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Commitb402076

Browse files
author
Nikita Glukhov
committed
Add GUC jsonb_partial_decompression
1 parente0a9476 commitb402076

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3 files changed

+20
-6
lines changed

3 files changed

+20
-6
lines changed

‎src/backend/utils/adt/jsonb_util.c

Lines changed: 8 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -159,7 +159,8 @@ static JsonbValue *fillCompressedJsonbValue(CompressedJsonb *cjb,
159159
uint32offset,JsonValue*result);
160160
staticJsonbContainer*jsonbzDecompress(JsonContainer*jc);
161161

162-
booljsonb_sort_field_values= true;/* GUC */
162+
booljsonb_sort_field_values= true;/* GUC */
163+
booljsonb_partial_decompression= true;/*GUC */
163164

164165
JsonValue*
165166
JsonValueUnpackBinary(constJsonValue*jbv)
@@ -2636,7 +2637,6 @@ CompressedDatumDecompress(CompressedDatum *cd, Size offset)
26362637
cd->decompressed_len=offset;
26372638
}
26382639

2639-
#if0/* unused */
26402640
staticvoid
26412641
CompressedDatumDecompressAll(CompressedDatum*cd)
26422642
{
@@ -2651,7 +2651,6 @@ CompressedDatumDecompressAll(CompressedDatum *cd)
26512651
cd->decompressed_len=cd->total_len;
26522652
}
26532653
}
2654-
#endif
26552654

26562655
staticvoid
26572656
jsonbzInitContainer(JsonContainerData*jc,CompressedJsonb*cjb,intlen)
@@ -2907,7 +2906,8 @@ jsonbzIteratorInit(JsonContainer *jc)
29072906
Jsonb*jb= (Jsonb*)cjb->datum->data;
29082907
JsonbContainer*jbc= (JsonbContainer*)((char*)jb+cjb->offset);
29092908

2910-
//CompressedDatumDecompressAll(cjb->datum);
2909+
if (!jsonb_partial_decompression)
2910+
CompressedDatumDecompressAll(cjb->datum);
29112911

29122912
returnjsonbIteratorInit(jc,jbc,cjb);
29132913
}
@@ -2922,7 +2922,10 @@ jsonbzInit(JsonContainerData *jc, Datum value)
29222922
cjb->offset= offsetof(Jsonb,root);
29232923

29242924
CompressedDatumInit(cd,value);
2925-
CompressedDatumDecompress(cd,256);
2925+
if (!jsonb_partial_decompression)
2926+
CompressedDatumDecompressAll(cd);
2927+
else
2928+
CompressedDatumDecompress(cd,256);
29262929

29272930
jsonbzInitContainer(jc,cjb,VARSIZE_ANY_EXHDR(cd->data));// cd->total_len - VARHDRSZ
29282931
}

‎src/backend/utils/misc/guc.c

Lines changed: 10 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -2094,6 +2094,16 @@ static struct config_bool ConfigureNamesBool[] =
20942094
NULL,NULL,NULL
20952095
},
20962096

2097+
{
2098+
{"jsonb_partial_decompression",PGC_USERSET,DEVELOPER_OPTIONS,
2099+
gettext_noop("Use partial pglz decompression for jsonb."),
2100+
},
2101+
&jsonb_partial_decompression,
2102+
true,
2103+
NULL,NULL,NULL
2104+
},
2105+
2106+
20972107
/* End-of-list marker */
20982108
{
20992109
{NULL,0,0,NULL,NULL},NULL, false,NULL,NULL,NULL

‎src/include/utils/jsonb.h

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -413,6 +413,7 @@ extern void JsonbHashScalarValueExtended(const JsonbValue *scalarVal,
413413
externintreserveFromBuffer(StringInfobuffer,intlen);
414414
externvoidappendToBuffer(StringInfobuffer,constvoid*data,intlen);
415415

416-
externbooljsonb_sort_field_values;/* GUC */
416+
externbooljsonb_sort_field_values;/* GUC */
417+
externbooljsonb_partial_decompression;/* GUC */
417418

418419
#endif/* __JSONB_H__ */

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