MySQL's Distributed Database.

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Difference between SQL node and Data Node

In a MySQL cluster, there are several different types of nodes: Management Node, SQL Node, Data Node, API Node, What are the differences between the latter three types?
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What is the Best way to set Disaster recovery setup for percona Xtra DB Cluster?

We do have a Percona XtraDB Cluster(Master-Master-Master) setup in one country. Now we want to setup a disaster recovery setup in some other country. Please provide us the best possible ways to do ...
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MySQL cluster concurrency

I have a little application that executes select queries against a MySQL cluster. By using 1 thread to read a record the latency is x. By using 2 threads to read records concurrently the avg latency ...
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Adding Data Nodes Online - Data Won't Redistribute

I have gone through the process of adding data nodes to my MySQL Cluster, using the guidelines provided here: https://dev.mysql.com/doc/refman/5.6/en/mysql-cluster-online-add-node-example.html. The ...
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How to export mysql databases with different ENGINE?

I'm setting up MySQL Cluster. As it uses ENGINE=NDBCLUSTER, how could I export my databases from MySQL Server specifying the ENGINE? Is there a way to do this? All my tables are MYISAM
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ndb_desc - Unable to Connect to Management Server

I'm having issues with the ndb_desc program working in MySQL Cluster. I have additional [mysqld(API)] nodes available for connection from any host: [ndbd default] NoOfReplicas=2 DataMemory=16384M ...
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Cannot start MySQL cluster with single node

For some testing I have installed MySQL Cluster. I can get it to work with configuration suggested in Lunix guick start guide. My configuration: [ndb_mgmd] hostname=localhost datadir=/home/vmUser/...