Chiran Ravani created HIVE-22459:
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Summary: Hive datadiff function provided inconsistent results when
hive.ferch.task.conversion is set to none
Key: HIVE-22459
URL: https://issues.apache.org/jira/browse/HIVE-22459
Project: Hive
Issue Type: Improvement
Components: HiveServer2
Affects Versions: 3.0.0
Reporter: Chiran Ravani
Hive datadiff function provided inconsistent results when
hive.ferch.task.conversion to more
Below is output, whereas in Hive 1.2 the results are consistent
Note: Same query works well on Hive 3 when hive.ferch.task.conversion is set to
none
Steps to reproduce the problem.
{code}
0: jdbc:hive2://c1113-node2.squadron.support.> select datetimecol from
testdatediff where datediff(cast(current_timestamp as string), datetimecol)<183;
INFO : Compiling
command(queryId=hive_20191105103636_1dff22a1-02f3-48a8-b076-0b91272f2268):
select datetimecol from testdatediff where datediff(cast(current_timestamp as
string), datetimecol)<183
INFO : Semantic Analysis Completed (retrial = false)
INFO : Returning Hive schema:
Schema(fieldSchemas:[FieldSchema(name:datetimecol, type:string, comment:null)],
properties:null)
INFO : Completed compiling
command(queryId=hive_20191105103636_1dff22a1-02f3-48a8-b076-0b91272f2268); Time
taken: 0.479 seconds
INFO : Executing
command(queryId=hive_20191105103636_1dff22a1-02f3-48a8-b076-0b91272f2268):
select datetimecol from testdatediff where datediff(cast(current_timestamp as
string), datetimecol)<183
INFO : Completed executing
command(queryId=hive_20191105103636_1dff22a1-02f3-48a8-b076-0b91272f2268); Time
taken: 0.013 seconds
INFO : OK
+--------------+
| datetimecol |
+--------------+
| 2019-07-24 |
+--------------+
1 row selected (0.797 seconds)
0: jdbc:hive2://c1113-node2.squadron.support.>
{code}
After setting fetch task conversion as none.
{code}
0: jdbc:hive2://c1113-node2.squadron.support.> set
hive.fetch.task.conversion=none;
No rows affected (0.017 seconds)
0: jdbc:hive2://c1113-node2.squadron.support.> set hive.fetch.task.conversion;
+----------------------------------+
| set |
+----------------------------------+
| hive.fetch.task.conversion=none |
+----------------------------------+
1 row selected (0.015 seconds)
0: jdbc:hive2://c1113-node2.squadron.support.> select datetimecol from
testdatediff where datediff(cast(current_timestamp as string), datetimecol)<183;
INFO : Compiling
command(queryId=hive_20191105103709_0c38e446-09cf-45dd-9553-365146f42452):
select datetimecol from testdatediff where datediff(cast(current_timestamp as
string), datetimecol)<183
+----------------------------+
| datetimecol |
+----------------------------+
| 2019-09-09T10:45:49+02:00 |
| 2019-07-24 |
+----------------------------+
2 rows selected (5.327 seconds)
0: jdbc:hive2://c1113-node2.squadron.support.>
{code}
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