ZENOTME commented on code in PR #79:
URL: https://github.com/apache/iceberg-rust/pull/79#discussion_r1424917585
##########
crates/iceberg/src/spec/manifest_list.rs:
##########
@@ -156,12 +171,36 @@ impl ManifestListWriter {
match self.format_version {
FormatVersion::V1 => {
for manifest_entry in manifest_entries {
- let manifest_entry: ManifestListEntryV1 =
manifest_entry.into();
+ let manifest_entry: ManifestListEntryV1 =
manifest_entry.try_into()?;
self.avro_writer.append_ser(manifest_entry)?;
}
}
FormatVersion::V2 => {
- for manifest_entry in manifest_entries {
+ for mut manifest_entry in manifest_entries {
+ if manifest_entry.sequence_number ==
UNASSIGNED_SEQUENCE_NUMBER {
+ if manifest_entry.added_snapshot_id !=
self.snapshot_id {
+ return Err(Error::new(
+ ErrorKind::DataInvalid,
+ format!(
+ "Found unassigned sequence number for a
manifest from snapshot {}.",
+ manifest_entry.added_snapshot_id
+ ),
+ ));
+ }
+ manifest_entry.sequence_number = self.sequence_number;
Review Comment:
The reason we postpone this assignment is that we don't need to recall
manifest file if commit is fail. E.g. if the we assign the sequence_number in
ManifestWriter
```
// write Manifest
let entry = ManifestWriter(seq_num);
// writer ManifestList
let res = ManifestListWriter(entry);
// if commit is failed, we should recall the ManifestWriter to get a new
entry using a new seq num.
let res = commit(res);
```
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