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From "pengcheng xiong" <pxi...@hortonworks.com>
Subject Review Request 38940: unable to create temporary table using CTAS if regular table with that name already exists
Date Thu, 01 Oct 2015 22:50:01 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/38940/
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Review request for hive, Ashutosh Chauhan and John Pullokkaran.


Repository: hive-git


Description
-------

CTAS temporary table query fails if regular table with the same name already exists. 
Steps to reproduce the issue:
{noformat}
hive> use dbtemptable;
OK
Time taken: 0.273 seconds
hive> create table a(i int);
OK
Time taken: 0.297 seconds
hive> create temporary table a(i int);
OK
Time taken: 0.165 seconds
hive> create table b(i int);
OK
Time taken: 0.212 seconds
hive> create temporary table b as select * from a;
FAILED: SemanticException org.apache.hadoop.hive.ql.parse.SemanticException: Table already
exists: dbtemptable.b
hive> create table c(i int);
OK
Time taken: 0.264 seconds
hive> create temporary table b as select * from c;
FAILED: SemanticException org.apache.hadoop.hive.ql.parse.SemanticException: Table already
exists: dbtemptable.b
{noformat}


Diffs
-----

  ql/src/java/org/apache/hadoop/hive/ql/metadata/SessionHiveMetaStoreClient.java 51ff262 
  ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java 4bec228 
  ql/src/test/queries/clientpositive/temp_table.q e587f3f 
  ql/src/test/results/clientpositive/spark/temp_table.q.out 65e256d 
  ql/src/test/results/clientpositive/temp_table.q.out e2987fe 
  ql/src/test/results/clientpositive/tez/temp_table.q.out 49f57c2 

Diff: https://reviews.apache.org/r/38940/diff/


Testing
-------


Thanks,

pengcheng xiong


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