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MDEV-6139: UPDATE w/ join against MRG_MyISAM table with read-only sub-table failsUPDATE w/ join against MRG_MyISAM table with read-only sub-table fails

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The problem was that on opening all tables TL_WRITE, than local tables which is not updated set to TL_READ, but underlying tables of MyISAMmrg left untouched.

Prartition engine has not this problem.

All cases where lock_type assigned is not changed because call of virtual function is not cheap.
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unknown
2014-04-28 09:13:53 +03:00
parent 772aa0c575
commit 968f4d4e25
7 changed files with 77 additions and 1 deletions
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4
sql/handler.cc
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@@ -5285,6 +5285,10 @@ void signal_log_not_needed(struct handlerton, char *log_file)
DBUG_VOID_RETURN;
}
void handler::ha_set_lock_type(enum thr_lock_type lock)
{
table->reginfo.lock_type= lock;
}
#ifdef TRANS_LOG_MGM_EXAMPLE_CODE
/*