[jira] [Created] (HIVE-12506) SHOW CREATE TABLE command creates a table that does not work for RCFile format

[Eric Lin (JIRA)]

Eric Lin created HIVE-12506:
-------------------------------

             Summary: SHOW CREATE TABLE command creates a table that does not 
work for RCFile format
                 Key: HIVE-12506
                 URL: https://issues.apache.org/jira/browse/HIVE-12506
             Project: Hive
          Issue Type: Bug
          Components: Serializers/Deserializers
    Affects Versions: 1.1.1
            Reporter: Eric Lin


See the following test case:

1) Create a table with RCFile format:

{code}
DROP TABLE IF EXISTS test;
CREATE TABLE test (a int) PARTITIONED BY (p int)
ROW FORMAT DELIMITED FIELDS TERMINATED BY '|' 
STORED AS RCFILE;
{code}

2) run "DESC FORMATTED test"

{code}
# Storage Information
SerDe Library:          org.apache.hadoop.hive.serde2.columnar.ColumnarSerDe
InputFormat:            org.apache.hadoop.hive.ql.io.RCFileInputFormat
OutputFormat:           org.apache.hadoop.hive.ql.io.RCFileOutputFormat
{code}

shows that SerDe used is "ColumnarSerDe"

3) run "SHOW CREATE TABLE" and get the output:

{code}
CREATE TABLE `test`(
  `a` int)
PARTITIONED BY (
  `p` int)
ROW FORMAT DELIMITED
  FIELDS TERMINATED BY '|'
STORED AS INPUTFORMAT
  'org.apache.hadoop.hive.ql.io.RCFileInputFormat'
OUTPUTFORMAT
  'org.apache.hadoop.hive.ql.io.RCFileOutputFormat'
LOCATION
  'hdfs://node5.lab.cloudera.com:8020/user/hive/warehouse/case_78732.db/test'
TBLPROPERTIES (
  'transient_lastDdlTime'='1448343875')
{code}

Note that there is no mention of "ColumnarSerDe"

4) Drop the table and then create the table again using the output from 3)

5) Check the output of "DESC FORMATTED test"

{code}

# Storage Information
SerDe Library:          org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
InputFormat:            org.apache.hadoop.hive.ql.io.RCFileInputFormat
OutputFormat:           org.apache.hadoop.hive.ql.io.RCFileOutputFormat
{code}

The SerDe falls back to "LazySimpleSerDe", which is not correct.

Any further query tries to INSERT or SELECT this table will fail with errors




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