ClusterJPA with non-jta Data Source backup? (no replies)
I'm currently using openjpa with mysql connector/j to my mysql cluster (using dbcp2 and jdbc:mysql:loadbalance). I'm doing this in my persistence file using: <property...
View Articledata loss after restart the cluster (1 reply)
I am using Mysql cluster 7.3.7 and got a problem when I shutdown the cluster from management node and again start the cluster I got result with NO data in mysql data node all the data is loss.
View ArticleHow to tune for BatchByteSize (no replies)
Hi, How to tune for BatchByteSize, BatchSize, MaxScanBatchSize and TotalSendBufferMemory ? I need to tune these variables in mysql cluster. Please help me.
View Articlemysqld api node (no replies)
Hi Guys I setup mgm node and two data nodes and I put mysql node in mgm node, I have NDB 7.3 Redhat 6.6. When I do show command, data nodes connected but sql node node not. what is the issue? Also if...
View Articleerror 4243 'Index not found' while adding constraint (1 reply)
Hi, I am getting error 4243 'Index not found' from NDBCLUSTER") 'ALTER TABLE aggregate_metadata ADD CONSTRAINT uniq_aggregate_metadata0aggregate_id0key0deleted UNIQUE (aggregate_id, `key`, deleted)'...
View ArticleNo free node id found for mysqld(API) when executing ndbinfo_sellect_all...
Hello. I'm running MySQL Cluster 7.3.7 on a CentOS 6.6 x64 with two Data nodes, each one in a separate host, and a Management and SQL node on the same host. I'm following the documetation here:...
View ArticleLearn how to ensure business continuity with geographically distributed...
Global data access can greatly expand the reach of your business. Continuent’s multi-site multi-master solutions enable applications to accept database traffic in multiple locations across on-premises...
View ArticleLock wait timeout exceeded; try restarting transaction (no replies)
there are two computer, one act as manage node and data node, the other act as sql node and data node. when i use 155 clients to excute 'insert' statement, after few minutes, here comes the err below:...
View Articlecomposite column for primary key in cluster (no replies)
Hi, Are composite primary keys efficient in mysql cluster? This is script: -------------------- CREATE TABLE `Table1` ( `CONTS_ID` varchar(20) NOT NULL, `ASSET_ID` varchar(20) NOT NULL,...
View ArticleLock wait timeout and other errors (no replies)
Hello. I'm trying to use MySQL Cluster, but sometimes queries take long time and i get error "lock wait timeout exceeded". There are following strings in logs: 2015-02-13 23:41:40 27483 [Note] NDB...
View ArticleNeed help in installation (no replies)
I am trying to follow the instruction of "18.2.2.1 Installing a MySQL Cluster Binary Release on Linux" http://dev.mysql.com/doc/refman/5.6/en/mysql-cluster-install-linux-binary.html , to install MySQL...
View ArticleUnable to start one of the management servers (no replies)
One of my management servers has recently crashed/raid failure. I have reinstalled it (Centos 6) but i'm unable to start the actual ndb_mgmd I am trying to start it via /usr/sbin/ndb_mgmd...
View ArticleCan't start MCM (no replies)
Good afternoon everyone, I'm having troubles when trying to start one of my mcm agents. Everything has been working smoothly for quite a long time, but it has suddenly stopped. When I try to start the...
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Error ndb_mgmd Windows (no replies)
Hello everyone. I am trying to set up a MySQL Cluster on Windows 2008 R2. I tried installing via .msi me I have all set ( Bin & data ) in a folder C: \ mysql I use that as a manager and SQL Server...
View Articlerecommended thread config for 4 cpu data node? (no replies)
I'd like to know if there is, or if anyone has, a recommended ThreadConfig/Lock<x>ThreadtoCPU/MaxNoOfExecutionThreads threads config for a 4 CPU/core data node? Also if it's still recommended to...
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Test My Cluster ? (8 replies)
Hello everyone. I received as a project of a company to make a MySQL clustering on a WAMP environment. We're not going to dwell on the environment "WAMP", just know that I have to do this on Windows....
View ArticleUnable to start Node and API (1 reply)
Hi there, problem is my DB nodes are stuck at starting and API can't get connected. my config.ini file as below: [NDB_MGMD DEFAULT] Portnumber=1186 [NDB_MGMD] NodeId=51 HostName=192.168.168.151...
View ArticleHow Many Licenses/subscription I will be required? (2 replies)
I am new to MySQL Cluster and I am estimating a budget/cost for running a basic MySQL Cluster CGE setup. I am planning to do following setup: 2 data nodes 2 sql nodes 2 management nodes So my question...
View ArticleSome questions - MySQL Cluster (no replies)
Hello everyone. I created a new topic differentiate my two machinations. I have currently implemented this with MySQL Cluster: - 2 data nodes (Windows 7) 191.168.2.251 191.168.2.252 - 2 SQL nodes...
View ArticleNDB memory and disk usage (no replies)
I have an NDB database with a single table and a simple use pattern of very frequent reads and updates of individual rows i.e. no complex joins, aggregates etc. The table is ~200M rows but the...
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