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Re: ndb watchdog overslept
Posted by: Mikael Ronström
Date: February 21, 2017 05:27AM

--single-transaction is actually not really supported for MySQL Cluster.
Cut from manual:
The --single-transaction option and the --lock-tables option are mutually exclusive because LOCK TABLES causes any pending transactions to be committed implicitly.

This option is not supported for MySQL Cluster tables; the results cannot be guaranteed to be consistent due to the fact that the NDBCLUSTER storage engine supports only the READ_COMMITTED transaction isolation level. You should always use NDB backup and restore instead.

To dump large tables, combine the --single-transaction option with the --quick option.

So when you make a mysqldump, avoid the single-transaction part, this will
remove the need for massively large transactions while restoring the data.

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Re: ndb watchdog overslept
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