api nodes and sql nodes (1 reply)
I am confused by the difference between api nodes and sql nodes in Adding MySQL Cluster Data Nodes Online when I saw 5.5 Reference Manual(chapter:17.3.13.2) . Does somebody help me explain them?...
View ArticleHow to deal with conflict in Master/Master (3 replies)
Hi, I have two NDB clusters(A and B). And one replication link is configured between them (Geo replication). 1. Both A and B have same DB schema and same data 2. They can receive write requests and...
View ArticleWhat is the maximum data size that can be managed by MySql Cluster 7.3 ? (3...
Hi there, My question is regarding the maximum memory use managed by Mysql Cluster 7.3 , is there any enhancement compared to the 7.2 version whose maximum manageable memory size was 3To ( i guess) ?...
View ArticleUnknown internal error during "ANALYZE TABLE" operation (1 reply)
hi, I have just finished upgrading from (mysql-5.1.51 ndb-7.1.10) to (mysql-5.5.31 ndb-7.2.13), and I'm doing the "ANALYZE TABLE" operation now. But there are errors during the operation,such as:...
View ArticleNDBDs Crashed and Fail to Start after Adding (Tables with) Foreign Keys (1...
Hello, Recently, when I was modifying the definition of some tables (using `ndbcluster`), all the NDBDs crashed in the cluster. Specifically, I was trying to setup the foreign keys to a few tables. I...
View ArticleClusterJ and timestamp fields (no replies)
Using the ClusterJ API to initialize an instance of a Domain object: Test t1 = session.newInstance(com.nextpath.p11poc.model.Test.class); we get the following exception (yes, the table was created...
View ArticleERROR 1005 (HY000): Can't create table 'ok.prova' (errno: 136) (1 reply)
We use mysql-cluster 7.1.10 when I try to create table I receive this error: ERROR 1005 (HY000): Can't create table 'ok.programming' (errno: 136) DROP TABLE IF EXISTS `programming`; CREATE TABLE...
View ArticleBackup restore error: Failed to initialize consumers (no replies)
When I try to restore my backup on my cluster, I obtain always this error: Failed to initialize consumers I need your help, I spent many hours to try to implement a backup. Thank you! Here some...
View ArticleRestore from Disk (no replies)
Using version 7.3.2, is there any way to extract data (to SQL queries, or CSV) from the disk? For example on my data nodes I have the folder ndb_NODEID_fs, inside there are a multitude of files. Is...
View ArticleDisappointed after evaluating MySQL cluster (1 reply)
In 2008, our team used MySQL cluster 5.x as a production DB, if I recall correctly, it was a pre-GA version. It crashed every a single week which was a big headache to our operation. Then we upgraded...
View ArticleCluster nodes all of a sudden out of sync (no replies)
Hello All, I have a 4 node MySQL Cluster running MySQL-Cluster-server-gpl-7.2.10. It contains two data nodes (running ndbd) and two management nodes. I won't go into all the configuration details yet...
View Articlemysql-ndb API server always looses connection (1 reply)
Hi forum I got a weird problem with my ndb-cluster. It consists of 2 storage nodes and two ndb-master which are all in the same subnet. The cluster works without problems. But I get a problem if I try...
View ArticleUpgrade from 7.2 to 7.3, MaxBufferedEpoc mass warnings (1 reply)
Hello, We have this working beta setup (Linux envs) : 3 API nodes (7.2.12), 2 MGM nodes (7.2.12), 4 NDBD nodes (7.2.12) It seems like there is no incompatibility between 7.2 and 7.3 branches...
View ArticleOpensource vs. Enterprise editions (no replies)
Hi, I am using MySQL Cluster for an application I am working on. At the moment in the prototyping phase and I just took the Community edition for testing purposes. Now that I am close to launch the...
View Articlewhy sql node can't connect to management? (no replies)
I install mysql cluster in three machine. the sql node cant startup, but in the management host, get into "ndb_mgm", and type "show" in the comman line, following is the message: Cluster Configuration...
View ArticleMYSQL Cluster 7.2.5 Maximum DataMemory size (no replies)
My Current Mysql Cluster version is 7.2.5 and the dataMemory size is 42G .And I want planned to increase DataMemory 72G .I want to know Mysql Cluster Maximum dataMemory size is ? Thanks
View ArticleHow define correct values for cluster (no replies)
We are moving from MyIsam & InnoDB to a cluster (mysql-cluster-gpl-7.3.2-linux-glibc2.5-x86_64). This means we already have a bunch of databases that we need to convert. Most tables are converted...
View ArticleIs there any parallel quries example with AQL? (no replies)
As we know, the push-down join can make join 70x faster with elimination of round trip between API node and data nodes. In some document or slide, they also mention that push-down join can make join...
View Articlecom.mysql.clusterj.ClusterJDatastoreException: Datastore exception. Return...
Hi, my_cluster -version 7.2.6 I have two ndb nodes each with 32G RAM and 8 core processer. I am having load of 3million accounts. When I start aggregating data in my bucket after few hours i get...
View ArticleUnable to create event in database. (no replies)
Hi, I try to start a cluster with two nodes. config.ini: [ndb_mgmd] hostname=192.168.9.199 datadir= /home/mysql_cluster/ndb_data [ndbd default] # Options affecting ndbd processes on all data nodes:...
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