NDB Cluster : MySQL's Distributed MultiMaster Storage Engine

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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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39 views

Why so much traffic between SQL Node and Data Node?

For a MySQL cluster I use one SQL Node and two DataNodes. On one Data Node I have started the linux command tcpdump and have observed the communication between the SQL and Data Node while I have ...
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Maximum number of records in MySQl NDB

I have a MySQL cluster table that consist of 1 primary key int (32) and 10 varchars of size 100. I use disk data tables. I have three data nodes with together 22GB RAM. How many records can I store ...
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56 views

MySQL cluster DataMemory and DiskPageBufferMemory parameters

I want to setup a MySQL cluster. The amount of data is more than double the amount of RAM. I have 3 Data Nodes each with 8GB RAM. QUESTIONS What is a good rule for the DataMemory and ...
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26 views

Query optimization ndbcluster + order by

I'm not really all too familiar with the ndbcluster storage engine of MySQL, but I've recently written an application that does some very simple queries. However, a co-worker of mine (who is now on ...
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11 views

What is the use case for the configuration cache in mysql cluster?

The configuration on the management node on a mysql ndb cluster is cached by default and not reread on start/restart. I think about disabling it, because people keep forgetting to explicit reload the ...
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60 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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57 views

MySQL cluster performance very poor on Amazon

We have currently a project running where we need to store 1 to 20,30 million 500B to 2kB records. We need to use MySQL cluster on 4 EC2 instances (8GB Ram, 2 cores) and ephemeral storage (Records ...
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2answers
149 views

Mysql cluster fast inserts but slow selects

I have a mysql cluster with 3 Data Nodes and one SQL node. Curently I have 1million 1kb records. The inserts are very fast, takes only a few ms. But the selects are very slow >20s. All machines are ...
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72 views

What is a mysqld process in a MySQL cluster?

As I know, a mysqld process is a kind of a router of a MySQl cluster. It directs requests to the right ndbd node. Assuming I have 3 ndbd nodes on 3 different machines and I don't use replication. How ...
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113 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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551 views

MySQL Cluster - Table is full [Error 1114] while still creating tables

I am trying to forward engineer a MySQL Workbench model with about 100 tables to a development single-node cluster and, while creating the 51th table, I end up getting a "1114 table is full" error, ...
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180 views

Alter mysql database engine doesn't work from cluster to other

I got into this issue when I tried to alter my database table engine to InnoDB from ndbcluster, It did not work. But When I changed engine from InnoDB to ndbcluster it worked. It did not throw any ...
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91 views

Windows Service Management Node Won't Start

I'm trying to set up a basic Cluster on my Win7 PC for testing. But I am stuck at the first hurdle. I have installed the Management Node as a Service: ...
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2answers
249 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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70 views

ERROR while doing coalesce partition Mysql Cluster

My table contains 3299000 rows. My Mysql Cluster contains 2 storage nodes with NoOfReplicas=2. By default it contains 2 partitions and after that i added 3 partitions more one by one using command ...
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1answer
46 views

Load balancing MySQL ndbcluster

I have successfully setup ndbcluster version 7.1.26. This contains 2 data nodes[NDBD], 2 mysql [MYSQLD] nodes and one management [MGMD] node. Replication works successfully. My Web application is ...
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98 views

Redo Logs Mysql Cluster

The mysql cluster has 4 directories namely D8 D9 D10 D11 for redo logfiles. But while inserting into table only one redo directory is used. I ran following command to get redo information "all dump ...
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91 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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1answer
89 views

Data usage increases initially when reorganize partition mysql cluster

In my MySQL cluster, the data usage of 4 data nodes is approximately 77%. I added a new data node online, and attempted to reorganize partition to redistribute data among all data nodes. But before ...
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1answer
548 views

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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2answers
635 views

Backup plan for MySQL NDB cluster databse not innoDB

I have a Database which will grow more than 250GB all data is in NDB engine(2 datanodes) and no other mysql engine used for data store. What are the best approaches or plans for MySQL Cluster NDB ...
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383 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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214 views

How to removing or reduce the size of redo logs in MySQL cluster

Can anybody tell me that how can we reduce the redo log file size or can we remove the redo log file size in MySQL Cluster and also what will be the impact of it on performance of cluster.Also can we ...
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1answer
182 views

How to solve the error “Error 'Got error 0 'No error' from NDBCLUSTER' on query”?

I'm currently working with a large network of MySQL 5.1 DBs (using MyISAM tables) and I'm evaluating a move to MySQL Cluster. I would like to have the MySQL Cluster replicate off of one of the ...
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1answer
122 views

MySQL Cluster Steps To Recover Data If Catstrophic Failure Occurs

I want to know if a catstrophic failure occurs (like a power outage), and all nodes in MySQL Cluster are shutdown in cluster then data will be lost even though a backup was taken? Or it possible that ...
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1k views

MySQL how to release memory used up by SELECT

I executed an INSERT IGNORE combined with SELECT from large table. The SELECT took up 16GB of memory and went into SWAP before I terminated it with CTRL+C. INSERT IGNORE INTO sid(sid) SELECT sid ...
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Is MySQL Clustering a viable option for a DB expecting 5TB of data in 5 years?

We plan to implement MySQL Clustering.The database should support 5 years of data and expected data/year is 1TB. When we created a test enviornment with the DB size as 200GB, NDB Cluster took more ...
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2answers
1k views

MySQL Cluster: Problem Connecting the SQL node

In a MySQL cluster I have three hosts, one with a manager node, and the other two are each both a data node and sql node. Connecting to the manager is possible, however only as [ndbd] and not ...
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239 views

fast bulk incrementing in MySQL

I have one big table foobar describing a many-to-many-relation and containing millions of foo's, millions of bar's and every bar having several hundereds of foo's -> billions of rows. CREATE TABLE ...
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1answer
253 views

Slow-running query on clustered MySQL environment

I've got a very simple query, directly equivalent to SELECT * FROM sometable t WHERE somecol = 'somevalue' ORDER BY createdon DESC LIMIT 0,20000; When I run this query on my non-clustered ...
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506 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 ...
0
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1answer
243 views

Better diagnostics when starting ndb nodes?

I have an ubuntu linux server that uses mysql cluster 7.2.5 x64. Whenever I start an ndb node and check with ndb_mgm -e show, it stays in "starting" state for a long time. When I use top to check the ...
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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 ...
2
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1answer
264 views

Redesigning a multi-instance MySQL server for performance and resiliency

I've got a single MySQL server which currently runs N separate MySQL instances on, which are rapidly growing beyond the capabilities of that box. Is it possible to have an active-active MySQL ...
2
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1answer
376 views

Dual management node for mysql clustering

I currently have mysql cluster setup and running. Here is my current setup: 1 - management node 2 - data nodes 2 - mysql nodes I wish to incorporate a failover for the management node. The ...
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1answer
164 views

MySQL row length is almost the triple of what I expect

I shamelessly took title and content from this question and adapted it to my similar yet different problem: This is the table I have: CREATE TABLE `test` ( `field1` MEDIUMINT(8) UNSIGNED NOT ...
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1answer
112 views

getting error while installing memcached_function

now i am working with memcached with mysql cluster 7.2 for that i am installed libevent-1.4.14b-stable.tar.gz memcached-1.4.5.tar.gz libmemcached-0.8.tar.gz then ...
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1answer
366 views

Unable to connect to MySQL cluster database

I am unable to connect to mysql cluster database after starting my management node, data node, mysql node. I made the necessary changes by adding the loadbalance in the dbURL. But I am not able to ...
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3answers
559 views

Need help configuring Memcached to store values in MySQL Cluster

I am working on a Memcached implementation with MySQL Cluster 7.2. I have installed and configured memcached with following parameters: PORT="11211" USER="mysql" MAXCONN="1024" CACHESIZE="1024" ...
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1answer
692 views

mysql, changing tables from myisam to ndb

Gents, Converting a table from myisam to ndb via: ALTER TABLE piwik_log_profiling ENGINE NDBCLUSTER; This will fail with: BLOB column 'query' can't be used in key specification with the used ...
1
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1answer
179 views

MySql cluster data node replication

What I'd like to do is to replicate data nodes within a cluster not only for backup/failover purposes but also for scale-out reasons. Is this possible? If not: why? If yes: how do I do it? Actually, ...
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4answers
2k views

MySQL Cluster RAM requirement

From MySQL 5.1, the data doesn't need to be entirely in memory anymore. I've read that the indexed columns (I think the entire index structure) must still be in memory (MySQL High Availability, 2010, ...
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3answers
2k views

What's the difference between master and slave nodes in MySQL Cluster?

I use MySQL Cluster 7.1.15a. I have 2 nodes, ndb_mgm -e shows: [ndbd(NDB)] 2 node(s) id=3 @X (mysql-5.1.56 ndb-7.1.15, starting, Nodegroup: 0, Master) id=4 @Y (mysql-5.1.56 ndb-7.1.15, ...
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2answers
4k views

MySQL Sharding vs MySQL Cluster

Considering performance only, can a MySQL Cluster beat a custom data sharding MySQL solution? sharding = horizontal partitioning When I refer to sharding, I'm considering sharding made in the ...
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2answers
291 views

MySQL statement in Project Voldemort site

I've just entered Project Voldemort (a NoSQL key-value datastore) site, and saw something interesting: "Unlike MySQL replication, both reads and writes scale horizontally" Well, seems like ...
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2answers
424 views

Using all the CPU cores by NDBD and MySQL

We are running MariaDB which is a fork of MySQL with NDB cluster engine. The cluster includes one mysql node and two ndb data nodes. While benchmarking the cluster, we are trying to make a bottleneck ...
2
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1answer
933 views

Does mysqld --ndb-cluster need to be run on MySQL Cluster data nodes?

I have my management node and sql node on the same server, and 2 data nodes (3 machines in total). Do I need to run ./mysqld --ndb-cluster (or /etc/init.d/mysql-server start) on 1) the data nodes, or ...
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MySQL Cluster — Storing table data on data nodes [duplicate]

Possible Duplicate: MySQL Cluster — Storing table data on data nodes I have setup MySQL Cluster with the MySQL server node and the Management node on a single server, and 2 data nodes ...
3
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1answer
216 views

How do I configure a MySQL Cluster with a redundant mysqld host?

this is my first post here, so go easy on me. I'm trying to rebuild my data architecture (which is currently a set of one primary MySQL server and a redundant fallback; the tables are primarily ...