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Be more explicit when doing ordered scan on columnar cat. tables (#5026) 

systable_getnext already uses ForwardScanDirection if relation has any
open indexes, but let's be more explicit doing ordered scan on columnar
catalog tables.
pull/5032/head
Onur Tirtir 2021-07-09 13:24:27 +03:00 committed by GitHub
parent ab873c6b58
commit ea5fe022a4
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 12 additions and 9 deletions
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21
src/backend/columnar/columnar_metadata.c
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@ -270,7 +270,7 @@ WriteColumnarOptions(Oid regclass, ColumnarOptions *options, bool overwrite)
SysScanDesc scanDescriptor = systable_beginscan_ordered(columnarOptions, index, NULL,
1, scanKey);
HeapTuple heapTuple = systable_getnext(scanDescriptor);
HeapTuple heapTuple = systable_getnext_ordered(scanDescriptor, ForwardScanDirection);
if (HeapTupleIsValid(heapTuple))
{
if (overwrite)
@ -340,7 +340,7 @@ DeleteColumnarTableOptions(Oid regclass, bool missingOk)
SysScanDesc scanDescriptor = systable_beginscan_ordered(columnarOptions, index, NULL,
1, scanKey);
HeapTuple heapTuple = systable_getnext(scanDescriptor);
HeapTuple heapTuple = systable_getnext_ordered(scanDescriptor, ForwardScanDirection);
if (HeapTupleIsValid(heapTuple))
{
CatalogTupleDelete(columnarOptions, &heapTuple->t_self);
@ -393,7 +393,7 @@ ReadColumnarOptions(Oid regclass, ColumnarOptions *options)
SysScanDesc scanDescriptor = systable_beginscan_ordered(columnarOptions, index, NULL,
1, scanKey);
HeapTuple heapTuple = systable_getnext(scanDescriptor);
HeapTuple heapTuple = systable_getnext_ordered(scanDescriptor, ForwardScanDirection);
if (HeapTupleIsValid(heapTuple))
{
Form_columnar_options tupOptions = (Form_columnar_options) GETSTRUCT(heapTuple);
@ -563,7 +563,8 @@ ReadStripeSkipList(RelFileNode relfilenode, uint64 stripe, TupleDesc tupleDescri
palloc0(chunkCount * sizeof(ColumnChunkSkipNode));
}
while (HeapTupleIsValid(heapTuple = systable_getnext(scanDescriptor)))
while (HeapTupleIsValid(heapTuple = systable_getnext_ordered(scanDescriptor,
ForwardScanDirection)))
{
Datum datumArray[Natts_columnar_chunk];
bool isNullArray[Natts_columnar_chunk];
@ -821,7 +822,8 @@ ReadChunkGroupRowCounts(uint64 storageId, uint64 stripe, uint32 chunkGroupCount)
HeapTuple heapTuple = NULL;
uint32 *chunkGroupRowCounts = palloc0(chunkGroupCount * sizeof(uint32));
while (HeapTupleIsValid(heapTuple = systable_getnext(scanDescriptor)))
while (HeapTupleIsValid(heapTuple = systable_getnext_ordered(scanDescriptor,
ForwardScanDirection)))
{
Datum datumArray[Natts_columnar_chunkgroup];
bool isNullArray[Natts_columnar_chunkgroup];
@ -1013,7 +1015,8 @@ ReadDataFileStripeList(uint64 storageId, Snapshot snapshot)
snapshot, 1,
scanKey);
while (HeapTupleIsValid(heapTuple = systable_getnext(scanDescriptor)))
while (HeapTupleIsValid(heapTuple = systable_getnext_ordered(scanDescriptor,
ForwardScanDirection)))
{
Datum datumArray[Natts_columnar_stripe];
bool isNullArray[Natts_columnar_stripe];
@ -1117,11 +1120,11 @@ DeleteStorageFromColumnarMetadataTable(Oid metadataTableId,
ModifyState *modifyState = StartModifyRelation(metadataTable);
HeapTuple heapTuple = systable_getnext(scanDescriptor);
while (HeapTupleIsValid(heapTuple))
HeapTuple heapTuple;
while (HeapTupleIsValid(heapTuple = systable_getnext_ordered(scanDescriptor,
ForwardScanDirection)))
{
DeleteTupleAndEnforceConstraints(modifyState, heapTuple);
heapTuple = systable_getnext(scanDescriptor);
}
systable_endscan_ordered(scanDescriptor);