Subhasis Gorai created HIVE-26931:
-------------------------------------

             Summary: REPL LOAD command does not throw any error for incorrect 
syntax
                 Key: HIVE-26931
                 URL: https://issues.apache.org/jira/browse/HIVE-26931
             Project: Hive
          Issue Type: Bug
          Components: HiveServer2
            Reporter: Subhasis Gorai


In some cases, users are using the REPL LOAD command incorrectly. It does not 
really throw any meaningful error/warning message, and as expected it does not 
replicate the database as well.

For example,
{code:java}
repl load target_db with 
('hive.repl.rootdir'='hdfs://c3649-node2.coelab.cloudera.com:8020/user/hive/repl',
 'hive.repl.include.external.tables'= 'true', 
'hive.repl.replica.external.table.base.dir'='hdfs://c3649node2.coelab.cloudera.com:8020/warehouse/tablespace/external/hive/target_db.db'){code}
The above command does not follow the REPL LOAD syntax. This does not produce 
any error message, nor it replicates the database. So, it causes confusion.
{code:java}
0: jdbc:hive2://nightly7x-us-bj-3.nightly7x-u> repl load test_1_replica with 
('hive.repl.rootdir'='hdfs://c3649-node2.coelab.cloudera.com:8020/user/repl', 
'hive.repl.include.external.tables'= 'true', 
'hive.repl.replica.external.table.base.dir'='hdfs://c3649node2.coelab.cloudera.com:8020/warehouse/tablespace/external/hive/test_1_replica.db');
INFO  : Compiling 
command(queryId=hive_20221201113704_08ee46a6-ede9-4c92-9502-82b9fbc416bd): repl 
load test_1_replica with 
('hive.repl.rootdir'='hdfs://c3649-node2.coelab.cloudera.com:8020/user/repl', 
'hive.repl.include.external.tables'= 'true', 
'hive.repl.replica.external.table.base.dir'='hdfs://c3649node2.coelab.cloudera.com:8020/warehouse/tablespace/external/hive/test_1_replica.db')
INFO  : Semantic Analysis Completed (retrial = false)
INFO  : Created Hive schema: Schema(fieldSchemas:null, properties:null)
INFO  : Completed compiling 
command(queryId=hive_20221201113704_08ee46a6-ede9-4c92-9502-82b9fbc416bd); Time 
taken: 0.051 seconds
INFO  : Executing 
command(queryId=hive_20221201113704_08ee46a6-ede9-4c92-9502-82b9fbc416bd): repl 
load test_1_replica with 
('hive.repl.rootdir'='hdfs://c3649-node2.coelab.cloudera.com:8020/user/repl', 
'hive.repl.include.external.tables'= 'true', 
'hive.repl.replica.external.table.base.dir'='hdfs://c3649node2.coelab.cloudera.com:8020/warehouse/tablespace/external/hive/test_1_replica.db')
INFO  : Completed executing 
command(queryId=hive_20221201113704_08ee46a6-ede9-4c92-9502-82b9fbc416bd); Time 
taken: 0.001 seconds
INFO  : OK
No rows affected (0.065 seconds)
0: jdbc:hive2://nightly7x-us-bj-3.nightly7x-u>{code}
Ideally, since this is a wrong command, it should throw an error.



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