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BUG#20310212 PARTITION DDL- CRASH AFTER THD::NOCHECK_REGISTER_ITEM_

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Problem :
---------
Issue-1: The root cause for the issues is that (col1 > 1) is not a
valid partition function and we should have thrown error at much early
stage [partition_info::check_partition_info]. We are not checking
sub-partition expression when partition expression is NULL.

Issue-2: Potential issue for future if any partition function needs to
change item tree during open/fix_fields. We should release changed
items, if any, before doing closefrm when we open the partitioned table
during creation in create_table_impl.

Solution :
----------
1.check_partition_info() - Check for sub-partition expression even if no
partition expression.
[partition by ... columns(...) subpartition by hash(<expr>)]

2.create_table_impl() - Assert that the change list is empty before doing
closefrm for partitioned table. Currently no supported partition function
seems to be changing item tree during open.

Reviewed-by: Mattias Jonsson <mattias.jonsson@oracle.com>

RB: 9345
This commit is contained in:
Debarun Banerjee 2015-06-24 10:27:12 +05:30
commit 0eadadad25
4 changed files with 19 additions and 6 deletions
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2
mysql-test/r/partition_error.result
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@ -1089,7 +1089,7 @@ partition by key (a)
subpartition by hash (sin(a+b))
(partition x1 (subpartition x11, subpartition x12),
partition x2 (subpartition x21, subpartition x22));
ERROR HY000: It is only possible to mix RANGE/LIST partitioning with HASH/KEY partitioning for subpartitioning
ERROR HY000: This partition function is not allowed
select load_file('$MYSQLD_DATADIR/test/t1.par');
load_file('$MYSQLD_DATADIR/test/t1.par')
NULL