diff options
| author | Vadim B. Mikheev <vadim4o@yahoo.com> | 1999-04-22 08:19:59 +0000 |
|---|---|---|
| committer | Vadim B. Mikheev <vadim4o@yahoo.com> | 1999-04-22 08:19:59 +0000 |
| commit | 3888b53a58e474cbb2b38d5e84b4b749b1caa663 (patch) | |
| tree | 1dd97c333fc5f059a00c678c10fe2080ba4baca0 /src/backend/access/nbtree/nbtinsert.c | |
| parent | 00fbb64bed15f8d9e169decc7a234caef70c0df9 (diff) | |
Fix duplicating ROOT page in concurrent updates.
Diffstat (limited to 'src/backend/access/nbtree/nbtinsert.c')
| -rw-r--r-- | src/backend/access/nbtree/nbtinsert.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/backend/access/nbtree/nbtinsert.c b/src/backend/access/nbtree/nbtinsert.c index 308aa9e9a6d..23ff4262d50 100644 --- a/src/backend/access/nbtree/nbtinsert.c +++ b/src/backend/access/nbtree/nbtinsert.c @@ -7,7 +7,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.37 1999/04/12 16:56:08 vadim Exp $ + * $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.38 1999/04/22 08:19:59 vadim Exp $ * *------------------------------------------------------------------------- */ @@ -398,6 +398,7 @@ _bt_insertonpg(Relation rel, OffsetNumber maxoff; bool shifted = false; bool left_chained = (lpageop->btpo_flags & BTP_CHAIN) ? true : false; + bool is_root = lpageop->btpo_flags & BTP_ROOT; /* * If we have to split leaf page in the chain of duplicates by new @@ -570,9 +571,20 @@ _bt_insertonpg(Relation rel, * reasoning). */ +l_spl:; if (stack == (BTStack) NULL) { - + if (!is_root) /* if this page was not root page */ + { + elog(DEBUG, "btree: concurrent ROOT page split"); + stack = (BTStack) palloc(sizeof(BTStackData)); + stack->bts_blkno = lpageop->btpo_parent; + stack->bts_offset = InvalidOffsetNumber; + stack->bts_btitem = (BTItem) palloc(sizeof(BTItemData)); + /* bts_btitem will be initialized below */ + stack->bts_parent = NULL; + goto l_spl; + } /* create a new root node and release the split buffers */ _bt_newroot(rel, buf, rbuf); _bt_relbuf(rel, buf, BT_WRITE); |