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2900. By Kristian Nielsen on 2010-12-27

Merge Percona patch row_based_replication_without_primary_key.patch into MariaDB.

This patch improves the selection of index to use to apply row-based
DELETE and UPDATE events on tables with no primary key (original code
picks the first index unconditionally).
If ANALYZE TABLE is done, the index cardinalities will be compared and
the best index will be used.

Fixes some problems in the original patch:

 - Without ANALYZE TABLE, rec_per_key statistics is not available; in this
   case the original patch could choose a really bad index, even ignoring
   a primary key.

 - The original patch did not consider multi-column keys correctly, and
   could thus pick a less desirable single-column key over a good
   multi-column index.

Also fixes Bug#58997, and adds test cases.

2899. By Michael Widenius on 2010-12-13

merge with 5.1
(Includes patch for overrun detected by valgrind thanks to previous my_alloca() -> my_malloc() patch)

2898. By Michael Widenius on 2010-12-13

When compiling with valgrind, change my_alloca() to use my_malloc()
- This allows us to detect missing my_afree() calls and also find overruns (when running with valgrind) to alloca() areas.
- Added missing my_afree() calls
- Fixed wrong call to my_afree()

2897. By Kristian Nielsen on 2010-12-10

Fix wrong merge of patch for Bug#46639.

2896. By Vladislav Vaintroub on 2010-12-06

merge LP Bug#686184

2895. By Vladislav Vaintroub on 2010-12-06

merge

2894. By Michael Widenius on 2010-12-05

Removed compiler warning

2893. By Michael Widenius on 2010-12-05

merge with 5.1-release

2892. By Michael Widenius on 2010-12-04

Automatic merge

2891. By Vladislav Vaintroub on 2010-12-02

merge