vector/src/main/java/org/apache/arrow/vector/BaseVariableWidthVector.java [436:451]:
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  public void allocateNew(long totalBytes, int valueCount) {
    assert totalBytes >= 0;

    checkDataBufferSize(totalBytes);
    computeAndCheckOffsetsBufferSize(valueCount);

    /* we are doing a new allocation -- release the current buffers */
    clear();

    try {
      allocateBytes(totalBytes, valueCount);
    } catch (Exception e) {
      clear();
      throw e;
    }
  }
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vector/src/main/java/org/apache/arrow/vector/BaseLargeVariableWidthVector.java [420:435]:
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  public void allocateNew(long totalBytes, int valueCount) {
    assert totalBytes >= 0;

    checkDataBufferSize(totalBytes);
    computeAndCheckOffsetsBufferSize(valueCount);

    /* we are doing a new allocation -- release the current buffers */
    clear();

    try {
      allocateBytes(totalBytes, valueCount);
    } catch (Exception e) {
      clear();
      throw e;
    }
  }
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