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Commit138da72

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Improve description of some WAL records for GIN
The following information is added in the description of some GINrecords:- In INSERT_LISTPAGE, the number of tuples and the right link block.- In UPDATE_META_PAGE, the number of tuples, the previous tail block,and the right link block.- In SPLIT, the left and right children blocks.Author: Kirill Reshke <reshkekirill@gmail.com>Reviewed-by: Michael Paquier <michael@paquier.xyz>Reviewed-by: Andrey Borodin <x4mmm@yandex-team.ru>Discussion:https://postgr.es/m/CALdSSPgnAt5L=D_xGXRXLYO5FK1H31_eYEESxdU1n-r4g+6GqA@mail.gmail.com
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‎src/backend/access/rmgrdesc/gindesc.c‎

Lines changed: 22 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -130,6 +130,9 @@ gin_desc(StringInfo buf, XLogReaderState *record)
130130
appendStringInfo(buf," isdata: %c isleaf: %c",
131131
(xlrec->flags&GIN_INSERT_ISDATA) ?'T' :'F',
132132
(xlrec->flags&GIN_INSERT_ISLEAF) ?'T' :'F');
133+
if (xlrec->leftChildBlkno!=InvalidBlockNumber)
134+
appendStringInfo(buf," children: %u/%u",
135+
xlrec->leftChildBlkno,xlrec->rightChildBlkno);
133136
}
134137
break;
135138
caseXLOG_GIN_VACUUM_PAGE:
@@ -150,10 +153,27 @@ gin_desc(StringInfo buf, XLogReaderState *record)
150153
/* no further information */
151154
break;
152155
caseXLOG_GIN_UPDATE_META_PAGE:
153-
/* no further information */
156+
{
157+
ginxlogUpdateMeta*xlrec= (ginxlogUpdateMeta*)rec;
158+
159+
appendStringInfo(buf,"ntuples: %d",xlrec->ntuples);
160+
if (xlrec->prevTail!=InvalidBlockNumber)
161+
appendStringInfo(buf," prevTail: %u",
162+
xlrec->prevTail);
163+
if (xlrec->newRightlink!=InvalidBlockNumber)
164+
appendStringInfo(buf," newRightLink: %u",
165+
xlrec->newRightlink);
166+
}
154167
break;
155168
caseXLOG_GIN_INSERT_LISTPAGE:
156-
/* no further information */
169+
{
170+
ginxlogInsertListPage*xlrec= (ginxlogInsertListPage*)rec;
171+
172+
appendStringInfo(buf,"ntuples: %d",xlrec->ntuples);
173+
if (xlrec->rightlink!=InvalidBlockNumber)
174+
appendStringInfo(buf," rightlink: %u",
175+
xlrec->rightlink);
176+
}
157177
break;
158178
caseXLOG_GIN_DELETE_LISTPAGE:
159179
appendStringInfo(buf,"ndeleted: %d",

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