[HIVE-25813] CREATE TABLE x LIKE storagehandler-based-source fails

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0-alpha-2
• Labels: pull-request-available
• Assignee: Sai Hemanth Gantasala
• Reporter: Sai Hemanth Gantasala
• Created: 16/Dec/21 00:42
• Updated: 16/Nov/22 13:50
• Resolved: 01/Nov/22 02:04

Description

CREATE EXTERNAL TABLE default.dbs (
  DB_ID            bigint,
  DB_LOCATION_URI  string,
  NAME             string,
  OWNER_NAME       string,
  OWNER_TYPE       string )
STORED BY 'org.apache.hive.storage.jdbc.JdbcStorageHandler'
TBLPROPERTIES (
  'hive.sql.database.type' = 'MYSQL',
  'hive.sql.jdbc.driver'   = 'com.mysql.jdbc.Driver',
  'hive.sql.jdbc.url'      = 'jdbc:mysql://localhost:3306/hive1',
  'hive.sql.dbcp.username' = 'hive1',
  'hive.sql.dbcp.password' = 'cloudera',
  'hive.sql.query' = 'SELECT DB_ID, DB_LOCATION_URI, NAME, OWNER_NAME, OWNER_TYPE FROM DBS'
);

CREATE TABLE default.dbscopy LIKE default.dbs;

Caused by: java.lang.NullPointerException
	at org.apache.hadoop.hive.metastore.HiveMetaStoreUtils.getFieldsFromDeserializer(HiveMetaStoreUtils.java:186) 

With this patch, we don't want to copy over the table properties or any other physical properties (storage handler e.t.c) of the source table when CREATE TABLE LIKE TABLE command is executed. Only table schema (logical properties) should be copied. This implementation is consistent with other SQL engines like Mysql, Redshift etc.

Issue Links

• is fixed by: HIVE-25989 CTLT HBaseStorageHandler is dropping underlying HBase table when failed
• links to: GitHub Pull Request #3301
• links to: GitHub Pull Request #3627