Does hive need exact schema in Hive Export/Import?

[Devender Yadav]

Hi All,


I am using HDP 2.3

- Hadoop version - 2.7.1

- Hive version - 1.2.1


I created a table dev101 in hive using

    create table dev101 (col1 int, col2 char(10));

I inserted two records using

    insert into dev101 values (1, 'value1');
    insert into dev101 values (2, 'value2');

I exported data to HDFS using

    export table dev101 to '/tmp/dev101';


Then, I created a new table dev102 using

    create table dev102 (col1 int, col2 String);


I imported data from `/tmp/dev10` in `dev102` using

    import table dev102 from '/tmp/dev101';

I got error:

>FAILED: SemanticException [Error 10120]: The existing table is not compatible 
>with the import spec.   Column Schema does not match


Then I created another table `dev103` using

    create table dev103 (col1 int, col2 char(50));

Again imported:

    import table dev103 from '/tmp/dev101';

Same error:

>FAILED: SemanticException [Error 10120]: The existing table is not compatible 
>with the import spec.   Column Schema does not match

Finally, I create table with **exactly same schema**

    create table dev104 (col1 int, col2 char(10));

And imported

    import table dev104 from '/tmp/dev101';

Imported Successfully.

Does hive need exact schema in Hive Export/Import? ?



Regards,
Devender?

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