Comments on: Replacing MEMORY storage engine with MySQL Cluster

By: admin

admin — Mon, 13 Jun 2011 12:03:36 +0000

Bhaskar – absolutely.

By default, all MySQL Cluster data is stored in memory *but* you can optionally store any columns other than indexes on disk. In fact you can select exactly which columns should be stored on disk rather than in memory.

You can see the details in the disk-data section of the MySQL Cluster documentation.

By: bhaskar

bhaskar — Mon, 13 Jun 2011 10:20:34 +0000

We have configured a mysql 7.1 cluster with 2 nodes and a management server. but whole db is residing on ram and takes up huge amount of memory. I dont want this in memory database feature what to do ?

Also. is there anything which is equivalent to tablespaces in mysql as in oracle?

By: admin

admin — Wed, 23 Feb 2011 09:39:30 +0000

Hi Rajnish,

if ndb_table_no_logging was turned on when your tables was created then the contents of the tables will not be persisted to disk; if off then they will.

A common error that can empty the databases is starting the data nodes (ndbd process) with the –initial option, you should *only* do that when you first create the database or else all of your data will be lost.

Andrew.

By: Rajnish

Rajnish — Tue, 22 Feb 2011 19:57:20 +0000

hi Team,
i have configured single host mysql clustering as refer in the docs . but when i restart the mysql cluster all data vanish ,i also enable the ndb_table_no_logging parameter , but still all data vanished .
i used mysql Server version: 5.1.51-ndb-7.1.10-cluster-gpl-log MySQL Cluster Server (GPL)

any idea ??