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https://issues.apache.org/jira/browse/HIVE-27177?focusedWorklogId=854089&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-854089
]
ASF GitHub Bot logged work on HIVE-27177:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 31/Mar/23 07:21
Start Date: 31/Mar/23 07:21
Worklog Time Spent: 10m
Work Description: zhangbutao commented on code in PR #4155:
URL: https://github.com/apache/hive/pull/4155#discussion_r1154096584
##########
ql/src/java/org/apache/hadoop/hive/ql/ddl/table/convert/AlterTableConvertOperation.java:
##########
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.hive.ql.ddl.table.convert;
+
+
+import org.apache.hadoop.hive.ql.ddl.DDLOperation;
+import org.apache.hadoop.hive.ql.ddl.DDLOperationContext;
+import org.apache.hadoop.hive.ql.ddl.table.AbstractAlterTableOperation;
+import org.apache.hadoop.hive.ql.metadata.HiveException;
+import org.apache.hadoop.hive.ql.metadata.Partition;
+import org.apache.hadoop.hive.ql.metadata.Table;
+import org.apache.hadoop.hive.ql.parse.SemanticException;
+
+import java.util.Map;
+
+/**
+ * Operation process of ALTER TABLE ... CONVERT command
+ */
+public class AlterTableConvertOperation extends
AbstractAlterTableOperation<AlterTableConvertDesc> {
+
+ public AlterTableConvertOperation(DDLOperationContext context,
AlterTableConvertDesc desc) {
+ super(context, desc);
+ }
+
+ @Override
+ protected void doAlteration(Table table, Partition partition) throws
HiveException {
+ // Add the covert type
+ String convertType = desc.getConvertSpec().getTargetType();
+ if (convertType.equalsIgnoreCase("ICEBERG")) {
+ table.getParameters().put("storage_handler",
"org.apache.iceberg.mr.hive.HiveIcebergStorageHandler");
Review Comment:
What happens if the table is already a iceberg table?
##########
ql/src/java/org/apache/hadoop/hive/ql/ddl/table/convert/AlterTableConvertOperation.java:
##########
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.hive.ql.ddl.table.convert;
+
+
+import org.apache.hadoop.hive.ql.ddl.DDLOperation;
+import org.apache.hadoop.hive.ql.ddl.DDLOperationContext;
+import org.apache.hadoop.hive.ql.ddl.table.AbstractAlterTableOperation;
+import org.apache.hadoop.hive.ql.metadata.HiveException;
+import org.apache.hadoop.hive.ql.metadata.Partition;
+import org.apache.hadoop.hive.ql.metadata.Table;
+import org.apache.hadoop.hive.ql.parse.SemanticException;
+
+import java.util.Map;
+
+/**
+ * Operation process of ALTER TABLE ... CONVERT command
+ */
+public class AlterTableConvertOperation extends
AbstractAlterTableOperation<AlterTableConvertDesc> {
+
+ public AlterTableConvertOperation(DDLOperationContext context,
AlterTableConvertDesc desc) {
+ super(context, desc);
+ }
+
+ @Override
+ protected void doAlteration(Table table, Partition partition) throws
HiveException {
+ // Add the covert type
+ String convertType = desc.getConvertSpec().getTargetType();
+ if (convertType.equalsIgnoreCase("ICEBERG")) {
+ table.getParameters().put("storage_handler",
"org.apache.iceberg.mr.hive.HiveIcebergStorageHandler");
Review Comment:
I have tested this case: if the table is already a iceberg table, this
conversion would not throw exception, and the iceberg table metadata will be
updated. I think we can skip to convert this table if it is a iceberg table.
What do you think?
Issue Time Tracking
-------------------
Worklog Id: (was: 854089)
Time Spent: 40m (was: 0.5h)
> Add alter table...Convert to Iceberg command
> --------------------------------------------
>
> Key: HIVE-27177
> URL: https://issues.apache.org/jira/browse/HIVE-27177
> Project: Hive
> Issue Type: Improvement
> Reporter: Ayush Saxena
> Assignee: Ayush Saxena
> Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Add an alter table <tblName> convert to Iceberg [TBLPROPERTIES('','')] to
> convert exiting external tables to iceberg tables
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