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mdbx: backpost - ITS#8300 fix rebalance after node_move.

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ITS#8258, ITS#7829 fixes checked parent index to see if we were moving
from a left neighbor. Should have just checked to see if current index
was 0, meaning we added on the left. (Parent index may not tell us
anything meaningful after a nested rebalance.)

Includes:

 - ITS#8300 fix node_move
   Don't adjust other cursors when we added a node on the right.

 - ITS#8300 more for node_move fixups
   When moving a node from the right neighbor, a different
   adjustment is needed.

 - ITS#8300 simplify

 - ITS#8300 more for node_move
   When moving a node from one page to another, make sure other cursors'
   parent index gets adjusted too.
This commit is contained in:
Howard Chu
2015-11-04 20:38:30 +00:00
committed by Leo Yuriev
parent 7890eb8a8e
commit ee26517b5d
2 changed files with 43 additions and 25 deletions
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@@ -9,6 +9,7 @@ LMDB 0.9.17 Release Engineering
Fix ITS#8263 cursor_put cursor tracking
Fix ITS#8264 cursor_del cursor tracking
Fix ITS#8299 mdb_del cursor tracking
Fix ITS#8300 mdb_del cursor tracking
Fix ITS#7771 fakepage cursor tracking
Fix ITS#7789 ensure mapsize >= pages in use
Fix ITS#7971 mdb_txn_renew0() new reader slots