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-rw-r--r--src/backend/access/nbtree/nbtdedup.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/src/backend/access/nbtree/nbtdedup.c b/src/backend/access/nbtree/nbtdedup.c
index 9e15ae57586..93a025b0a95 100644
--- a/src/backend/access/nbtree/nbtdedup.c
+++ b/src/backend/access/nbtree/nbtdedup.c
@@ -166,8 +166,8 @@ _bt_dedup_pass(Relation rel, Buffer buf, Relation heapRel, IndexTuple newitem,
* maxpostingsize).
*
* If state contains pending posting list with more than one item,
- * form new posting tuple, and actually update the page. Else
- * reset the state and move on without modifying the page.
+ * form new posting tuple and add it to our temp page (newpage).
+ * Else add pending interval's base tuple to the temp page as-is.
*/
pagesaving += _bt_dedup_finish_pending(newpage, state);
@@ -184,7 +184,8 @@ _bt_dedup_pass(Relation rel, Buffer buf, Relation heapRel, IndexTuple newitem,
* stop merging together tuples altogether. The few tuples
* that remain at the end of the page won't be merged together
* at all (at least not until after a future page split takes
- * place).
+ * place, when this page's newly allocated right sibling page
+ * gets its first deduplication pass).
*/
if (state->nmaxitems == 5)
_bt_singleval_fillfactor(page, state, newitemsz);