ZachDischner commented on code in PR #9731:
URL: https://github.com/apache/iceberg/pull/9731#discussion_r1802296599
##########
spark/v3.5/spark/src/main/java/org/apache/iceberg/spark/actions/RewriteManifestsSparkAction.java:
##########
@@ -160,6 +172,32 @@ public RewriteManifestsSparkAction stagingLocation(String
newStagingLocation) {
return this;
}
+ @Override
+ public RewriteManifestsSparkAction clusterBy(List<String> clusteringColumns)
{
Review Comment:
Can change
##########
api/src/main/java/org/apache/iceberg/actions/RewriteManifests.java:
##########
@@ -44,6 +47,43 @@ public interface RewriteManifests
*/
RewriteManifests rewriteIf(Predicate<ManifestFile> predicate);
+ /**
+ * Rewrite manifests in a given order, based on partition field names
+ *
+ * <p>Supply an optional set of partition field names to cluster the
rewritten manifests by. For
+ * example, given a table PARTITIONED BY (a, b, c, d), you may wish to
rewrite and cluster
+ * manifests by ('d', 'b') only, based on your query patterns. Rewriting
Manifests in this way
+ * will yield manifest_lists that point to manifest_files containing data
files for common 'd' and
+ * 'b' partitions.
+ *
+ * <p>If not set, manifests will be rewritten in the order of the transforms
in the table's
+ * current partition spec.
+ *
+ * @param partitionFieldClustering Exact transformed column names used for
partitioning; not the
+ * raw column names that partitions are derived from. E.G. supply
'data_bucket' and not 'data'
+ * for a bucket(N, data) partition * definition
+ * @return this for method chaining
+ */
+ default RewriteManifests clusterBy(List<String> partitionFieldClustering) {
Review Comment:
Can change
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