NDB Cluster : MySQL's Distributed MultiMaster Storage Engine

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3
votes
2answers
907 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 ...
1
vote
2answers
805 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 ...
2
votes
1answer
346 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 ...
1
vote
1answer
105 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 ...
1
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1answer
395 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 ...
0
votes
1answer
74 views

NDB Cluster seems to ignore foreign_key_checks=OFF

According to MySQL documentation on the local foreign_key_checks variable Beginning with MySQL Cluster NDB 7.3.2, setting this variable has the same effect on NDB tables as it does for InnoDB ...
0
votes
1answer
99 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 ...
0
votes
1answer
443 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" ...
2
votes
0answers
676 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 ...
2
votes
0answers
93 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 ...
1
vote
0answers
298 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 ...
1
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0answers
149 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 ...
1
vote
0answers
549 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 ...
0
votes
0answers
13 views

MySQL Cluster Disk Data Tables - worth it?

I'm working on improving the performance of our 4-node MySQL cluster for a webapp with lots of DB writes. We've got a Solr index sitting 'on top' of the SQL in order to give us fast querying, and we ...
0
votes
0answers
23 views

3TB limit in MySQL NDB engine

The NDB documentation comparing NDB and InnoDB states that NDB has a 3TB limit, but it implies that it is not a hard limit, and is hardware or performance expectation dependent: (Practical upper ...
0
votes
0answers
74 views

High CPU usage for in-memory NDBCLUSTER

I have a few NDBCLUSTER tables in a MySQL cluster setup. Each table has less than 25,000 rows. All tables in question are set up to be fully in-memory for both indexes and data. The tables are ...
0
votes
0answers
85 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 ...
0
votes
0answers
2k 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 ...
0
votes
0answers
163 views

MySQL Cluster management node does not start (node has different checksum)

Please help me to start data management node. I have installed cluster with autoinstaller and it was working. Now i'm trying to change config (i want to change amount of DataMemory) and run cluster. I ...
0
votes
0answers
49 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 ...