andishgar opened a new issue, #51144:
URL: https://github.com/apache/arrow/issues/51144
### Describe the bug, including details regarding any error messages,
version, and platform.
The following code
```c++
TEST(TestAdaptiveUIntBuilderWithStartIntSize, MyTest) {
AdaptiveUIntBuilder builder;
ASSERT_OK(builder.Append(1));
ASSERT_OK(builder.Append(2));
ASSERT_OK(builder.Append(3));
ASSERT_OK(builder.Append(4));
std::vector<uint64_t> values{5,6,7,8};
ASSERT_OK(builder.AppendValues(values.data(),4));
auto array = builder.Finish().ValueOrDie();
ARROW_LOGGER_INFO("",array->ToString());
}
```
produces the following result because the pending data is not committed
[here](https://github.com/apache/arrow/blob/f69ec05524b0d6ed44c3fa804377332dfc085fac/cpp/src/arrow/array/builder_adaptive.cc#L352):
```text
[
1,
2,
3,
4
]
```
### Component(s)
C++
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