Add CREATE INDEX deduplication assertions.
Add two assertions that verify the assumptions about posting list tuple space accounting and suffix truncation made within nbtsort.c.
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@ -908,6 +908,7 @@ _bt_buildadd(BTWriteState *wstate, BTPageState *state, IndexTuple itup,
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* assume that suffix truncation neither enlarges nor shrinks new high key
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* when applying soft limit, except when last tuple has a posting list.)
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*/
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Assert(last_truncextra == 0 || isleaf);
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if (pgspc < itupsz + (isleaf ? MAXALIGN(sizeof(ItemPointerData)) : 0) ||
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(pgspc + last_truncextra < state->btps_full && last_off > P_FIRSTKEY))
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{
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@ -983,6 +984,7 @@ _bt_buildadd(BTWriteState *wstate, BTPageState *state, IndexTuple itup,
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ii = PageGetItemId(opage, OffsetNumberPrev(last_off));
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lastleft = (IndexTuple) PageGetItem(opage, ii);
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Assert(IndexTupleSize(oitup) > last_truncextra);
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truncated = _bt_truncate(wstate->index, lastleft, oitup,
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wstate->inskey);
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if (!PageIndexTupleOverwrite(opage, P_HIKEY, (Item) truncated,
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