MDEV-6581 Writing to TEMPORARY TABLE not possible in read-only
don't mark transactions read-write if no real storage engine is affected (only binlog writes).
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@ -1238,7 +1238,8 @@ int ha_commit_trans(THD *thd, bool all)
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uint rw_ha_count= ha_check_and_coalesce_trx_read_only(thd, ha_info, all);
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/* rw_trans is TRUE when we in a transaction changing data */
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bool rw_trans= is_real_trans && (rw_ha_count > 0);
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bool rw_trans= is_real_trans &&
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(rw_ha_count > !thd->is_current_stmt_binlog_disabled());
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MDL_request mdl_request;
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if (rw_trans)
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