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Commit95de10e

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Add commit for smooth transition to file-based AQO storage.
1 parentce94043 commit95de10e

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5 files changed

+55
-2
lines changed

5 files changed

+55
-2
lines changed

‎aqo.c‎

Lines changed: 13 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -23,6 +23,7 @@
2323
#include"path_utils.h"
2424
#include"preprocessing.h"
2525
#include"learn_cache.h"
26+
#include"storage.h"
2627

2728

2829
PG_MODULE_MAGIC;
@@ -199,6 +200,18 @@ _PG_init(void)
199200
NULL
200201
);
201202

203+
DefineCustomBoolVariable(
204+
"aqo.use_file_storage",
205+
"Used for smooth transition from table storage",
206+
NULL,
207+
&aqo_use_file_storage,
208+
false,
209+
PGC_USERSET,
210+
0,
211+
NULL,
212+
NULL,
213+
NULL
214+
);
202215
DefineCustomIntVariable("aqo.join_threshold",
203216
"Sets the threshold of number of JOINs in query beyond which AQO is used.",
204217
NULL,

‎postprocessing.c‎

Lines changed: 11 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -29,6 +29,7 @@
2929
#include"machine_learning.h"
3030
#include"preprocessing.h"
3131
#include"learn_cache.h"
32+
#include"storage.h"
3233

3334

3435
typedefstruct
@@ -823,7 +824,12 @@ aqo_ExecutorEnd(QueryDesc *queryDesc)
823824
}
824825

825826
if (query_context.collect_stat)
826-
stat=get_aqo_stat(query_context.query_hash);
827+
{
828+
if (!aqo_use_file_storage)
829+
stat=get_aqo_stat(query_context.query_hash);
830+
else
831+
stat=aqo_load_stat(query_context.query_hash);
832+
}
827833

828834
{
829835
/* Calculate execution time. */
@@ -873,7 +879,10 @@ aqo_ExecutorEnd(QueryDesc *queryDesc)
873879
automatical_query_tuning(query_context.query_hash,stat);
874880

875881
/* Write AQO statistics to the aqo_query_stat table */
876-
update_aqo_stat(query_context.query_hash,stat);
882+
if (!aqo_use_file_storage)
883+
update_aqo_stat(query_context.query_hash,stat);
884+
else
885+
aqo_store_stat(query_context.query_hash,stat);
877886
pfree_query_stat(stat);
878887
}
879888

‎preprocessing.c‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -65,6 +65,7 @@
6565
#include"aqo.h"
6666
#include"hash.h"
6767
#include"preprocessing.h"
68+
#include"storage.h"
6869

6970

7071
/* List of feature spaces, that are processing in this backend. */

‎storage.c‎

Lines changed: 20 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -28,6 +28,7 @@
2828
#include"machine_learning.h"
2929
#include"preprocessing.h"
3030
#include"learn_cache.h"
31+
#include"storage.h"
3132

3233
#defineAQO_DATA_COLUMNS(7)
3334
HTAB*deactivated_queries=NULL;
@@ -1104,3 +1105,22 @@ add_deactivated_query(uint64 query_hash)
11041105
{
11051106
hash_search(deactivated_queries,&query_hash,HASH_ENTER,NULL);
11061107
}
1108+
1109+
/* *****************************************************************************
1110+
*
1111+
* Implement AQO file storage below
1112+
*
1113+
**************************************************************************** */
1114+
1115+
boolaqo_use_file_storage;
1116+
1117+
void
1118+
aqo_store_stat(uint64queryid,QueryStat*stat)
1119+
{
1120+
}
1121+
1122+
QueryStat*
1123+
aqo_load_stat(uint64queryid)
1124+
{
1125+
returnNULL;
1126+
}

‎storage.h‎

Lines changed: 10 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,10 @@
1+
#ifndefSTORAGE_H
2+
#defineSTORAGE_H
3+
4+
#include"aqo.h"
5+
6+
externboolaqo_use_file_storage;
7+
8+
externvoidaqo_store_stat(uint64queryid,QueryStat*stat);
9+
externQueryStat*aqo_load_stat(uint64queryid);
10+
#endif/* STORAGE_H */

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