NDB Cluster : MySQL's Distributed MultiMaster Storage Engine

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How much data is needed to show MySQL Cluster's performance scaling vs. InnoDB

I am evaluating MySQL Cluster as a possible replacement for an InnoDB schema. So far, I have tested it with 10s of MB of data, and found MySQL Cluster slower than InnoDB; however, I have been told ...
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2k views

Which one to use? InnoDB Replication or MySQL Cluster?

I am building a url shortener and I use InnoDB as the storage engine for link data. I will start with a single VPS containing both application instance and MySQL database instance on the same Virtual ...
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1answer
26 views

What happens when a MySQL Cluster node is disconnected

I am trying to design a multi-master clustered MySQL database which will be spread through out the country. The main reason for having a cluster is so that when the internet, in one location (or ...
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1answer
16 views

MySQL NDBcluster 7.3 limitation on Table Joining in a single SQL statement

I am a novice user of Mysql database and recently my company is evaluating MySQL Cluster for its shared nothing architecture and synchronised replication. However my colleagues informed me that the ...
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1answer
952 views

mysql cluster table full error

I installed a new mysql cluster on windows (for evaluation). I created a table using command below. After I insert just over 1 million records into the table it gives me the "table datadump is full" ...
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1answer
170 views

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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1answer
113 views

Mysql Cluster Exceeding MaxBufferedEpochs

I have an mysql cluster which have 4 api nodes, 2 management nodes and 4 data nodes. Today, I was having problems while trying to connect database and all queries was hanging at "Opening tables" ...
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1answer
408 views

ndbcluster: Error: 1114, The table is full, when using table

I have searched for a while about this error. I have a MySQL cluster running with 2 data nodes. The cluster houses a few other databases. I have a dump of a database in --tab format from another ...
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1answer
273 views

getting “table is full” error even if the table size is much smaller than tablespace

Currently I am using MySQL NDBCluster 7.3.5. I have created one UNDOFILE hhme.dat with INITIAL_SIZE=200m. Also one tablespace hhmefep_tbs with DATAFILE hhmefep_tbs.dat having INITIAL_SIZE=500M ...
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980 views

MySQL Cluster LOAD DATA too slow

mysql-5.5.22 ndb-7.2.6 cluster 64bit running on Centos 6 with each node installed on the same Citrix Xen Server communicating via a virtual private network. Each node has 4GB of RAM, 4 vCPUs and 10GB ...
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0answers
103 views

Can't connect to MySQL Cluster Storage (data) nodes

I've deployed a MySQL Cluster with a few nodes, and I want to access the storage nodes directly from another machine using NDBAPI. When I tried to connect from the same host it worked, but when I try ...
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Data nodes stuck at starting

After updating the config.ini (I updated my MaxNoOfAttributes, MaxNoOfTables, MaxNoOfOrderedIndexes,etc.) on my management node and running the ndb_mgmd with --initial command. I can't seem to start ...
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26 views

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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56 views

MySQL Cluster set DataMemory

I have MySQL Cluster with 5 nodes on 3 servers Cluster Configuration --------------------- [ndbd(NDB)] 2 node(s) id=2 @192.168.1.111 (mysql-5.6.24 ndb-7.4.6, Nodegroup: 0, *) id=3 ...
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36 views

Mysql Cluster Restore A Backup To A Database With A Different Configuration

I have an mysql cluster which have 4 data nodes and number of replicas is 2. So I have 2 node groups with 2 data nodes in a every node group. I planing to add 4 data nodes more to this cluster. ...
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Mysql Cluster Data Node Hangs on Phase 5 While Starting

I have an mysql cluster which have 4 api nodes, 2 management nodes and 4 data nodes. Today one of data nodes has gone offline due missing heartbeat. After i tried to restart, it hangs on phase 5. I ...
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104 views

Temporary table not supported in MySQL Cluster

I am new to MySQL Cluster and as I don't have opportunity to try it now I am interested in one thing. In the official pages of MySQL Cluster, there is a statement about temporary tables for NDB ...
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4k views

getting SQL Error (1452): Cannot add or update a child row: a foreign key constraint fails (Unknown error code)

I am getting error with MySQL NDB Cluster 7.3.5 as described below: I have two tables: -User Profiles -User Services User services is a child table which contains foreign key constraint ...
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560 views

Delete operation mysql cluster

I am trying to delete some entries from table on a cluster and I get this error ERROR 1297 (HY000): Got temporary error 233 'Out of operation records in transaction coordinator (increase ...
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0answers
205 views

Error in alter table reorganize partition for MySQL Cluster

My cluster contains 48 million rows and cluster contains 4 storage nodes . After that I add online storage node and executed alter table 'customer_tbl' reorganize partition. Some parameters of ...
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0answers
775 views

MySQL cluster stuck in start phase 4, how to proceed?

Over the weekend our cluster we set up for evaluation had one of its data nodes lose network connectivity briefly. This was while another data node was in the middle of a restart (which had been going ...
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27 views

Configuring additional data node

After configuring the data node and the config.ini for the management node. When I run the ndb_mgmd -f /var/lib/mysql-cluster/config.ini --initial The table data that were created for previous ndbd ...
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42 views

Configuring MySQL Cluster

I'm having trouble in configuring my data nodes. My setup is 1 management node, 1 SQL node and 2 data nodes. I'm running mysql-cluster-gpl-7.4.8-linux-glibc2.5-x86_64 on my cluster. My question is do ...
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14 views

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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17 views

Mysql Cluster Disk Storage Problem

We are currently create a Mysql Cluster with ndb distribution storage. We have a very large set of data so we want to config the ndb using the tablespace to store data in disk. I follow this link to ...
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22 views

MySQL Cluster in-memory only table

I am testing MySQL cluster with NDBCLUSTER engine. We intend to use MySQL cluster DB to contain READ PERFORMANCE critical tables which will reside only in memory. We have also tried the MEMORY ...
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34 views

Mysql Cluster Reorganize Partitions On Partial Cluster

I have changed MAX_ROWS on partial (while a data node disconnected) cluster then reorganized partitions. When i try to restart data node which was disconnected i get following error: 2015-11-13 ...
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34 views

Degraded insert performance when selecting from the join of two ndb tables

I am seeing degraded insert performance when inserting data that is selected from the join of two (or more) ndb tables. Minimum query to reproduce: INSERT INTO tableC SELECT col1,col2,col3 FROM ...
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599 views

Lock wait timeout exceeded; try restarting transaction in NDB

I encountered an error while using an opensource product with a mysql cluster. The error stacktrace is shown below. Caused by: java.sql.SQLException: Lock wait timeout exceeded; try restarting ...
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228 views

Not getting satisfactory performance improvement with NDB Cluster

Since last few days, I am trying to improve performance of MySQL NDB Cluster but can't figure out what I am missing/being mistaken in defining/tuning parameters. I have these configurations running ...