nsivabalan commented on code in PR #17775:
URL: https://github.com/apache/hudi/pull/17775#discussion_r2729653208
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hudi-spark-datasource/hudi-spark-common/src/main/scala/org/apache/hudi/SparkHoodieTableFileIndex.scala:
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@@ -437,6 +439,55 @@ class SparkHoodieTableFileIndex(spark: SparkSession,
private def arePartitionPathsUrlEncoded: Boolean =
metaClient.getTableConfig.getUrlEncodePartitioning.toBoolean
+ /**
+ * List partition paths matching path prefixes from the Catalog.
+ *
+ * File Index implementations can override this method to fetch partition
paths from the Catalog. This may be faster
+ * than listing all partition paths from the table metadata and filtering
them. This is definitely faster than
+ * listing all partition paths from the file system when metadata table may
not be enabled.
+ *
+ * Fetches all partition paths that are the sub-directories of the list of
provided (relative) paths.
+ * <p>
+ * E.g., Table has partition 4 partitions:
+ * year=2022/month=08/day=30, year=2022/month=08/day=31,
year=2022/month=07/day=03, year=2022/month=07/day=04
+ * The relative path "year=2022" returns all partitions, while the relative
path
+ * "year=2022/month=07" returns only two partitions.
+ *
+ * @param relativePathPrefixes The prefixes to relative partition paths that
must match
+ * @return null if not supported by File Index implementation
+ */
+ override protected def
getMatchingPartitionPathsFromCatalog(relativePathPrefixes: List[String]):
List[String] = {
+ // If listing from the catalog is disabled, return null
+ if
(!configProperties.getBoolean(FILE_INDEX_LIST_PARTITION_PATHS_FROM_HMS_ENABLED.key,
FILE_INDEX_LIST_PARTITION_PATHS_FROM_HMS_ENABLED.defaultValue())) {
+ null
+ } else {
+ // Retrieve all the partition paths from the catalog
Review Comment:
should we also take this route only when mdt is disabled
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