sadanand48 commented on code in PR #9079:
URL: https://github.com/apache/ozone/pull/9079#discussion_r2409693717
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hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/snapshot/SnapshotDiffManager.java:
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@@ -1223,6 +1265,70 @@ Set<String> getDeltaFiles(OmSnapshot fromSnapshot,
toSnapshot.getSnapshotTableKey()));
}
+ /**
+ * Resolve the VersionMeta of the ancestor snapshot (fromSnapshotId)
+ * that the given snapshot (toSnapshot) was built on.
+ *
+ * Traverses the snapshot chain backwards using prevSnapId.
+ */
+ private OmSnapshotLocalData.VersionMeta resolveBaseVersionMeta(
+ OmSnapshotLocalData toSnapshot,
+ UUID fromSnapshotId) throws IOException {
+ OmMetadataManagerImpl metadataManager =
+ (OmMetadataManagerImpl) ozoneManager.getMetadataManager();
+ // Start walking back from the child snapshot
+ OmSnapshotLocalData child = toSnapshot;
+ while (!child.getPreviousSnapshotId().equals(fromSnapshotId)) {
Review Comment:
I can add a max number snapshots to traverse count here. What is a good
value to have for it?
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