[GitHub] [hive] pvary commented on a change in pull request #2419: HIVE-25276: Enable automatic statistics generation for Iceberg tables

[GitBox <gi...@apache.org>]

pvary commented on a change in pull request #2419:
URL: https://github.com/apache/hive/pull/2419#discussion_r672435549



##########
File path: iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergMetaHook.java
##########
@@ -233,15 +237,21 @@ public void preAlterTable(org.apache.hadoop.hive.metastore.api.Table hmsTable, E
       preAlterTableProperties.tableLocation = sd.getLocation();
       preAlterTableProperties.format = sd.getInputFormat();
       preAlterTableProperties.schema = schema(catalogProperties, hmsTable);
-      preAlterTableProperties.spec = spec(conf, preAlterTableProperties.schema, catalogProperties, hmsTable);
       preAlterTableProperties.partitionKeys = hmsTable.getPartitionKeys();
 
       context.getProperties().put(HiveMetaHook.ALLOW_PARTITION_KEY_CHANGE, "true");
       // If there are partition keys specified remove them from the HMS table and add them to the column list
-      if (hmsTable.isSetPartitionKeys()) {
+      if (hmsTable.isSetPartitionKeys() && !hmsTable.getPartitionKeys().isEmpty()) {
+        List<PartitionTransformSpec> spec = PartitionTransform.getPartitionTransformSpec(hmsTable.getPartitionKeys());
+        if (!SessionStateUtil.addResource(conf, hive_metastoreConstants.PARTITION_TRANSFORM_SPEC, spec)) {
+          throw new MetaException("Query state attached to Session state must be not null. " +
+              "Partition transform metadata cannot be saved.");
+        }
         hmsTable.getSd().getCols().addAll(hmsTable.getPartitionKeys());
         hmsTable.setPartitionKeysIsSet(false);
       }
+      preAlterTableProperties.spec = spec(conf, preAlterTableProperties.schema, hmsTable);

Review comment:
       This is moved from line 236. We need it to be set, but we have to do it after we got the correct spec




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