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MDEV-23596: Assertion `tab->ref.use_count' failed in join_read_key_un…
…lock_row The issue here was that the query was using ORDER BY LIMIT optimzation where the access method was changed from EQ_REF access to an index scan (index that would resolve the ORDER BY clause). But the parameter READ_RECORD::unlock_row was not reset to rr_unlock_row, which is used when the access method is not EQ_REF access.
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Varun Gupta
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Aug 27, 2020
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