garyanaplan commented on a change in pull request #443:
URL: https://github.com/apache/arrow-rs/pull/443#discussion_r650750468
##########
File path: parquet/src/data_type.rs
##########
@@ -661,8 +661,15 @@ pub(crate) mod private {
_: &mut W,
bit_writer: &mut BitWriter,
) -> Result<()> {
+ if bit_writer.bytes_written() + values.len() >=
bit_writer.capacity() {
+ bit_writer.extend(256);
+ }
for value in values {
- bit_writer.put_value(*value as u64, 1);
+ if !bit_writer.put_value(*value as u64, 1) {
Review comment:
I found it hard to think of a good way to test this with the fix in
place.
I preferred the "don't auto expand memory at the point of failure" approach
because I'm fairly conservative and didn't want to make a change that was too
wide in impact without a better understanding of the code. i.e.: my fix
specifically targeted the error I reported and made it possible to detect in
other locations.
I think a better fix would be to (somehow) pre-size the vector or avoid
having to size a vector for all the bytes that could be written, but that would
be a much bigger scope to the fix.
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