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Problem IT17068
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Status: Closed |
ASSERT FAILURE IN HASH_PROCESS_ALL_GROUPS POSSIBLE FOR QUERY WITH AGGREGATE FUNCTION AND GROUP BY CLAUSE
|
| product: |
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10 |
| Problem description: |
A query with an aggregate function and group by clause may
encounter an assert failure with a stack like:
afstack
mt_ex_throw_sig
afsig_handler
hash_process_all_groups
group_open
sort_open
prepselect
open_cursor
sql_open
sq_open
sqmain
spawn_thread
th_init_initgls |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Users of 12.10.xC7W1 and 12.10.xC7W2 *
****************************************************************
* PROBLEM DESCRIPTION: *
* An assertion failure may occur for a query under the *
* following conditions: *
* - query has a group by clause *
* - at least one of the group by columns is of type varchar *
* or lvarchar, or an expression that results in a character *
* type *
* - there are many groups produced and the hash table used *
* for processing grouping operation overflowed to disk *
****************************************************************
* RECOMMENDATION: *
* Update to IBM Informix Server 12.10.xC8 *
**************************************************************** |
| Local Fix: |
|
| Solution |
|
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 15.09.2016
09.12.2016
09.12.2016 |
| Problem solved at the following versions (IBM BugInfos) |
12.10.xC8
|
| Problem solved according to the fixlist(s) of the following version(s) |
