luoyuxia commented on code in PR #1770:
URL: https://github.com/apache/fluss/pull/1770#discussion_r2387006215
##########
fluss-lake/fluss-lake-iceberg/src/main/java/org/apache/fluss/lake/iceberg/tiering/IcebergLakeCommitter.java:
##########
@@ -314,8 +313,8 @@ private Snapshot getCommittedLatestSnapshotOfLake(String
commitUser) {
List<Snapshot> snapshots = (List<Snapshot>) icebergTable.snapshots();
// snapshots() returns snapshots in chronological order (oldest to
newest), Reverse to find
// most recent snapshot committed by Fluss
- Collections.reverse(snapshots);
- for (Snapshot snapshot : snapshots) {
+ for (int i = snapshots.size() - 1; i >= 0; i--) {
Review Comment:
Reverse snapshots directly will throw
```
Tiering table 1 is failed, fail reason is
java.lang.UnsupportedOperationException
at
org.apache.iceberg.relocated.com.google.common.collect.ImmutableList.set(ImmutableList.java:542)
at java.base/java.util.Collections.swap(Collections.java:501)
at java.base/java.util.Collections.reverse(Collections.java:382)
at
org.apache.fluss.lake.iceberg.tiering.IcebergLakeCommitter.getCommittedLatestSnapshotOfLake(IcebergLak
```
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