector(name, allocator, fieldType, callBack));
+    }
+
+    public TransferImpl(LargeListVector to) {
+      this.to = to;
+      to.addOrGetVector(vector.getField().getFieldType());
+      if (to.getDataVector() instanceof ZeroVector) {
+        to.addOrGetVector(vector.getField().getFieldType());
+      }
+      dataTransferPair = getDataVector().makeTransferPair(to.getDataVector());
+    }
+
+    /**
+     * Transfer this vector'data to another vector. The memory associated
+     * with this vector is transferred to the allocator of target vector
+     * for accounting and management purposes.
+     */
+    @Override
+    public void transfer() {
+      to.clear();
+      dataTransferPair.transfer();
+      to.validityBuffer = transferBuffer(validityBuffer, to.allocator);
+      to.offsetBuffer = transferBuffer(offsetBuffer, to.allocator);
+      to.lastSet = lastSet;
+      if (valueCount > 0) {
+        to.setValueCount(valueCount);
+      }
+      clear();
+    }
+
+    /**
+     * Slice this vector at desired index and length and transfer the
+     * corresponding data to the target vector.
+     * @param startIndex start position of the split in source vector.
+     * @param length length of the split.
+     */
+    @Override
+    public void splitAndTransfer(int startIndex, int length) {
+      Preconditions.checkArgument(startIndex >= 0 && length >= 0 && startIndex + length <= valueCount,
+          "Invalid parameters startIndex: %s, length: %s for valueCount: %s", startIndex, length, valueCount);
+      final long startPoint = offsetBuffer.getLong(startIndex * OFFSET_WIDTH);
+      final long sliceLength = offsetBuffer.getLong((startIndex + length) * OFFSET_WIDTH) - startPoint;
+      to.clear();
+      to.allocateOffsetBuffer((length + 1) * OFFSET_WIDTH);
+      /* splitAndTransfer offset buffer */
+      for (int i = 0; i < length + 1; i++) {
+        final long relativeOffset = offsetBuffer.getLong((startIndex + i) * OFFSET_WIDTH) - startPoint;
+        to.offsetBuffer.setLong(i * OFFSET_WIDTH, relativeOffset);
+      }
+      /* splitAndTransfer validity buffer */
+      splitAndTransferValidityBuffer(startIndex, length, to);
+      /* splitAndTransfer data buffer */
+      dataTransferPair.splitAndTransfer(checkedCastToInt(startPoint), checkedCastToInt(sliceLength));
+      to.lastSet = length - 1;
+      to.setValueCount(length);
+    }
+
+    /*
+     * transfer the validity.
+     */
+    private void splitAndTransferValidityBuffer(int startIndex, int length, LargeListVector target) {
+      int firstByteSource = BitVectorHelper.byteIndex(startIndex);
+      int lastByteSource = BitVectorHelper.byteIndex(valueCount - 1);
+      int byteSizeTarget = getValidityBufferSizeFromCount(length);
+      int offset = startIndex % 8;
+
+      if (length > 0) {
+        if (offset == 0) {
+          // slice
+          if (target.validityBuffer != null) {
+            target.validityBuffer.getReferenceManager().release();
+          }
+          target.validityBuffer = validityBuffer.slice(firstByteSource, byteSizeTarget);
+          target.validityBuffer.getReferenceManager().retain(1);
+        } else {
+          /* Copy data
+           * When the first bit starts from the middle of a byte (offset != 0),
+           * copy data from src BitVector.
+           * Each byte in the target is composed by a part in i-th byte,
+           * another part in (i+1)-th byte.
+           */
+          target.allocateValidityBuffer(byteSizeTarget);
+
+          for (int i = 0; i < byteSizeTarget - 1; i++) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer, firstByteSource + i, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer, firstByteSource + i + 1, offset);
+
+            target.validityBuffer.setByte(i, (b1 + b2));
+          }
+
+          /* Copying the last piece is done in the following manner:
+           * if the source vector has 1 or more bytes remaining, we copy
+           * the last piece as a byte formed by shifting data
+           * from the current byte and the next byte.
+           *
+           * if the source vector has no more bytes remaining
+           * (we are at the last byte), we copy the last piece as a byte
+           * by shifting data from the current byte.
+           */
+          if ((firstByteSource + byteSizeTarget - 1) < lastByteSource) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer,
+                    firstByteSource + byteSizeTarget, offset);
+
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1 + b2);
+          } else {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1);
+          }
+        }
+      }
+    }
+
+    @Override
+    public ValueVector getTo() {
+      return to;
+    }
+
+    @Override
+    public void copyValueSafe(int from, int to) {
+      this.to.copyFrom(from, to, LargeListVector.this);
+    }
+  }
+
+  @Override
+  public UnionLargeListReader getReader() {
+    if (reader == null) {
+      reader = new UnionLargeListReader(this);
+    }
+    return reader;
+  }
+
+  /**
+   * Initialize the data vector (and execute callback) if it hasn't already been done,
+   * returns the data vector.
+   */
+  public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType) {
+    boolean created = false;
+    if (vector instanceof NullVector) {
+      vector = fieldType.createNewSingleVector(defaultDataVectorName, allocator, callBack);
+      // returned vector must have the same field
+      created = true;
+      if (callBack != null &&
+          // not a schema change if changing from ZeroVector to ZeroVector
+          (fieldType.getType().getTypeID() != ArrowType.ArrowTypeID.Null)) {
+        callBack.doWork();
+      }
+    }
+
+    if (vector.getField().getType().getTypeID() != fieldType.getType().getTypeID()) {
+      final String msg = String.format("Inner vector type mismatch. Requested type: [%s], actual type: [%s]",
+          fieldType.getType().getTypeID(), vector.getField().getType().getTypeID());
+      throw new SchemaChangeRuntimeException(msg);
+    }
+
+    invalidateReader();
+    return new AddOrGetResult<>((T) vector, created);
+  }
+
+  /**
+   * Get the size (number of bytes) of underlying buffers used by this
+   * vector.
+   * @return size of underlying buffers.
+   */
+  @Override
+  public int getBufferSize() {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int offsetBufferSize = (valueCount + 1) * OFFSET_WIDTH;
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    return offsetBufferSize + validityBufferSize + vector.getBufferSize();
+  }
+  
+  @Override
+  public int getBufferSizeFor(int valueCount) {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    long innerVectorValueCount = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+
+    return ((valueCount + 1) * OFFSET_WIDTH) +
+        vector.getBufferSizeFor(checkedCastToInt(innerVectorValueCount)) +
+        validityBufferSize;
+  }
+
+  @Override
+  public Field getField() {
+    return new Field(getName(), fieldType, Collections.singletonList(getDataVector().getField()));
+  }
+
+  @Override
+  public MinorType getMinorType() {
+    return MinorType.LIST;
+  }
+
+  @Override
+  public String getName() {
+    return null;
+  }
+
+  @Override
+  public void clear() {
+    offsetBuffer = releaseBuffer(offsetBuffer);
+    vector.clear();
+    valueCount = 0;
+    super.clear();
+    validityBuffer = releaseBuffer(validityBuffer);
+    lastSet = -1;
+  }
+
+  @Override
+  public void reset() {
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+    vector.reset();
+    valueCount = 0;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+    lastSet = -1;
+  }
+
+  /**
+   * Return the underlying buffers associated with this vector. Note that this doesn't
+   * impact the reference counts for this buffer so it only should be used for in-context
+   * access. Also note that this buffer changes regularly thus
+   * external classes shouldn't hold a reference to it (unless they change it).
+   *
+   * @param clear Whether to clear vector before returning; the buffers will still be refcounted
+   *              but the returned array will be the only reference to them
+   * @return The underlying {@link ArrowBuf buffers} that is used by this
+   *         vector instance.
+   */
+  @Override
+  public ArrowBuf[] getBuffers(boolean clear) {
+    setReaderAndWriterIndex();
+    final ArrowBuf[] buffers;
+    if (getBufferSize() == 0) {
+      buffers = new ArrowBuf[0];
+    } else {
+      List<ArrowBuf> list = new ArrayList<>();
+      list.add(offsetBuffer);
+      list.add(validityBuffer);
+      list.addAll(Arrays.asList(vector.getBuffers(false)));
+      buffers = list.toArray(new ArrowBuf[list.size()]);
+    }
+    if (clear) {
+      for (ArrowBuf buffer : buffers) {
+        buffer.getReferenceManager().retain();
+      }
+      clear();
+    }
+    return buffers;
+  }
+
+  protected void invalidateReader() {
+    reader = null;
+  }
+
+  /**
+   * Get the element in the list vector at a particular index.
+   * @param index position of the element
+   * @return Object at given position
+   */
+  @Override
+  public Object getObject(int index) {
+    if (isSet(index) == 0) {
+      return null;
+    }
+    final List<Object> vals = new JsonStringArrayList<>();
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    final ValueVector vv = getDataVector();
+    for (long i = start; i < end; i++) {
+      vals.add(vv.getObject(checkedCastToInt(i)));
+    }
+
+    return vals;
+  }
+
+  /**
+   * Check if element at given index is null.
+   *
+   * @param index position of element
+   * @return true if element at given index is null, false otherwise
+   */
+  @Override
+  public boolean isNull(int index) {
+    return (isSet(index) == 0);
+  }
+
+  /**
+   * Check if element at given index is empty list.
+   * @param index position of element
+   * @return true if element at given index is empty list or NULL, false otherwise
+   */
+  public boolean isEmpty(int index) {
+    if (isNull(index)) {
+      return true;
+    } else {
+      final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+      final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+      return start == end;
+    }
+  }
+
+  /**
+   * Same as {@link #isNull(int)}.
+   *
+   * @param index  position of element
+   * @return 1 if element at given index is not null, 0 otherwise
+   */
+  public int isSet(int index) {
+    final int byteIndex = index >> 3;
+    final byte b = validityBuffer.getByte(byteIndex);
+    final int bitIndex = index & 7;
+    return (b >> bitIndex) & 0x01;
+  }
+
+  /**
+   * Get the number of elements that are null in the vector.
+   *
+   * @return the number of null elements.
+   */
+  @Override
+  public int getNullCount() {
+    return BitVectorHelper.getNullCount(validityBuffer, valueCount);
+  }
+
+  /**
+   * Get the current value capacity for the vector.
+   * @return number of elements that vector can hold.
+   */
+  @Override
+  public int getValueCapacity() {
+    return getValidityAndOffsetValueCapacity();
+  }
+  
+  protected int getOffsetBufferValueCapacity() {
+    return checkedCastToInt(offsetBuffer.capacity() / OFFSET_WIDTH);
+  }
+  
+  private int getValidityAndOffsetValueCapacity() {
+    final int offsetValueCapacity = Math.max(getOffsetBufferValueCapacity() - 1, 0);
+    return Math.min(offsetValueCapacity, getValidityBufferValueCapacity());
+  }
+
+  private int getValidityBufferValueCapacity() {
+    return capAtMaxInt(validityBuffer.capacity() * 8);
+  }
+
+  /**
+   * Sets the list at index to be not-null.  Reallocates validity buffer if index
+   * is larger than current capacity.
+   */
+  public void setNotNull(int index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+  }
+
+  /**
+   * Start a new value in the list vector.
+   *
+   * @param index index of the value to start
+   */
+  public long startNewValue(long index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    for (long i = lastSet + 1; i <= index; i++) {
+      final long currentOffset = offsetBuffer.getLong(i * OFFSET_WIDTH);
+      offsetBuffer.setLong((i + 1) * OFFSET_WIDTH, currentOffset);
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+    return checkedCastToInt(offsetBuffer.getLong((lastSet + 1) * OFFSET_WIDTH));

Review comment:
       I don't think you should cast the return value

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {
+    final long currentBufferCapacity = offsetBuffer.capacity();
+    long baseSize = offsetAllocationSizeInBytes;
+
+    if (baseSize < currentBufferCapacity) {
+      baseSize = currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    newAllocationSize = Math.min(newAllocationSize, (long) (OFFSET_WIDTH) * Integer.MAX_VALUE);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE || newAllocationSize <= baseSize) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer(newAllocationSize);
+    newBuf.setBytes(0, offsetBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    offsetBuffer.getReferenceManager().release(1);
+    offsetBuffer = newBuf;
+    offsetAllocationSizeInBytes = newAllocationSize;
+  }
+  
+  private void reallocValidityBuffer() {
+    final int currentBufferCapacity = checkedCastToInt(validityBuffer.capacity());
+    long baseSize = validityAllocationSizeInBytes;
+
+    if (baseSize < (long) currentBufferCapacity) {
+      baseSize = (long) currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer((int) newAllocationSize);
+    newBuf.setBytes(0, validityBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    validityBuffer.getReferenceManager().release(1);
+    validityBuffer = newBuf;
+    validityAllocationSizeInBytes = (int) newAllocationSize;
+  }
+
+  /**
+   * Same as {@link #copyFrom(int, int, ValueVector)} except that
+   * it handles the case when the capacity of the vector needs to be expanded
+   * before copy.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFromSafe(int inIndex, int outIndex, ValueVector from) {
+    copyFrom(inIndex, outIndex, from);
+  }
+
+  /**
+   * Copy a cell value from a particular index in source vector to a particular
+   * position in this vector.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFrom(int inIndex, int outIndex, ValueVector from) {
+    Preconditions.checkArgument(this.getMinorType() == from.getMinorType());
+    FieldReader in = from.getReader();
+    in.setPosition(inIndex);
+    UnionLargeListWriter out = getWriter();
+    out.setIndex(outIndex);
+    ComplexCopier.copy(in, out);
+  }
+
+  @Override
+  public UInt4Vector getOffsetVector() {
+    return null;
+  }
+
+  /**
+   * Get the inner data vector for this list vector.
+   * @return data vector
+   */
+  @Override
+  public FieldVector getDataVector() {
+    return vector;
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator) {
+    return getTransferPair(ref, allocator, null);
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator, CallBack callBack) {
+    return new TransferImpl(ref, allocator, callBack);
+  }
+
+  @Override
+  public TransferPair makeTransferPair(ValueVector target) {
+    return new TransferImpl((LargeListVector) target);
+  }
+
+  @Override
+  public long getValidityBufferAddress() {
+    return (validityBuffer.memoryAddress());
+  }
+
+  @Override
+  public long getDataBufferAddress() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public long getOffsetBufferAddress() {
+    return (offsetBuffer.memoryAddress());
+  }
+
+  @Override
+  public ArrowBuf getValidityBuffer() {
+    return validityBuffer;
+  }
+
+  @Override
+  public ArrowBuf getDataBuffer() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public ArrowBuf getOffsetBuffer() {
+    return offsetBuffer;
+  }
+
+  @Override
+  public int getValueCount() {
+    return valueCount;
+  }
+
+  @Override
+  public int hashCode(int index) {
+    return hashCode(index, null);
+  }
+
+  @Override
+  public int hashCode(int index, ArrowBufHasher hasher) {
+    if (isSet(index) == 0) {
+      return ArrowBufPointer.NULL_HASH_CODE;
+    }
+    int hash = 0;
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    for (long i = start; i < end; i++) {
+      hash = ByteFunctionHelpers.combineHash(hash, vector.hashCode(checkedCastToInt(i), hasher));
+    }
+    return hash;
+  }
+
+  @Override
+  public <OUT, IN> OUT accept(VectorVisitor<OUT, IN> visitor, IN value) {
+    return visitor.visit(this, value);
+  }
+
+  public UnionLargeListWriter getWriter() {
+    return new UnionLargeListWriter(this);
+  }
+
+  protected void replaceDataVector(FieldVector v) {
+    vector.clear();
+    vector = v;
+  }
+
+  @Override
+  public UnionVector promoteToUnion() {
+    UnionVector vector = new UnionVector("$data$", allocator, callBack);
+    replaceDataVector(vector);
+    invalidateReader();
+    if (callBack != null) {
+      callBack.doWork();
+    }
+    return vector;
+  }
+
+  private class TransferImpl implements TransferPair {
+
+    LargeListVector to;
+    TransferPair dataTransferPair;
+
+    public TransferImpl(String name, BufferAllocator allocator, CallBack callBack) {
+      this(new LargeListVector(name, allocator, fieldType, callBack));
+    }
+
+    public TransferImpl(LargeListVector to) {
+      this.to = to;
+      to.addOrGetVector(vector.getField().getFieldType());
+      if (to.getDataVector() instanceof ZeroVector) {
+        to.addOrGetVector(vector.getField().getFieldType());
+      }
+      dataTransferPair = getDataVector().makeTransferPair(to.getDataVector());
+    }
+
+    /**
+     * Transfer this vector'data to another vector. The memory associated
+     * with this vector is transferred to the allocator of target vector
+     * for accounting and management purposes.
+     */
+    @Override
+    public void transfer() {
+      to.clear();
+      dataTransferPair.transfer();
+      to.validityBuffer = transferBuffer(validityBuffer, to.allocator);
+      to.offsetBuffer = transferBuffer(offsetBuffer, to.allocator);
+      to.lastSet = lastSet;
+      if (valueCount > 0) {
+        to.setValueCount(valueCount);
+      }
+      clear();
+    }
+
+    /**
+     * Slice this vector at desired index and length and transfer the
+     * corresponding data to the target vector.
+     * @param startIndex start position of the split in source vector.
+     * @param length length of the split.
+     */
+    @Override
+    public void splitAndTransfer(int startIndex, int length) {
+      Preconditions.checkArgument(startIndex >= 0 && length >= 0 && startIndex + length <= valueCount,
+          "Invalid parameters startIndex: %s, length: %s for valueCount: %s", startIndex, length, valueCount);
+      final long startPoint = offsetBuffer.getLong(startIndex * OFFSET_WIDTH);
+      final long sliceLength = offsetBuffer.getLong((startIndex + length) * OFFSET_WIDTH) - startPoint;
+      to.clear();
+      to.allocateOffsetBuffer((length + 1) * OFFSET_WIDTH);
+      /* splitAndTransfer offset buffer */
+      for (int i = 0; i < length + 1; i++) {
+        final long relativeOffset = offsetBuffer.getLong((startIndex + i) * OFFSET_WIDTH) - startPoint;
+        to.offsetBuffer.setLong(i * OFFSET_WIDTH, relativeOffset);
+      }
+      /* splitAndTransfer validity buffer */
+      splitAndTransferValidityBuffer(startIndex, length, to);
+      /* splitAndTransfer data buffer */
+      dataTransferPair.splitAndTransfer(checkedCastToInt(startPoint), checkedCastToInt(sliceLength));
+      to.lastSet = length - 1;
+      to.setValueCount(length);
+    }
+
+    /*
+     * transfer the validity.
+     */
+    private void splitAndTransferValidityBuffer(int startIndex, int length, LargeListVector target) {
+      int firstByteSource = BitVectorHelper.byteIndex(startIndex);
+      int lastByteSource = BitVectorHelper.byteIndex(valueCount - 1);
+      int byteSizeTarget = getValidityBufferSizeFromCount(length);
+      int offset = startIndex % 8;
+
+      if (length > 0) {
+        if (offset == 0) {
+          // slice
+          if (target.validityBuffer != null) {
+            target.validityBuffer.getReferenceManager().release();
+          }
+          target.validityBuffer = validityBuffer.slice(firstByteSource, byteSizeTarget);
+          target.validityBuffer.getReferenceManager().retain(1);
+        } else {
+          /* Copy data
+           * When the first bit starts from the middle of a byte (offset != 0),
+           * copy data from src BitVector.
+           * Each byte in the target is composed by a part in i-th byte,
+           * another part in (i+1)-th byte.
+           */
+          target.allocateValidityBuffer(byteSizeTarget);
+
+          for (int i = 0; i < byteSizeTarget - 1; i++) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer, firstByteSource + i, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer, firstByteSource + i + 1, offset);
+
+            target.validityBuffer.setByte(i, (b1 + b2));
+          }
+
+          /* Copying the last piece is done in the following manner:
+           * if the source vector has 1 or more bytes remaining, we copy
+           * the last piece as a byte formed by shifting data
+           * from the current byte and the next byte.
+           *
+           * if the source vector has no more bytes remaining
+           * (we are at the last byte), we copy the last piece as a byte
+           * by shifting data from the current byte.
+           */
+          if ((firstByteSource + byteSizeTarget - 1) < lastByteSource) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer,
+                    firstByteSource + byteSizeTarget, offset);
+
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1 + b2);
+          } else {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1);
+          }
+        }
+      }
+    }
+
+    @Override
+    public ValueVector getTo() {
+      return to;
+    }
+
+    @Override
+    public void copyValueSafe(int from, int to) {
+      this.to.copyFrom(from, to, LargeListVector.this);
+    }
+  }
+
+  @Override
+  public UnionLargeListReader getReader() {
+    if (reader == null) {
+      reader = new UnionLargeListReader(this);
+    }
+    return reader;
+  }
+
+  /**
+   * Initialize the data vector (and execute callback) if it hasn't already been done,
+   * returns the data vector.
+   */
+  public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType) {
+    boolean created = false;
+    if (vector instanceof NullVector) {
+      vector = fieldType.createNewSingleVector(defaultDataVectorName, allocator, callBack);
+      // returned vector must have the same field
+      created = true;
+      if (callBack != null &&
+          // not a schema change if changing from ZeroVector to ZeroVector
+          (fieldType.getType().getTypeID() != ArrowType.ArrowTypeID.Null)) {
+        callBack.doWork();
+      }
+    }
+
+    if (vector.getField().getType().getTypeID() != fieldType.getType().getTypeID()) {
+      final String msg = String.format("Inner vector type mismatch. Requested type: [%s], actual type: [%s]",
+          fieldType.getType().getTypeID(), vector.getField().getType().getTypeID());
+      throw new SchemaChangeRuntimeException(msg);
+    }
+
+    invalidateReader();
+    return new AddOrGetResult<>((T) vector, created);
+  }
+
+  /**
+   * Get the size (number of bytes) of underlying buffers used by this
+   * vector.
+   * @return size of underlying buffers.
+   */
+  @Override
+  public int getBufferSize() {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int offsetBufferSize = (valueCount + 1) * OFFSET_WIDTH;
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    return offsetBufferSize + validityBufferSize + vector.getBufferSize();
+  }
+  
+  @Override
+  public int getBufferSizeFor(int valueCount) {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    long innerVectorValueCount = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+
+    return ((valueCount + 1) * OFFSET_WIDTH) +
+        vector.getBufferSizeFor(checkedCastToInt(innerVectorValueCount)) +
+        validityBufferSize;
+  }
+
+  @Override
+  public Field getField() {
+    return new Field(getName(), fieldType, Collections.singletonList(getDataVector().getField()));
+  }
+
+  @Override
+  public MinorType getMinorType() {
+    return MinorType.LIST;
+  }
+
+  @Override
+  public String getName() {
+    return null;
+  }
+
+  @Override
+  public void clear() {
+    offsetBuffer = releaseBuffer(offsetBuffer);
+    vector.clear();
+    valueCount = 0;
+    super.clear();
+    validityBuffer = releaseBuffer(validityBuffer);
+    lastSet = -1;
+  }
+
+  @Override
+  public void reset() {
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+    vector.reset();
+    valueCount = 0;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+    lastSet = -1;
+  }
+
+  /**
+   * Return the underlying buffers associated with this vector. Note that this doesn't
+   * impact the reference counts for this buffer so it only should be used for in-context
+   * access. Also note that this buffer changes regularly thus
+   * external classes shouldn't hold a reference to it (unless they change it).
+   *
+   * @param clear Whether to clear vector before returning; the buffers will still be refcounted
+   *              but the returned array will be the only reference to them
+   * @return The underlying {@link ArrowBuf buffers} that is used by this
+   *         vector instance.
+   */
+  @Override
+  public ArrowBuf[] getBuffers(boolean clear) {
+    setReaderAndWriterIndex();
+    final ArrowBuf[] buffers;
+    if (getBufferSize() == 0) {
+      buffers = new ArrowBuf[0];
+    } else {
+      List<ArrowBuf> list = new ArrayList<>();
+      list.add(offsetBuffer);
+      list.add(validityBuffer);
+      list.addAll(Arrays.asList(vector.getBuffers(false)));
+      buffers = list.toArray(new ArrowBuf[list.size()]);
+    }
+    if (clear) {
+      for (ArrowBuf buffer : buffers) {
+        buffer.getReferenceManager().retain();
+      }
+      clear();
+    }
+    return buffers;
+  }
+
+  protected void invalidateReader() {
+    reader = null;
+  }
+
+  /**
+   * Get the element in the list vector at a particular index.
+   * @param index position of the element
+   * @return Object at given position
+   */
+  @Override
+  public Object getObject(int index) {
+    if (isSet(index) == 0) {
+      return null;
+    }
+    final List<Object> vals = new JsonStringArrayList<>();
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    final ValueVector vv = getDataVector();
+    for (long i = start; i < end; i++) {
+      vals.add(vv.getObject(checkedCastToInt(i)));
+    }
+
+    return vals;
+  }
+
+  /**
+   * Check if element at given index is null.
+   *
+   * @param index position of element
+   * @return true if element at given index is null, false otherwise
+   */
+  @Override
+  public boolean isNull(int index) {
+    return (isSet(index) == 0);
+  }
+
+  /**
+   * Check if element at given index is empty list.
+   * @param index position of element
+   * @return true if element at given index is empty list or NULL, false otherwise
+   */
+  public boolean isEmpty(int index) {
+    if (isNull(index)) {
+      return true;
+    } else {
+      final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+      final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+      return start == end;
+    }
+  }
+
+  /**
+   * Same as {@link #isNull(int)}.
+   *
+   * @param index  position of element
+   * @return 1 if element at given index is not null, 0 otherwise
+   */
+  public int isSet(int index) {
+    final int byteIndex = index >> 3;
+    final byte b = validityBuffer.getByte(byteIndex);
+    final int bitIndex = index & 7;
+    return (b >> bitIndex) & 0x01;
+  }
+
+  /**
+   * Get the number of elements that are null in the vector.
+   *
+   * @return the number of null elements.
+   */
+  @Override
+  public int getNullCount() {
+    return BitVectorHelper.getNullCount(validityBuffer, valueCount);
+  }
+
+  /**
+   * Get the current value capacity for the vector.
+   * @return number of elements that vector can hold.
+   */
+  @Override
+  public int getValueCapacity() {
+    return getValidityAndOffsetValueCapacity();
+  }
+  
+  protected int getOffsetBufferValueCapacity() {
+    return checkedCastToInt(offsetBuffer.capacity() / OFFSET_WIDTH);
+  }
+  
+  private int getValidityAndOffsetValueCapacity() {
+    final int offsetValueCapacity = Math.max(getOffsetBufferValueCapacity() - 1, 0);
+    return Math.min(offsetValueCapacity, getValidityBufferValueCapacity());
+  }
+
+  private int getValidityBufferValueCapacity() {
+    return capAtMaxInt(validityBuffer.capacity() * 8);
+  }
+
+  /**
+   * Sets the list at index to be not-null.  Reallocates validity buffer if index
+   * is larger than current capacity.
+   */
+  public void setNotNull(int index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+  }
+
+  /**
+   * Start a new value in the list vector.
+   *
+   * @param index index of the value to start
+   */
+  public long startNewValue(long index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    for (long i = lastSet + 1; i <= index; i++) {
+      final long currentOffset = offsetBuffer.getLong(i * OFFSET_WIDTH);
+      offsetBuffer.setLong((i + 1) * OFFSET_WIDTH, currentOffset);
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+    return checkedCastToInt(offsetBuffer.getLong((lastSet + 1) * OFFSET_WIDTH));
+  }
+
+  /**
+   * End the current value.
+   *
+   * @param index index of the value to end
+   * @param size  number of elements in the list that was written
+   */
+  public void endValue(int index, int size) {
+    final long currentOffset = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    offsetBuffer.setLong((index + 1) * OFFSET_WIDTH, currentOffset + size);
+  }
+
+  /**
+   * Sets the value count for the vector.
+   *
+   * @param valueCount   value count
+   */
+  @Override
+  public void setValueCount(int valueCount) {
+    this.valueCount = valueCount;
+    if (valueCount > 0) {
+      while (valueCount > getValidityAndOffsetValueCapacity()) {
+        /* check if validity and offset buffers need to be re-allocated */
+        reallocValidityAndOffsetBuffers();
+      }
+      for (long i = lastSet + 1; i < valueCount; i++) {
+        /* fill the holes with offsets */
+        final long currentOffset = offsetBuffer.getLong(i * OFFSET_WIDTH);
+        offsetBuffer.setLong((i + 1) * OFFSET_WIDTH, currentOffset);
+      }
+    }
+    /* valueCount for the data vector is the current end offset */
+    final long childValueCount = (valueCount == 0) ? 0 :
+            offsetBuffer.getLong((lastSet + 1) * OFFSET_WIDTH);
+    /* set the value count of data vector and this will take care of
+     * checking whether data buffer needs to be reallocated.
+     */
+    vector.setValueCount(checkedCastToInt(childValueCount));

Review comment:
       Could you add a TODO to revisit once 64 bit vectors are supported?

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {
+    final long currentBufferCapacity = offsetBuffer.capacity();
+    long baseSize = offsetAllocationSizeInBytes;
+
+    if (baseSize < currentBufferCapacity) {
+      baseSize = currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    newAllocationSize = Math.min(newAllocationSize, (long) (OFFSET_WIDTH) * Integer.MAX_VALUE);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE || newAllocationSize <= baseSize) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer(newAllocationSize);
+    newBuf.setBytes(0, offsetBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    offsetBuffer.getReferenceManager().release(1);
+    offsetBuffer = newBuf;
+    offsetAllocationSizeInBytes = newAllocationSize;
+  }
+  
+  private void reallocValidityBuffer() {
+    final int currentBufferCapacity = checkedCastToInt(validityBuffer.capacity());
+    long baseSize = validityAllocationSizeInBytes;
+
+    if (baseSize < (long) currentBufferCapacity) {
+      baseSize = (long) currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer((int) newAllocationSize);
+    newBuf.setBytes(0, validityBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    validityBuffer.getReferenceManager().release(1);
+    validityBuffer = newBuf;
+    validityAllocationSizeInBytes = (int) newAllocationSize;
+  }
+
+  /**
+   * Same as {@link #copyFrom(int, int, ValueVector)} except that
+   * it handles the case when the capacity of the vector needs to be expanded
+   * before copy.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFromSafe(int inIndex, int outIndex, ValueVector from) {
+    copyFrom(inIndex, outIndex, from);
+  }
+
+  /**
+   * Copy a cell value from a particular index in source vector to a particular
+   * position in this vector.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFrom(int inIndex, int outIndex, ValueVector from) {
+    Preconditions.checkArgument(this.getMinorType() == from.getMinorType());
+    FieldReader in = from.getReader();
+    in.setPosition(inIndex);
+    UnionLargeListWriter out = getWriter();
+    out.setIndex(outIndex);
+    ComplexCopier.copy(in, out);
+  }
+
+  @Override
+  public UInt4Vector getOffsetVector() {
+    return null;
+  }
+
+  /**
+   * Get the inner data vector for this list vector.
+   * @return data vector
+   */
+  @Override
+  public FieldVector getDataVector() {
+    return vector;
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator) {
+    return getTransferPair(ref, allocator, null);
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator, CallBack callBack) {
+    return new TransferImpl(ref, allocator, callBack);
+  }
+
+  @Override
+  public TransferPair makeTransferPair(ValueVector target) {
+    return new TransferImpl((LargeListVector) target);
+  }
+
+  @Override
+  public long getValidityBufferAddress() {
+    return (validityBuffer.memoryAddress());
+  }
+
+  @Override
+  public long getDataBufferAddress() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public long getOffsetBufferAddress() {
+    return (offsetBuffer.memoryAddress());
+  }
+
+  @Override
+  public ArrowBuf getValidityBuffer() {
+    return validityBuffer;
+  }
+
+  @Override
+  public ArrowBuf getDataBuffer() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public ArrowBuf getOffsetBuffer() {
+    return offsetBuffer;
+  }
+
+  @Override
+  public int getValueCount() {
+    return valueCount;
+  }
+
+  @Override
+  public int hashCode(int index) {
+    return hashCode(index, null);
+  }
+
+  @Override
+  public int hashCode(int index, ArrowBufHasher hasher) {
+    if (isSet(index) == 0) {
+      return ArrowBufPointer.NULL_HASH_CODE;
+    }
+    int hash = 0;
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    for (long i = start; i < end; i++) {
+      hash = ByteFunctionHelpers.combineHash(hash, vector.hashCode(checkedCastToInt(i), hasher));
+    }
+    return hash;
+  }
+
+  @Override
+  public <OUT, IN> OUT accept(VectorVisitor<OUT, IN> visitor, IN value) {
+    return visitor.visit(this, value);
+  }
+
+  public UnionLargeListWriter getWriter() {
+    return new UnionLargeListWriter(this);
+  }
+
+  protected void replaceDataVector(FieldVector v) {
+    vector.clear();
+    vector = v;
+  }
+
+  @Override
+  public UnionVector promoteToUnion() {
+    UnionVector vector = new UnionVector("$data$", allocator, callBack);
+    replaceDataVector(vector);
+    invalidateReader();
+    if (callBack != null) {
+      callBack.doWork();
+    }
+    return vector;
+  }
+
+  private class TransferImpl implements TransferPair {
+
+    LargeListVector to;
+    TransferPair dataTransferPair;
+
+    public TransferImpl(String name, BufferAllocator allocator, CallBack callBack) {
+      this(new LargeListVector(name, allocator, fieldType, callBack));
+    }
+
+    public TransferImpl(LargeListVector to) {
+      this.to = to;
+      to.addOrGetVector(vector.getField().getFieldType());
+      if (to.getDataVector() instanceof ZeroVector) {
+        to.addOrGetVector(vector.getField().getFieldType());
+      }
+      dataTransferPair = getDataVector().makeTransferPair(to.getDataVector());
+    }
+
+    /**
+     * Transfer this vector'data to another vector. The memory associated
+     * with this vector is transferred to the allocator of target vector
+     * for accounting and management purposes.
+     */
+    @Override
+    public void transfer() {
+      to.clear();
+      dataTransferPair.transfer();
+      to.validityBuffer = transferBuffer(validityBuffer, to.allocator);
+      to.offsetBuffer = transferBuffer(offsetBuffer, to.allocator);
+      to.lastSet = lastSet;
+      if (valueCount > 0) {
+        to.setValueCount(valueCount);
+      }
+      clear();
+    }
+
+    /**
+     * Slice this vector at desired index and length and transfer the
+     * corresponding data to the target vector.
+     * @param startIndex start position of the split in source vector.
+     * @param length length of the split.
+     */
+    @Override
+    public void splitAndTransfer(int startIndex, int length) {
+      Preconditions.checkArgument(startIndex >= 0 && length >= 0 && startIndex + length <= valueCount,
+          "Invalid parameters startIndex: %s, length: %s for valueCount: %s", startIndex, length, valueCount);
+      final long startPoint = offsetBuffer.getLong(startIndex * OFFSET_WIDTH);
+      final long sliceLength = offsetBuffer.getLong((startIndex + length) * OFFSET_WIDTH) - startPoint;
+      to.clear();
+      to.allocateOffsetBuffer((length + 1) * OFFSET_WIDTH);
+      /* splitAndTransfer offset buffer */
+      for (int i = 0; i < length + 1; i++) {
+        final long relativeOffset = offsetBuffer.getLong((startIndex + i) * OFFSET_WIDTH) - startPoint;
+        to.offsetBuffer.setLong(i * OFFSET_WIDTH, relativeOffset);
+      }
+      /* splitAndTransfer validity buffer */
+      splitAndTransferValidityBuffer(startIndex, length, to);
+      /* splitAndTransfer data buffer */
+      dataTransferPair.splitAndTransfer(checkedCastToInt(startPoint), checkedCastToInt(sliceLength));
+      to.lastSet = length - 1;
+      to.setValueCount(length);
+    }
+
+    /*
+     * transfer the validity.
+     */
+    private void splitAndTransferValidityBuffer(int startIndex, int length, LargeListVector target) {
+      int firstByteSource = BitVectorHelper.byteIndex(startIndex);
+      int lastByteSource = BitVectorHelper.byteIndex(valueCount - 1);
+      int byteSizeTarget = getValidityBufferSizeFromCount(length);
+      int offset = startIndex % 8;
+
+      if (length > 0) {
+        if (offset == 0) {
+          // slice
+          if (target.validityBuffer != null) {
+            target.validityBuffer.getReferenceManager().release();
+          }
+          target.validityBuffer = validityBuffer.slice(firstByteSource, byteSizeTarget);
+          target.validityBuffer.getReferenceManager().retain(1);
+        } else {
+          /* Copy data
+           * When the first bit starts from the middle of a byte (offset != 0),
+           * copy data from src BitVector.
+           * Each byte in the target is composed by a part in i-th byte,
+           * another part in (i+1)-th byte.
+           */
+          target.allocateValidityBuffer(byteSizeTarget);
+
+          for (int i = 0; i < byteSizeTarget - 1; i++) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer, firstByteSource + i, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer, firstByteSource + i + 1, offset);
+
+            target.validityBuffer.setByte(i, (b1 + b2));
+          }
+
+          /* Copying the last piece is done in the following manner:
+           * if the source vector has 1 or more bytes remaining, we copy
+           * the last piece as a byte formed by shifting data
+           * from the current byte and the next byte.
+           *
+           * if the source vector has no more bytes remaining
+           * (we are at the last byte), we copy the last piece as a byte
+           * by shifting data from the current byte.
+           */
+          if ((firstByteSource + byteSizeTarget - 1) < lastByteSource) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer,
+                    firstByteSource + byteSizeTarget, offset);
+
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1 + b2);
+          } else {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1);
+          }
+        }
+      }
+    }
+
+    @Override
+    public ValueVector getTo() {
+      return to;
+    }
+
+    @Override
+    public void copyValueSafe(int from, int to) {
+      this.to.copyFrom(from, to, LargeListVector.this);
+    }
+  }
+
+  @Override
+  public UnionLargeListReader getReader() {
+    if (reader == null) {
+      reader = new UnionLargeListReader(this);
+    }
+    return reader;
+  }
+
+  /**
+   * Initialize the data vector (and execute callback) if it hasn't already been done,
+   * returns the data vector.
+   */
+  public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType) {
+    boolean created = false;
+    if (vector instanceof NullVector) {
+      vector = fieldType.createNewSingleVector(defaultDataVectorName, allocator, callBack);
+      // returned vector must have the same field
+      created = true;
+      if (callBack != null &&
+          // not a schema change if changing from ZeroVector to ZeroVector
+          (fieldType.getType().getTypeID() != ArrowType.ArrowTypeID.Null)) {
+        callBack.doWork();
+      }
+    }
+
+    if (vector.getField().getType().getTypeID() != fieldType.getType().getTypeID()) {
+      final String msg = String.format("Inner vector type mismatch. Requested type: [%s], actual type: [%s]",
+          fieldType.getType().getTypeID(), vector.getField().getType().getTypeID());
+      throw new SchemaChangeRuntimeException(msg);
+    }
+
+    invalidateReader();
+    return new AddOrGetResult<>((T) vector, created);
+  }
+
+  /**
+   * Get the size (number of bytes) of underlying buffers used by this
+   * vector.
+   * @return size of underlying buffers.
+   */
+  @Override
+  public int getBufferSize() {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int offsetBufferSize = (valueCount + 1) * OFFSET_WIDTH;
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    return offsetBufferSize + validityBufferSize + vector.getBufferSize();
+  }
+  
+  @Override
+  public int getBufferSizeFor(int valueCount) {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    long innerVectorValueCount = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+
+    return ((valueCount + 1) * OFFSET_WIDTH) +
+        vector.getBufferSizeFor(checkedCastToInt(innerVectorValueCount)) +
+        validityBufferSize;
+  }
+
+  @Override
+  public Field getField() {
+    return new Field(getName(), fieldType, Collections.singletonList(getDataVector().getField()));
+  }
+
+  @Override
+  public MinorType getMinorType() {
+    return MinorType.LIST;
+  }
+
+  @Override
+  public String getName() {
+    return null;
+  }
+
+  @Override
+  public void clear() {
+    offsetBuffer = releaseBuffer(offsetBuffer);
+    vector.clear();
+    valueCount = 0;
+    super.clear();
+    validityBuffer = releaseBuffer(validityBuffer);
+    lastSet = -1;
+  }
+
+  @Override
+  public void reset() {
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+    vector.reset();
+    valueCount = 0;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+    lastSet = -1;
+  }
+
+  /**
+   * Return the underlying buffers associated with this vector. Note that this doesn't
+   * impact the reference counts for this buffer so it only should be used for in-context
+   * access. Also note that this buffer changes regularly thus
+   * external classes shouldn't hold a reference to it (unless they change it).
+   *
+   * @param clear Whether to clear vector before returning; the buffers will still be refcounted
+   *              but the returned array will be the only reference to them
+   * @return The underlying {@link ArrowBuf buffers} that is used by this
+   *         vector instance.
+   */
+  @Override
+  public ArrowBuf[] getBuffers(boolean clear) {
+    setReaderAndWriterIndex();
+    final ArrowBuf[] buffers;
+    if (getBufferSize() == 0) {
+      buffers = new ArrowBuf[0];
+    } else {
+      List<ArrowBuf> list = new ArrayList<>();
+      list.add(offsetBuffer);
+      list.add(validityBuffer);
+      list.addAll(Arrays.asList(vector.getBuffers(false)));
+      buffers = list.toArray(new ArrowBuf[list.size()]);
+    }
+    if (clear) {
+      for (ArrowBuf buffer : buffers) {
+        buffer.getReferenceManager().retain();
+      }
+      clear();
+    }
+    return buffers;
+  }
+
+  protected void invalidateReader() {
+    reader = null;
+  }
+
+  /**
+   * Get the element in the list vector at a particular index.
+   * @param index position of the element
+   * @return Object at given position
+   */
+  @Override
+  public Object getObject(int index) {
+    if (isSet(index) == 0) {
+      return null;
+    }
+    final List<Object> vals = new JsonStringArrayList<>();
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    final ValueVector vv = getDataVector();
+    for (long i = start; i < end; i++) {
+      vals.add(vv.getObject(checkedCastToInt(i)));
+    }
+
+    return vals;
+  }
+
+  /**
+   * Check if element at given index is null.
+   *
+   * @param index position of element
+   * @return true if element at given index is null, false otherwise
+   */
+  @Override
+  public boolean isNull(int index) {
+    return (isSet(index) == 0);
+  }
+
+  /**
+   * Check if element at given index is empty list.
+   * @param index position of element
+   * @return true if element at given index is empty list or NULL, false otherwise
+   */
+  public boolean isEmpty(int index) {
+    if (isNull(index)) {
+      return true;
+    } else {
+      final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+      final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+      return start == end;
+    }
+  }
+
+  /**
+   * Same as {@link #isNull(int)}.
+   *
+   * @param index  position of element
+   * @return 1 if element at given index is not null, 0 otherwise
+   */
+  public int isSet(int index) {
+    final int byteIndex = index >> 3;
+    final byte b = validityBuffer.getByte(byteIndex);
+    final int bitIndex = index & 7;
+    return (b >> bitIndex) & 0x01;
+  }
+
+  /**
+   * Get the number of elements that are null in the vector.
+   *
+   * @return the number of null elements.
+   */
+  @Override
+  public int getNullCount() {
+    return BitVectorHelper.getNullCount(validityBuffer, valueCount);
+  }
+
+  /**
+   * Get the current value capacity for the vector.
+   * @return number of elements that vector can hold.
+   */
+  @Override
+  public int getValueCapacity() {
+    return getValidityAndOffsetValueCapacity();
+  }
+  
+  protected int getOffsetBufferValueCapacity() {
+    return checkedCastToInt(offsetBuffer.capacity() / OFFSET_WIDTH);
+  }
+  
+  private int getValidityAndOffsetValueCapacity() {
+    final int offsetValueCapacity = Math.max(getOffsetBufferValueCapacity() - 1, 0);
+    return Math.min(offsetValueCapacity, getValidityBufferValueCapacity());
+  }
+
+  private int getValidityBufferValueCapacity() {
+    return capAtMaxInt(validityBuffer.capacity() * 8);
+  }
+
+  /**
+   * Sets the list at index to be not-null.  Reallocates validity buffer if index
+   * is larger than current capacity.
+   */
+  public void setNotNull(int index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+  }
+
+  /**
+   * Start a new value in the list vector.
+   *
+   * @param index index of the value to start
+   */
+  public long startNewValue(long index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    for (long i = lastSet + 1; i <= index; i++) {
+      final long currentOffset = offsetBuffer.getLong(i * OFFSET_WIDTH);
+      offsetBuffer.setLong((i + 1) * OFFSET_WIDTH, currentOffset);
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+    return checkedCastToInt(offsetBuffer.getLong((lastSet + 1) * OFFSET_WIDTH));
+  }
+
+  /**
+   * End the current value.
+   *
+   * @param index index of the value to end
+   * @param size  number of elements in the list that was written
+   */
+  public void endValue(int index, int size) {
+    final long currentOffset = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    offsetBuffer.setLong((index + 1) * OFFSET_WIDTH, currentOffset + size);
+  }
+
+  /**
+   * Sets the value count for the vector.
+   *
+   * @param valueCount   value count
+   */
+  @Override
+  public void setValueCount(int valueCount) {
+    this.valueCount = valueCount;
+    if (valueCount > 0) {
+      while (valueCount > getValidityAndOffsetValueCapacity()) {
+        /* check if validity and offset buffers need to be re-allocated */
+        reallocValidityAndOffsetBuffers();
+      }
+      for (long i = lastSet + 1; i < valueCount; i++) {
+        /* fill the holes with offsets */
+        final long currentOffset = offsetBuffer.getLong(i * OFFSET_WIDTH);
+        offsetBuffer.setLong((i + 1) * OFFSET_WIDTH, currentOffset);
+      }
+    }
+    /* valueCount for the data vector is the current end offset */
+    final long childValueCount = (valueCount == 0) ? 0 :
+            offsetBuffer.getLong((lastSet + 1) * OFFSET_WIDTH);
+    /* set the value count of data vector and this will take care of
+     * checking whether data buffer needs to be reallocated.
+     */
+    vector.setValueCount(checkedCastToInt(childValueCount));
+  }
+
+  public void setLastSet(int value) {
+    lastSet = value;
+  }
+
+  public long getLastSet() {
+    return lastSet;
+  }
+
+  @Override
+  public int getElementStartIndex(int index) {
+    return checkedCastToInt(offsetBuffer.getLong(index * OFFSET_WIDTH));
+  }
+
+  @Override
+  public int getElementEndIndex(int index) {

Review comment:
       same here

##########
File path: java/vector/src/main/java/org/apache/arrow/vector/complex/LargeListVector.java
##########
@@ -0,0 +1,991 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.vector.complex;
+
+import static java.util.Collections.singletonList;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.capAtMaxInt;
+import static org.apache.arrow.memory.util.LargeMemoryUtil.checkedCastToInt;
+import static org.apache.arrow.util.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.arrow.memory.ArrowBuf;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.OutOfMemoryException;
+import org.apache.arrow.memory.util.ArrowBufPointer;
+import org.apache.arrow.memory.util.ByteFunctionHelpers;
+import org.apache.arrow.memory.util.CommonUtil;
+import org.apache.arrow.memory.util.hash.ArrowBufHasher;
+import org.apache.arrow.util.Preconditions;
+import org.apache.arrow.vector.AddOrGetResult;
+import org.apache.arrow.vector.BaseFixedWidthVector;
+import org.apache.arrow.vector.BaseValueVector;
+import org.apache.arrow.vector.BaseVariableWidthVector;
+import org.apache.arrow.vector.BitVectorHelper;
+import org.apache.arrow.vector.BufferBacked;
+import org.apache.arrow.vector.DensityAwareVector;
+import org.apache.arrow.vector.FieldVector;
+import org.apache.arrow.vector.NullVector;
+import org.apache.arrow.vector.UInt4Vector;
+import org.apache.arrow.vector.ValueVector;
+import org.apache.arrow.vector.ZeroVector;
+import org.apache.arrow.vector.compare.VectorVisitor;
+import org.apache.arrow.vector.complex.impl.ComplexCopier;
+import org.apache.arrow.vector.complex.impl.UnionLargeListReader;
+import org.apache.arrow.vector.complex.impl.UnionLargeListWriter;
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.ipc.message.ArrowFieldNode;
+import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.util.CallBack;
+import org.apache.arrow.vector.util.JsonStringArrayList;
+import org.apache.arrow.vector.util.OversizedAllocationException;
+import org.apache.arrow.vector.util.SchemaChangeRuntimeException;
+import org.apache.arrow.vector.util.TransferPair;
+
+/**
+ * A list vector contains lists of a specific type of elements.  Its structure contains 3 elements.
+ * <ol>
+ * <li>A validity buffer.</li>
+ * <li> An offset buffer, that denotes lists boundaries. </li>
+ * <li> A child data vector that contains the elements of lists. </li>
+ * </ol>
+ *
+ * This is the LargeList variant of list, it has a 64-bit wide offset
+ *
+ * <p>
+ *   todo review checkedCastToInt usage in this class.
+ *   Once int64 indexed vectors are supported these checks aren't needed.
+ * </p>
+ */
+public class LargeListVector extends BaseValueVector implements RepeatedValueVector, BaseListVector, PromotableVector {
+
+  public static LargeListVector empty(String name, BufferAllocator allocator) {
+    return new LargeListVector(name, allocator, FieldType.nullable(ArrowType.LargeList.INSTANCE), null);
+  }
+
+  public static final FieldVector DEFAULT_DATA_VECTOR = ZeroVector.INSTANCE;
+  public static final String DATA_VECTOR_NAME = "$data$";
+
+  public static final byte OFFSET_WIDTH = 8;
+  protected ArrowBuf offsetBuffer;
+  protected FieldVector vector;
+  protected final CallBack callBack;
+  protected int valueCount;
+  protected long offsetAllocationSizeInBytes = INITIAL_VALUE_ALLOCATION * OFFSET_WIDTH;
+  private final String name;
+
+  protected String defaultDataVectorName = DATA_VECTOR_NAME;
+  protected ArrowBuf validityBuffer;
+  protected UnionLargeListReader reader;
+  private final FieldType fieldType;
+  private int validityAllocationSizeInBytes;
+
+  /**
+   * The maximum index that is actually set.
+   */
+  private long lastSet;
+
+  /**
+   * Constructs a new instance.
+   *
+   * @param name The name of the instance.
+   * @param allocator The allocator to use for allocating/reallocating buffers.
+   * @param fieldType The type of this list.
+   * @param callBack A schema change callback.
+   */
+  public LargeListVector(String name, BufferAllocator allocator, FieldType fieldType, CallBack callBack) {
+    super(allocator);
+    this.name = name;
+    this.validityBuffer = allocator.getEmpty();
+    this.fieldType = checkNotNull(fieldType);
+    this.callBack = callBack;
+    this.validityAllocationSizeInBytes = getValidityBufferSizeFromCount(INITIAL_VALUE_ALLOCATION);
+    this.lastSet = -1;
+    this.offsetBuffer = allocator.getEmpty();
+    this.vector = vector == null ? DEFAULT_DATA_VECTOR : vector;
+    this.valueCount = 0;
+  }
+
+  @Override
+  public void initializeChildrenFromFields(List<Field> children) {
+    if (children.size() != 1) {
+      throw new IllegalArgumentException("Lists have only one child. Found: " + children);
+    }
+    Field field = children.get(0);
+    AddOrGetResult<FieldVector> addOrGetVector = addOrGetVector(field.getFieldType());
+    if (!addOrGetVector.isCreated()) {
+      throw new IllegalArgumentException("Child vector already existed: " + addOrGetVector.getVector());
+    }
+
+    addOrGetVector.getVector().initializeChildrenFromFields(field.getChildren());
+  }
+
+  @Override
+  public void setInitialCapacity(int numRecords) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    offsetAllocationSizeInBytes = (long) (numRecords + 1) * OFFSET_WIDTH;
+    if (vector instanceof BaseFixedWidthVector || vector instanceof BaseVariableWidthVector) {
+      vector.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
+    } else {
+      vector.setInitialCapacity(numRecords);
+    }
+  }
+
+  /**
+   * Specialized version of setInitialCapacity() for ListVector. This is
+   * used by some callers when they want to explicitly control and be
+   * conservative about memory allocated for inner data vector. This is
+   * very useful when we are working with memory constraints for a query
+   * and have a fixed amount of memory reserved for the record batch. In
+   * such cases, we are likely to face OOM or related problems when
+   * we reserve memory for a record batch with value count x and
+   * do setInitialCapacity(x) such that each vector allocates only
+   * what is necessary and not the default amount but the multiplier
+   * forces the memory requirement to go beyond what was needed.
+   *
+   * @param numRecords value count
+   * @param density density of ListVector. Density is the average size of
+   *                list per position in the List vector. For example, a
+   *                density value of 10 implies each position in the list
+   *                vector has a list of 10 values.
+   *                A density value of 0.1 implies out of 10 positions in
+   *                the list vector, 1 position has a list of size 1 and
+   *                remaining positions are null (no lists) or empty lists.
+   *                This helps in tightly controlling the memory we provision
+   *                for inner data vector.
+   */
+  @Override
+  public void setInitialCapacity(int numRecords, double density) {
+    validityAllocationSizeInBytes = getValidityBufferSizeFromCount(numRecords);
+    if ((numRecords * density) >= Integer.MAX_VALUE) {
+      throw new OversizedAllocationException("Requested amount of memory is more than max allowed");
+    }
+
+    offsetAllocationSizeInBytes = (numRecords + 1) * OFFSET_WIDTH;
+
+    int innerValueCapacity = Math.max((int) (numRecords * density), 1);
+
+    if (vector instanceof DensityAwareVector) {
+      ((DensityAwareVector) vector).setInitialCapacity(innerValueCapacity, density);
+    } else {
+      vector.setInitialCapacity(innerValueCapacity);
+    }
+  }
+
+  /**
+   * Get the density of this ListVector.
+   * @return density
+   */
+  public double getDensity() {
+    if (valueCount == 0) {
+      return 0.0D;
+    }
+    final long startOffset = offsetBuffer.getLong(0);
+    final long endOffset = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+    final double totalListSize = endOffset - startOffset;
+    return totalListSize / valueCount;
+  }
+
+  @Override
+  public List<FieldVector> getChildrenFromFields() {
+    return singletonList(getDataVector());
+  }
+
+  /**
+   * Load the buffers of this vector with provided source buffers.
+   * The caller manages the source buffers and populates them before invoking
+   * this method.
+   * @param fieldNode  the fieldNode indicating the value count
+   * @param ownBuffers the buffers for this Field (own buffers only, children not included)
+   */
+  @Override
+  public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
+    if (ownBuffers.size() != 2) {
+      throw new IllegalArgumentException("Illegal buffer count, expected " + 2 + ", got: " + ownBuffers.size());
+    }
+
+    ArrowBuf bitBuffer = ownBuffers.get(0);
+    ArrowBuf offBuffer = ownBuffers.get(1);
+
+    validityBuffer.getReferenceManager().release();
+    validityBuffer = BitVectorHelper.loadValidityBuffer(fieldNode, bitBuffer, allocator);
+    offsetBuffer.getReferenceManager().release();
+    offsetBuffer = offBuffer.getReferenceManager().retain(offBuffer, allocator);
+
+    validityAllocationSizeInBytes = checkedCastToInt(validityBuffer.capacity());
+    offsetAllocationSizeInBytes = offsetBuffer.capacity();
+
+    lastSet = fieldNode.getLength() - 1;
+    valueCount = fieldNode.getLength();
+  }
+
+  /**
+   * Get the buffers belonging to this vector.
+   * @return the inner buffers.
+   */
+  @Override
+  public List<ArrowBuf> getFieldBuffers() {
+    List<ArrowBuf> result = new ArrayList<>(2);
+    setReaderAndWriterIndex();
+    result.add(validityBuffer);
+    result.add(offsetBuffer);
+
+    return result;
+  }
+
+  /**
+   * Set the reader and writer indexes for the inner buffers.
+   */
+  private void setReaderAndWriterIndex() {
+    validityBuffer.readerIndex(0);
+    offsetBuffer.readerIndex(0);
+    if (valueCount == 0) {
+      validityBuffer.writerIndex(0);
+      offsetBuffer.writerIndex(0);
+    } else {
+      validityBuffer.writerIndex(getValidityBufferSizeFromCount(valueCount));
+      offsetBuffer.writerIndex((valueCount + 1) * OFFSET_WIDTH);
+    }
+  }
+
+  @Override
+  @Deprecated
+  public List<BufferBacked> getFieldInnerVectors() {
+    throw new UnsupportedOperationException("There are no inner vectors. Use getFieldBuffers");
+  }
+
+  /**
+   * Same as {@link #allocateNewSafe()}.
+   */
+  @Override
+  public void allocateNew() throws OutOfMemoryException {
+    if (!allocateNewSafe()) {
+      throw new OutOfMemoryException("Failure while allocating memory");
+    }
+  }
+
+  /**
+   * Allocate memory for the vector. We internally use a default value count
+   * of 4096 to allocate memory for at least these many elements in the
+   * vector.
+   *
+   * @return false if memory allocation fails, true otherwise.
+   */
+  public boolean allocateNewSafe() {
+    boolean success = false;
+    try {
+      /* we are doing a new allocation -- release the current buffers */
+      clear();
+      /* allocate validity buffer */
+      allocateValidityBuffer(validityAllocationSizeInBytes);
+      /* allocate offset and data buffer */
+      boolean dataAlloc = false;
+      try {
+        allocateOffsetBuffer(offsetAllocationSizeInBytes);
+        dataAlloc = vector.allocateNewSafe();
+      } catch (Exception e) {
+        e.printStackTrace();
+        clear();
+        return false;
+      } finally {
+        if (!dataAlloc) {
+          clear();
+        }
+      }
+      success = dataAlloc;
+    } finally {
+      if (!success) {
+        clear();
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private void allocateValidityBuffer(final long size) {
+    final int curSize = (int) size;
+    validityBuffer = allocator.buffer(curSize);
+    validityBuffer.readerIndex(0);
+    validityAllocationSizeInBytes = curSize;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+  }
+  
+  protected void allocateOffsetBuffer(final long size) {
+    final int curSize = (int) size;
+    offsetBuffer = allocator.buffer(curSize);
+    offsetBuffer.readerIndex(0);
+    offsetAllocationSizeInBytes = curSize;
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+  }
+  
+  /**
+   * Resize the vector to increase the capacity. The internal behavior is to
+   * double the current value capacity.
+   */
+  @Override
+  public void reAlloc() {
+    /* reallocate the validity buffer */
+    reallocValidityBuffer();
+    /* reallocate the offset and data */
+    reallocOffsetBuffer();
+    vector.reAlloc();
+  }
+
+  private void reallocValidityAndOffsetBuffers() {
+    reallocOffsetBuffer();
+    reallocValidityBuffer();
+  }
+  
+  protected void reallocOffsetBuffer() {
+    final long currentBufferCapacity = offsetBuffer.capacity();
+    long baseSize = offsetAllocationSizeInBytes;
+
+    if (baseSize < currentBufferCapacity) {
+      baseSize = currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    newAllocationSize = Math.min(newAllocationSize, (long) (OFFSET_WIDTH) * Integer.MAX_VALUE);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE || newAllocationSize <= baseSize) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer(newAllocationSize);
+    newBuf.setBytes(0, offsetBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    offsetBuffer.getReferenceManager().release(1);
+    offsetBuffer = newBuf;
+    offsetAllocationSizeInBytes = newAllocationSize;
+  }
+  
+  private void reallocValidityBuffer() {
+    final int currentBufferCapacity = checkedCastToInt(validityBuffer.capacity());
+    long baseSize = validityAllocationSizeInBytes;
+
+    if (baseSize < (long) currentBufferCapacity) {
+      baseSize = (long) currentBufferCapacity;
+    }
+
+    long newAllocationSize = baseSize * 2L;
+    newAllocationSize = CommonUtil.nextPowerOfTwo(newAllocationSize);
+    assert newAllocationSize >= 1;
+
+    if (newAllocationSize > MAX_ALLOCATION_SIZE) {
+      throw new OversizedAllocationException("Unable to expand the buffer");
+    }
+
+    final ArrowBuf newBuf = allocator.buffer((int) newAllocationSize);
+    newBuf.setBytes(0, validityBuffer, 0, currentBufferCapacity);
+    newBuf.setZero(currentBufferCapacity, newBuf.capacity() - currentBufferCapacity);
+    validityBuffer.getReferenceManager().release(1);
+    validityBuffer = newBuf;
+    validityAllocationSizeInBytes = (int) newAllocationSize;
+  }
+
+  /**
+   * Same as {@link #copyFrom(int, int, ValueVector)} except that
+   * it handles the case when the capacity of the vector needs to be expanded
+   * before copy.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFromSafe(int inIndex, int outIndex, ValueVector from) {
+    copyFrom(inIndex, outIndex, from);
+  }
+
+  /**
+   * Copy a cell value from a particular index in source vector to a particular
+   * position in this vector.
+   * @param inIndex position to copy from in source vector
+   * @param outIndex position to copy to in this vector
+   * @param from source vector
+   */
+  @Override
+  public void copyFrom(int inIndex, int outIndex, ValueVector from) {
+    Preconditions.checkArgument(this.getMinorType() == from.getMinorType());
+    FieldReader in = from.getReader();
+    in.setPosition(inIndex);
+    UnionLargeListWriter out = getWriter();
+    out.setIndex(outIndex);
+    ComplexCopier.copy(in, out);
+  }
+
+  @Override
+  public UInt4Vector getOffsetVector() {
+    return null;
+  }
+
+  /**
+   * Get the inner data vector for this list vector.
+   * @return data vector
+   */
+  @Override
+  public FieldVector getDataVector() {
+    return vector;
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator) {
+    return getTransferPair(ref, allocator, null);
+  }
+
+  @Override
+  public TransferPair getTransferPair(String ref, BufferAllocator allocator, CallBack callBack) {
+    return new TransferImpl(ref, allocator, callBack);
+  }
+
+  @Override
+  public TransferPair makeTransferPair(ValueVector target) {
+    return new TransferImpl((LargeListVector) target);
+  }
+
+  @Override
+  public long getValidityBufferAddress() {
+    return (validityBuffer.memoryAddress());
+  }
+
+  @Override
+  public long getDataBufferAddress() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public long getOffsetBufferAddress() {
+    return (offsetBuffer.memoryAddress());
+  }
+
+  @Override
+  public ArrowBuf getValidityBuffer() {
+    return validityBuffer;
+  }
+
+  @Override
+  public ArrowBuf getDataBuffer() {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public ArrowBuf getOffsetBuffer() {
+    return offsetBuffer;
+  }
+
+  @Override
+  public int getValueCount() {
+    return valueCount;
+  }
+
+  @Override
+  public int hashCode(int index) {
+    return hashCode(index, null);
+  }
+
+  @Override
+  public int hashCode(int index, ArrowBufHasher hasher) {
+    if (isSet(index) == 0) {
+      return ArrowBufPointer.NULL_HASH_CODE;
+    }
+    int hash = 0;
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    for (long i = start; i < end; i++) {
+      hash = ByteFunctionHelpers.combineHash(hash, vector.hashCode(checkedCastToInt(i), hasher));
+    }
+    return hash;
+  }
+
+  @Override
+  public <OUT, IN> OUT accept(VectorVisitor<OUT, IN> visitor, IN value) {
+    return visitor.visit(this, value);
+  }
+
+  public UnionLargeListWriter getWriter() {
+    return new UnionLargeListWriter(this);
+  }
+
+  protected void replaceDataVector(FieldVector v) {
+    vector.clear();
+    vector = v;
+  }
+
+  @Override
+  public UnionVector promoteToUnion() {
+    UnionVector vector = new UnionVector("$data$", allocator, callBack);
+    replaceDataVector(vector);
+    invalidateReader();
+    if (callBack != null) {
+      callBack.doWork();
+    }
+    return vector;
+  }
+
+  private class TransferImpl implements TransferPair {
+
+    LargeListVector to;
+    TransferPair dataTransferPair;
+
+    public TransferImpl(String name, BufferAllocator allocator, CallBack callBack) {
+      this(new LargeListVector(name, allocator, fieldType, callBack));
+    }
+
+    public TransferImpl(LargeListVector to) {
+      this.to = to;
+      to.addOrGetVector(vector.getField().getFieldType());
+      if (to.getDataVector() instanceof ZeroVector) {
+        to.addOrGetVector(vector.getField().getFieldType());
+      }
+      dataTransferPair = getDataVector().makeTransferPair(to.getDataVector());
+    }
+
+    /**
+     * Transfer this vector'data to another vector. The memory associated
+     * with this vector is transferred to the allocator of target vector
+     * for accounting and management purposes.
+     */
+    @Override
+    public void transfer() {
+      to.clear();
+      dataTransferPair.transfer();
+      to.validityBuffer = transferBuffer(validityBuffer, to.allocator);
+      to.offsetBuffer = transferBuffer(offsetBuffer, to.allocator);
+      to.lastSet = lastSet;
+      if (valueCount > 0) {
+        to.setValueCount(valueCount);
+      }
+      clear();
+    }
+
+    /**
+     * Slice this vector at desired index and length and transfer the
+     * corresponding data to the target vector.
+     * @param startIndex start position of the split in source vector.
+     * @param length length of the split.
+     */
+    @Override
+    public void splitAndTransfer(int startIndex, int length) {
+      Preconditions.checkArgument(startIndex >= 0 && length >= 0 && startIndex + length <= valueCount,
+          "Invalid parameters startIndex: %s, length: %s for valueCount: %s", startIndex, length, valueCount);
+      final long startPoint = offsetBuffer.getLong(startIndex * OFFSET_WIDTH);
+      final long sliceLength = offsetBuffer.getLong((startIndex + length) * OFFSET_WIDTH) - startPoint;
+      to.clear();
+      to.allocateOffsetBuffer((length + 1) * OFFSET_WIDTH);
+      /* splitAndTransfer offset buffer */
+      for (int i = 0; i < length + 1; i++) {
+        final long relativeOffset = offsetBuffer.getLong((startIndex + i) * OFFSET_WIDTH) - startPoint;
+        to.offsetBuffer.setLong(i * OFFSET_WIDTH, relativeOffset);
+      }
+      /* splitAndTransfer validity buffer */
+      splitAndTransferValidityBuffer(startIndex, length, to);
+      /* splitAndTransfer data buffer */
+      dataTransferPair.splitAndTransfer(checkedCastToInt(startPoint), checkedCastToInt(sliceLength));
+      to.lastSet = length - 1;
+      to.setValueCount(length);
+    }
+
+    /*
+     * transfer the validity.
+     */
+    private void splitAndTransferValidityBuffer(int startIndex, int length, LargeListVector target) {
+      int firstByteSource = BitVectorHelper.byteIndex(startIndex);
+      int lastByteSource = BitVectorHelper.byteIndex(valueCount - 1);
+      int byteSizeTarget = getValidityBufferSizeFromCount(length);
+      int offset = startIndex % 8;
+
+      if (length > 0) {
+        if (offset == 0) {
+          // slice
+          if (target.validityBuffer != null) {
+            target.validityBuffer.getReferenceManager().release();
+          }
+          target.validityBuffer = validityBuffer.slice(firstByteSource, byteSizeTarget);
+          target.validityBuffer.getReferenceManager().retain(1);
+        } else {
+          /* Copy data
+           * When the first bit starts from the middle of a byte (offset != 0),
+           * copy data from src BitVector.
+           * Each byte in the target is composed by a part in i-th byte,
+           * another part in (i+1)-th byte.
+           */
+          target.allocateValidityBuffer(byteSizeTarget);
+
+          for (int i = 0; i < byteSizeTarget - 1; i++) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer, firstByteSource + i, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer, firstByteSource + i + 1, offset);
+
+            target.validityBuffer.setByte(i, (b1 + b2));
+          }
+
+          /* Copying the last piece is done in the following manner:
+           * if the source vector has 1 or more bytes remaining, we copy
+           * the last piece as a byte formed by shifting data
+           * from the current byte and the next byte.
+           *
+           * if the source vector has no more bytes remaining
+           * (we are at the last byte), we copy the last piece as a byte
+           * by shifting data from the current byte.
+           */
+          if ((firstByteSource + byteSizeTarget - 1) < lastByteSource) {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            byte b2 = BitVectorHelper.getBitsFromNextByte(validityBuffer,
+                    firstByteSource + byteSizeTarget, offset);
+
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1 + b2);
+          } else {
+            byte b1 = BitVectorHelper.getBitsFromCurrentByte(validityBuffer,
+                    firstByteSource + byteSizeTarget - 1, offset);
+            target.validityBuffer.setByte(byteSizeTarget - 1, b1);
+          }
+        }
+      }
+    }
+
+    @Override
+    public ValueVector getTo() {
+      return to;
+    }
+
+    @Override
+    public void copyValueSafe(int from, int to) {
+      this.to.copyFrom(from, to, LargeListVector.this);
+    }
+  }
+
+  @Override
+  public UnionLargeListReader getReader() {
+    if (reader == null) {
+      reader = new UnionLargeListReader(this);
+    }
+    return reader;
+  }
+
+  /**
+   * Initialize the data vector (and execute callback) if it hasn't already been done,
+   * returns the data vector.
+   */
+  public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType) {
+    boolean created = false;
+    if (vector instanceof NullVector) {
+      vector = fieldType.createNewSingleVector(defaultDataVectorName, allocator, callBack);
+      // returned vector must have the same field
+      created = true;
+      if (callBack != null &&
+          // not a schema change if changing from ZeroVector to ZeroVector
+          (fieldType.getType().getTypeID() != ArrowType.ArrowTypeID.Null)) {
+        callBack.doWork();
+      }
+    }
+
+    if (vector.getField().getType().getTypeID() != fieldType.getType().getTypeID()) {
+      final String msg = String.format("Inner vector type mismatch. Requested type: [%s], actual type: [%s]",
+          fieldType.getType().getTypeID(), vector.getField().getType().getTypeID());
+      throw new SchemaChangeRuntimeException(msg);
+    }
+
+    invalidateReader();
+    return new AddOrGetResult<>((T) vector, created);
+  }
+
+  /**
+   * Get the size (number of bytes) of underlying buffers used by this
+   * vector.
+   * @return size of underlying buffers.
+   */
+  @Override
+  public int getBufferSize() {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int offsetBufferSize = (valueCount + 1) * OFFSET_WIDTH;
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    return offsetBufferSize + validityBufferSize + vector.getBufferSize();
+  }
+  
+  @Override
+  public int getBufferSizeFor(int valueCount) {
+    if (valueCount == 0) {
+      return 0;
+    }
+    final int validityBufferSize = getValidityBufferSizeFromCount(valueCount);
+    long innerVectorValueCount = offsetBuffer.getLong(valueCount * OFFSET_WIDTH);
+
+    return ((valueCount + 1) * OFFSET_WIDTH) +
+        vector.getBufferSizeFor(checkedCastToInt(innerVectorValueCount)) +
+        validityBufferSize;
+  }
+
+  @Override
+  public Field getField() {
+    return new Field(getName(), fieldType, Collections.singletonList(getDataVector().getField()));
+  }
+
+  @Override
+  public MinorType getMinorType() {
+    return MinorType.LIST;
+  }
+
+  @Override
+  public String getName() {
+    return null;
+  }
+
+  @Override
+  public void clear() {
+    offsetBuffer = releaseBuffer(offsetBuffer);
+    vector.clear();
+    valueCount = 0;
+    super.clear();
+    validityBuffer = releaseBuffer(validityBuffer);
+    lastSet = -1;
+  }
+
+  @Override
+  public void reset() {
+    offsetBuffer.setZero(0, offsetBuffer.capacity());
+    vector.reset();
+    valueCount = 0;
+    validityBuffer.setZero(0, validityBuffer.capacity());
+    lastSet = -1;
+  }
+
+  /**
+   * Return the underlying buffers associated with this vector. Note that this doesn't
+   * impact the reference counts for this buffer so it only should be used for in-context
+   * access. Also note that this buffer changes regularly thus
+   * external classes shouldn't hold a reference to it (unless they change it).
+   *
+   * @param clear Whether to clear vector before returning; the buffers will still be refcounted
+   *              but the returned array will be the only reference to them
+   * @return The underlying {@link ArrowBuf buffers} that is used by this
+   *         vector instance.
+   */
+  @Override
+  public ArrowBuf[] getBuffers(boolean clear) {
+    setReaderAndWriterIndex();
+    final ArrowBuf[] buffers;
+    if (getBufferSize() == 0) {
+      buffers = new ArrowBuf[0];
+    } else {
+      List<ArrowBuf> list = new ArrayList<>();
+      list.add(offsetBuffer);
+      list.add(validityBuffer);
+      list.addAll(Arrays.asList(vector.getBuffers(false)));
+      buffers = list.toArray(new ArrowBuf[list.size()]);
+    }
+    if (clear) {
+      for (ArrowBuf buffer : buffers) {
+        buffer.getReferenceManager().retain();
+      }
+      clear();
+    }
+    return buffers;
+  }
+
+  protected void invalidateReader() {
+    reader = null;
+  }
+
+  /**
+   * Get the element in the list vector at a particular index.
+   * @param index position of the element
+   * @return Object at given position
+   */
+  @Override
+  public Object getObject(int index) {
+    if (isSet(index) == 0) {
+      return null;
+    }
+    final List<Object> vals = new JsonStringArrayList<>();
+    final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+    final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    final ValueVector vv = getDataVector();
+    for (long i = start; i < end; i++) {
+      vals.add(vv.getObject(checkedCastToInt(i)));
+    }
+
+    return vals;
+  }
+
+  /**
+   * Check if element at given index is null.
+   *
+   * @param index position of element
+   * @return true if element at given index is null, false otherwise
+   */
+  @Override
+  public boolean isNull(int index) {
+    return (isSet(index) == 0);
+  }
+
+  /**
+   * Check if element at given index is empty list.
+   * @param index position of element
+   * @return true if element at given index is empty list or NULL, false otherwise
+   */
+  public boolean isEmpty(int index) {
+    if (isNull(index)) {
+      return true;
+    } else {
+      final long start = offsetBuffer.getLong(index * OFFSET_WIDTH);
+      final long end = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+      return start == end;
+    }
+  }
+
+  /**
+   * Same as {@link #isNull(int)}.
+   *
+   * @param index  position of element
+   * @return 1 if element at given index is not null, 0 otherwise
+   */
+  public int isSet(int index) {
+    final int byteIndex = index >> 3;
+    final byte b = validityBuffer.getByte(byteIndex);
+    final int bitIndex = index & 7;
+    return (b >> bitIndex) & 0x01;
+  }
+
+  /**
+   * Get the number of elements that are null in the vector.
+   *
+   * @return the number of null elements.
+   */
+  @Override
+  public int getNullCount() {
+    return BitVectorHelper.getNullCount(validityBuffer, valueCount);
+  }
+
+  /**
+   * Get the current value capacity for the vector.
+   * @return number of elements that vector can hold.
+   */
+  @Override
+  public int getValueCapacity() {
+    return getValidityAndOffsetValueCapacity();
+  }
+  
+  protected int getOffsetBufferValueCapacity() {
+    return checkedCastToInt(offsetBuffer.capacity() / OFFSET_WIDTH);
+  }
+  
+  private int getValidityAndOffsetValueCapacity() {
+    final int offsetValueCapacity = Math.max(getOffsetBufferValueCapacity() - 1, 0);
+    return Math.min(offsetValueCapacity, getValidityBufferValueCapacity());
+  }
+
+  private int getValidityBufferValueCapacity() {
+    return capAtMaxInt(validityBuffer.capacity() * 8);
+  }
+
+  /**
+   * Sets the list at index to be not-null.  Reallocates validity buffer if index
+   * is larger than current capacity.
+   */
+  public void setNotNull(int index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+  }
+
+  /**
+   * Start a new value in the list vector.
+   *
+   * @param index index of the value to start
+   */
+  public long startNewValue(long index) {
+    while (index >= getValidityAndOffsetValueCapacity()) {
+      reallocValidityAndOffsetBuffers();
+    }
+    for (long i = lastSet + 1; i <= index; i++) {
+      final long currentOffset = offsetBuffer.getLong(i * OFFSET_WIDTH);
+      offsetBuffer.setLong((i + 1) * OFFSET_WIDTH, currentOffset);
+    }
+    BitVectorHelper.setBit(validityBuffer, index);
+    lastSet = index;
+    return checkedCastToInt(offsetBuffer.getLong((lastSet + 1) * OFFSET_WIDTH));
+  }
+
+  /**
+   * End the current value.
+   *
+   * @param index index of the value to end
+   * @param size  number of elements in the list that was written
+   */
+  public void endValue(int index, int size) {
+    final long currentOffset = offsetBuffer.getLong((index + 1) * OFFSET_WIDTH);
+    offsetBuffer.setLong((index + 1) * OFFSET_WIDTH, currentOffset + size);
+  }
+
+  /**
+   * Sets the value count for the vector.
+   *
+   * @param valueCount   value count
+   */
+  @Override
+  public void setValueCount(int valueCount) {
+    this.valueCount = valueCount;
+    if (valueCount > 0) {
+      while (valueCount > getValidityAndOffsetValueCapacity()) {
+        /* check if validity and offset buffers need to be re-allocated */
+        reallocValidityAndOffsetBuffers();
+      }
+      for (long i = lastSet + 1; i < valueCount; i++) {
+        /* fill the holes with offsets */
+        final long currentOffset = offsetBuffer.getLong(i * OFFSET_WIDTH);
+        offsetBuffer.setLong((i + 1) * OFFSET_WIDTH, currentOffset);
+      }
+    }
+    /* valueCount for the data vector is the current end offset */
+    final long childValueCount = (valueCount == 0) ? 0 :
+            offsetBuffer.getLong((lastSet + 1) * OFFSET_WIDTH);
+    /* set the value count of data vector and this will take care of
+     * checking whether data buffer needs to be reallocated.
+     */
+    vector.setValueCount(checkedCastToInt(childValueCount));
+  }
+
+  public void setLastSet(int value) {
+    lastSet = value;
+  }
+
+  public long getLastSet() {
+    return lastSet;
+  }
+
+  @Override
+  public int getElementStartIndex(int index) {

Review comment:
       This should return `long` and not be casted to `int`




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