On Wed, Dec 7, 2016 at 11:34 AM, Amit Langote <amitlangot...@gmail.com> wrote:
>> begin;
>> create schema if not exists s;
>> create table s.t (c text, d text, id serial) partition by list
>> ((ascii(substring(coalesce(c, d, ''), 1, 1))));
>> create table s.t_part_ascii_065 partition of s.t for values in ( 65 );
>>
>> it logs as follows:
>>
>> 2016-12-07 17:03:45.787 CET 6125 LOG: server process (PID 11503) was
>> terminated by signal 11: Segmentation fault
>> 2016-12-07 17:03:45.787 CET 6125 DETAIL: Failed process was running: create
>> table s.t_part_ascii_065 partition of s.t for values in ( 65 );
>
> Hm, will look into this in a few hours.
My bad. The fix I sent last night for one of the cache flush issues
wasn't quite right. The attached seems to fix it.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
diff --git a/src/backend/utils/cache/relcache.c b/src/backend/utils/cache/relcache.c
index ae77d15..a230b20 100644
--- a/src/backend/utils/cache/relcache.c
+++ b/src/backend/utils/cache/relcache.c
@@ -2516,6 +2516,7 @@ RelationClearRelation(Relation relation, bool rebuild)
bool keep_tupdesc;
bool keep_rules;
bool keep_policies;
+ bool keep_partkey;
bool keep_partdesc;
/* Build temporary entry, but don't link it into hashtable */
@@ -2547,6 +2548,7 @@ RelationClearRelation(Relation relation, bool rebuild)
keep_tupdesc = equalTupleDescs(relation->rd_att, newrel->rd_att);
keep_rules = equalRuleLocks(relation->rd_rules, newrel->rd_rules);
keep_policies = equalRSDesc(relation->rd_rsdesc, newrel->rd_rsdesc);
+ keep_partkey = (relation->rd_partkey != NULL);
keep_partdesc = equalPartitionDescs(relation->rd_partkey,
relation->rd_partdesc,
newrel->rd_partdesc);
@@ -2604,9 +2606,12 @@ RelationClearRelation(Relation relation, bool rebuild)
SWAPFIELD(Oid, rd_toastoid);
/* pgstat_info must be preserved */
SWAPFIELD(struct PgStat_TableStatus *, pgstat_info);
- /* partition key must be preserved */
- SWAPFIELD(PartitionKey, rd_partkey);
- SWAPFIELD(MemoryContext, rd_partkeycxt);
+ /* partition key must be preserved, if we have one */
+ if (keep_partkey)
+ {
+ SWAPFIELD(PartitionKey, rd_partkey);
+ SWAPFIELD(MemoryContext, rd_partkeycxt);
+ }
/* preserve old partdesc if no logical change */
if (keep_partdesc)
{
--
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