alamb commented on a change in pull request #8571:
URL: https://github.com/apache/arrow/pull/8571#discussion_r518757983
##########
File path: rust/arrow-flight/Cargo.toml
##########
@@ -27,7 +27,10 @@ license = "Apache-2.0"
[dependencies]
arrow = { path = "../arrow", version = "3.0.0-SNAPSHOT" }
-tonic = "0.3"
+tonic = "0.3.1"
Review comment:
I wonder if there is some reason to upgrade tonic in this same PR?
##########
File path: rust/arrow/src/util/bit_chunk_iterator.rs
##########
@@ -55,48 +58,52 @@ impl<'a> BitChunks<'a> {
pub struct BitChunkIterator<'a> {
buffer: &'a Buffer,
raw_data: *const u8,
- offset: usize,
+ bit_offset: usize,
chunk_len: usize,
index: usize,
}
impl<'a> BitChunks<'a> {
+ /// Returns the number of remaining bits, guaranteed to be between 0 and
63 (inclusive)
#[inline]
pub const fn remainder_len(&self) -> usize {
self.remainder_len
}
+ /// Returns the bitmask of remaining bits
#[inline]
pub fn remainder_bits(&self) -> u64 {
let bit_len = self.remainder_len;
if bit_len == 0 {
0
} else {
- let byte_len = ceil(bit_len, 8);
Review comment:
Just to confirm my understanding, the bug is that the previous code
assumed the remainder bits always started at a byte boundary like:
```
+--------+--------+--------+----+
| | | | |
+--------+--------+--------+----+
^
(remainder starts)
```
But produces incorrect behavior if the remainder starts in the middle of a
byte
```
+--------+--------+--------+----+
| | | | |
+--------+--------+--------+----+
^
(remainder starts)
```
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