difin commented on code in PR #6789:
URL: https://github.com/apache/hive/pull/6789#discussion_r4300478644
##########
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/HiveTableUtil.java:
##########
@@ -259,6 +261,71 @@ public static Table deserializeTable(Configuration config,
String name) {
return table;
}
+ /**
+ * Resolves the Iceberg {@link Table} for split generation ({@code
IcebergInputFormat#getSplits}).
+ *
+ * <p>Serialized tables ({@link SerializableTable}) only carry a metadata
snapshot and produce
+ * {@link org.apache.iceberg.DataTableScan} (client-side manifest planning).
When REST catalog
+ * server-side scan planning is enabled, reload the live table from the
catalog so
+ * {@code table.newScan()} returns {@link
org.apache.iceberg.rest.RESTTableScan} and issues
+ * {@code POST /plan} on the REST server.
+ *
+ * <p>Intra-transaction read-after-write ({@link
InputFormatConfig#TABLE_METADATA_LOCATION}) still
+ * uses the deserialized snapshot so uncommitted metadata is visible.
+ */
+ public static Table resolveTableForScanPlanning(Configuration conf, String
tableIdentifier) {
+ if (shouldReloadForServerSideScanPlanning(conf)) {
+ Table table = Catalogs.loadTable(conf);
+ checkAndSetIoConfig(conf, table);
+ IcebergVendedCredentialUtil.applyFromJobConf(table,
resolveCatalogName(conf), conf);
+ return table;
+ }
+
+ Table table = deserializeTable(conf, tableIdentifier);
+ if (table == null) {
+ table = Catalogs.loadTable(conf);
+ checkAndSetIoConfig(conf, table);
+ }
+ return table;
+ }
+
+ private static boolean shouldReloadForServerSideScanPlanning(Configuration
conf) {
Review Comment:
Done: HS2 sets iceberg.mr.server-side-scan-planning.<catalog>=true when it
decides on server-side planning; getSplits only checks that marker (plus the
incremental / metadata-table / intra-txn exclusions) and no longer re-derives
type/mode/switch. Keyed per catalog because one job conf can carry tables from
several catalogs. If the marker is set and the reload fails, the error
propagates instead of falling back silently. The pinned snapshot comes from the
serialized table, so no separate snapshot-id key is needed.
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