tustvold commented on code in PR #6536:
URL: https://github.com/apache/arrow-rs/pull/6536#discussion_r1799704838
##########
object_store/src/local.rs:
##########
@@ -409,7 +415,23 @@ impl ObjectStore for LocalFileSystem {
_ => Some(Error::UnableToRenameFile { source
}),
},
},
- PutMode::Update(_) => unreachable!(),
+ PutMode::Update(uv) => {
+ let metadata = path.metadata().map_err(|e|
Error::Metadata {
+ source: e.into(),
+ path: path.to_str().unwrap().to_string(),
+ })?;
+ let witness = get_etag(&metadata);
Review Comment:
FWIW S3 is the only object store that doesn't, all the others have supported
this for years, even the S3-compatible ones. That being said AWS are finally
waking up, most recently adding support for PutIfNotExists, but as with adding
strong consistency, they're rather late to the party :sweat_smile:
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