nastra commented on code in PR #12401:
URL: https://github.com/apache/iceberg/pull/12401#discussion_r1973800528
##########
core/src/main/java/org/apache/iceberg/view/ViewMetadata.java:
##########
@@ -494,22 +499,22 @@ public ViewMetadata build() {
@VisibleForTesting
static List<ViewVersion> expireVersions(
- Map<Integer, ViewVersion> versionsById, int numVersionsToKeep,
ViewVersion currentVersion) {
+ Map<Integer, ViewVersion> versionsById,
+ int numVersionsToKeep,
+ Set<ViewVersion> keepVersions) {
Review Comment:
rather than changing this API I think we can also just do this:
```
--- a/core/src/main/java/org/apache/iceberg/view/ViewMetadata.java
+++ b/core/src/main/java/org/apache/iceberg/view/ViewMetadata.java
@@ -35,6 +35,7 @@ import org.apache.iceberg.exceptions.ValidationException;
import
org.apache.iceberg.relocated.com.google.common.annotations.VisibleForTesting;
import org.apache.iceberg.relocated.com.google.common.base.Preconditions;
import org.apache.iceberg.relocated.com.google.common.collect.ImmutableMap;
+import org.apache.iceberg.relocated.com.google.common.collect.ImmutableSet;
import org.apache.iceberg.relocated.com.google.common.collect.Lists;
import org.apache.iceberg.relocated.com.google.common.collect.Maps;
import org.apache.iceberg.relocated.com.google.common.collect.Sets;
@@ -463,8 +464,13 @@ public interface ViewMetadata extends Serializable {
historySize);
// expire old versions, but keep at least the versions added in this
builder
- int numAddedVersions = (int)
changes(MetadataUpdate.AddViewVersion.class).count();
- int numVersionsToKeep = Math.max(numAddedVersions, historySize);
+ Set<Integer> addedVersions =
+ changes(MetadataUpdate.AddViewVersion.class)
+ .map(v -> v.viewVersion().versionId())
+ .collect(Collectors.toSet());
+ int numVersions =
+
ImmutableSet.builder().addAll(addedVersions).add(currentVersionId).build().size();
+ int numVersionsToKeep = Math.max(numVersions, historySize);
```
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