prodeezy commented on a change in pull request #695: [WIP] Cherrypick snapshot
feature
URL: https://github.com/apache/incubator-iceberg/pull/695#discussion_r368156637
##########
File path: core/src/main/java/org/apache/iceberg/util/SnapshotUtil.java
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@@ -55,4 +56,28 @@ private SnapshotUtil() {
}
return ancestorIds;
}
+
+ public static boolean isCurrentAncestor(TableMetadata tableMeta, long
snapshotId) {
+ List<Long> currentAncestors =
SnapshotUtil.ancestorIds(tableMeta.currentSnapshot(), tableMeta::snapshot);
+ return currentAncestors.contains(snapshotId);
+ }
+
+ /**
+ * Return the latest snapshot whose timestamp is before the provided
timestamp.
+ * @param tableMeta TableMetadata representing the table state on which the
snapshot is being looked up
+ * @param timestampMillis lookup snapshots before this timestamp
+ * @return
+ */
+ public static Snapshot findLatestSnapshotOlderThan(TableMetadata tableMeta,
long timestampMillis) {
+ long snapshotTimestamp = 0;
+ Snapshot result = null;
+ for (Snapshot snapshot : tableMeta.snapshots()) {
Review comment:
makes sense.. otherwise `rollbackToTime()` behaviour seems inconsistent
from `rollbackTo()`
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