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Posted to dev@hive.apache.org by "Namit Jain (JIRA)" <ji...@apache.org> on 2012/12/20 10:13:12 UTC
[jira] [Created] (HIVE-3824) bug if different serdes are used for
different partitions
Namit Jain created HIVE-3824:
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Summary: bug if different serdes are used for different partitions
Key: HIVE-3824
URL: https://issues.apache.org/jira/browse/HIVE-3824
Project: Hive
Issue Type: Bug
Components: Query Processor
Reporter: Namit Jain
Consider the following testcase:
create table tst5 (key string, value string) partitioned by (ds string) stored as rcfile;
insert overwrite table tst5 partition (ds='1') select * from src;
insert overwrite table tst5 partition (ds='2') select * from src;
insert overwrite table tst5 partition (ds='3') select * from src;
alter table tst5 stored as sequencefile;
insert overwrite table tst5 partition (ds='4') select * from src;
insert overwrite table tst5 partition (ds='5') select * from src;
insert overwrite table tst5 partition (ds='6') select * from src;
alter table tst5 set serde 'org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe';
insert overwrite table tst5 partition (ds='7') select * from src;
insert overwrite table tst5 partition (ds='8') select * from src;
insert overwrite table tst5 partition (ds='9') select * from src;
The following query works fine:
select key + key, value from tst5 where ((ds = '4') or (ds = '1'));
since both the partitions use ColumnarSerDe
But the following query fails:
select key + key, value from tst5 where ((ds = '4') or (ds = '1') or (ds='7'));
since different serdes are used.
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