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  1. MariaDB Server
  2. MDEV-10128

Port MySQL 5.7 select count() optimization

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      Current handler::records() is not fully usable as InnoDB could roll back the statement on some cases and you may not continue after that, it should be int records(ha_rows *n_rows) and server should check as these errors will abort the current query:
      case HA_ERR_LOCK_DEADLOCK:
      case HA_ERR_LOCK_TABLE_FULL:
      case HA_ERR_LOCK_WAIT_TIMEOUT:
      case HA_ERR_QUERY_INTERRUPTED:

      see commit 40ec5373c0 on 5.7

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              Assignee:
              marko Marko Mäkelä
              Reporter:
              jplindst Jan Lindström
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