Planet MySQL Planet MySQL: Meta Deutsch Español Français Italiano 日本語 Русский Português 中文
Showing entries 1 to 2

Displaying posts with tag: ndb_restore (reset)

Surprises in store with ndb_restore
+1 Vote Up -1Vote Down

While doing some routine fiddling regarding some topic I've now forgotten, I discovered that ndb_restore was doing something quite surprising. It's been common wisdom for some time that one can use ndb_restore -m to restore metadata into a new cluster and automatically have your data re-partitioned across the data nodes in the destination cluster. In fact, this was the recommended procedure for adding nodes to a cluster before online add node came along. Since MySQL Cluster 7.0, though, ndb_restore hasn't behaved that way, though that change in behavior doesn't seem to be documented and most don't know that the change ever took place.

I'll go through some of the methods you can use to find information about the partitioning strategy for an NDB table, talk a bit about why ndb_restore stopped working the way most everyone expected

  [Read more...]
ndb_restore - best practice
+0 Vote Up -0Vote Down
A really simple best practice:

Make sure there are NO mysql servers connected to the Cluster while you do the restore!
It can cause the restore to fail badly and potentially even your cluster.

Also, make sure (if you use disk data) to remove all data files in the datadirs of the data nodes as they are not removed when doing an --initial ... I have written a bug report about that...

(i will update the severalnines/config scipts to include this best practice!)
Showing entries 1 to 2

Planet MySQL © 1995, 2014, Oracle Corporation and/or its affiliates   Legal Policies | Your Privacy Rights | Terms of Use

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.