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Type:
Bug
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Status: Closed (View Workflow)
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Priority:
Critical
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Resolution: Fixed
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Affects Version/s: 10.1.22
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Component/s: Server
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Labels:None
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Environment:Windows
This is due to:
Assertion failed: m_lock_type == 3, file C:\MariaDB-10.1\MariaDB\sql\handler.cc, line 2564
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by
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DBUG_ASSERT(m_lock_type == F_UNLCK);
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Indeed, the m_lock_type variable is declared and described in handler.h as:
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private:
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/**
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The lock type set by when calling::ha_external_lock(). This is
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propagated down to the storage engine. The reason for also storing
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it here, is that when doing MRR we need to create/clone a second handler
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object. This cloned handler object needs to know about the lock_type used.
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*/
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int m_lock_type;
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However, external_lock can be called in handler::ha_external_lock line 5828 with lock_type set to F_UNLCK but with this variable not having been set and still having a different value. On return, this function does set it line 5835 but only when there is no error.