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Commit5a3015c

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author
Nikita Glukhov
committed
Add GUC jsonb_partial_decompression
1 parentcae8663 commit5a3015c

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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)
@@ -2573,7 +2574,6 @@ CompressedDatumDecompress(CompressedDatum *cd, Size offset)
25732574
cd->decompressed_len=offset;
25742575
}
25752576

2576-
#if0/* unused */
25772577
staticvoid
25782578
CompressedDatumDecompressAll(CompressedDatum*cd)
25792579
{
@@ -2588,7 +2588,6 @@ CompressedDatumDecompressAll(CompressedDatum *cd)
25882588
cd->decompressed_len=cd->total_len;
25892589
}
25902590
}
2591-
#endif
25922591

25932592
staticvoid
25942593
jsonbzInitContainer(JsonContainerData*jc,CompressedJsonb*cjb,intlen)
@@ -2844,7 +2843,8 @@ jsonbzIteratorInit(JsonContainer *jc)
28442843
Jsonb*jb= (Jsonb*)cjb->datum->data;
28452844
JsonbContainer*jbc= (JsonbContainer*)((char*)jb+cjb->offset);
28462845

2847-
//CompressedDatumDecompressAll(cjb->datum);
2846+
if (!jsonb_partial_decompression)
2847+
CompressedDatumDecompressAll(cjb->datum);
28482848

28492849
returnjsonbIteratorInit(jc,jbc,cjb);
28502850
}
@@ -2859,7 +2859,10 @@ jsonbzInit(JsonContainerData *jc, Datum value)
28592859
cjb->offset= offsetof(Jsonb,root);
28602860

28612861
CompressedDatumInit(cd,value);
2862-
CompressedDatumDecompress(cd,256);
2862+
if (!jsonb_partial_decompression)
2863+
CompressedDatumDecompressAll(cd);
2864+
else
2865+
CompressedDatumDecompress(cd,256);
28632866

28642867
jsonbzInitContainer(jc,cjb,VARSIZE_ANY_EXHDR(cd->data));// cd->total_len - VARHDRSZ
28652868
}

‎src/backend/utils/misc/guc.c

Lines changed: 10 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -2046,6 +2046,16 @@ static struct config_bool ConfigureNamesBool[] =
20462046
NULL,NULL,NULL
20472047
},
20482048

2049+
{
2050+
{"jsonb_partial_decompression",PGC_USERSET,DEVELOPER_OPTIONS,
2051+
gettext_noop("Use partial pglz decompression for jsonb."),
2052+
},
2053+
&jsonb_partial_decompression,
2054+
true,
2055+
NULL,NULL,NULL
2056+
},
2057+
2058+
20492059
/* End-of-list marker */
20502060
{
20512061
{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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