FANNG1 commented on code in PR #9753:
URL: https://github.com/apache/gravitino/pull/9753#discussion_r2735231515
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catalogs/catalog-lakehouse-paimon/src/main/java/org/apache/gravitino/catalog/lakehouse/paimon/GravitinoPaimonTable.java:
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@@ -188,6 +199,67 @@ private static void validate(List<String> primaryKeys,
List<String> partitionKey
}
}
+ private static void applyDistribution(Map<String, String> properties,
Distribution distribution) {
+ if (distribution == null || distribution.strategy() ==
Distributions.NONE.strategy()) {
+ return;
+ }
+
+ List<String> bucketKeys = getBucketKeys(distribution);
+ if (!bucketKeys.isEmpty()) {
+ properties.put(BUCKET_KEY, String.join(",", bucketKeys));
+ }
+
+ properties.put(BUCKET_NUM, String.valueOf(distribution.number()));
+ }
+
+ private static List<String> getBucketKeys(Distribution distribution) {
+ return Arrays.stream(distribution.expressions())
+ .map(
+ expression -> {
+ Preconditions.checkArgument(
+ expression instanceof NamedReference.FieldReference,
+ "Paimon bucket keys must be plain column references.");
+ NamedReference.FieldReference reference =
(NamedReference.FieldReference) expression;
+ String[] fieldName = reference.fieldName();
+ Preconditions.checkArgument(
+ fieldName.length == 1, "Paimon bucket keys must be single
columns.");
+ return fieldName[0];
+ })
+ .collect(Collectors.toList());
+ }
+
+ static Distribution getDistribution(Map<String, String> properties) {
+ if (properties == null) {
+ return Distributions.NONE;
+ }
+ String bucketKeys = properties.get(BUCKET_KEY);
+ if (StringUtils.isBlank(bucketKeys)) {
+ return Distributions.NONE;
+ }
+ List<String> bucketKeyList =
+ Arrays.stream(bucketKeys.split(","))
+ .map(String::trim)
+ .filter(StringUtils::isNotEmpty)
Review Comment:
updated
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