Planet MySQL Planet MySQL: Meta Deutsch Español Français Italiano 日本語 Русский Português 中文
Showing entries 1 to 10 of 98 10 Older Entries

Displaying posts with tag: partitioning (reset)

Fun with Bugs #41 - Bugs Fixed in MySQL 5.7.11
+0 Vote Up -0Vote Down

I've just noted that Oracle had released new versions of MySQL on February 5, 2016 formally, so while these days I am mostly thinking about the ways to do support properly, remembering my colleagues and trying to understand some of RocksDB internals, it's time to postpone all these and write about bugs again. This time about some of the public bug reports from MySQL Community and Oracle engineers that were fixed by Oracle in MySQL 5.7.11.

As usual, I'll try to mention who had reported a bug and who verified it, as I think that names …

  [Read more...]
MySQL Partition Manager is Open Source
+0 Vote Up -0Vote Down

At Yahoo, we manage a massive number of MySQL databases spread across multiple data centers.

We have thousands of databases and each database has many partitioned tables. In order to efficiently create and maintain partitions we developed a partition manager which automatically manages these for you with minimal pre configuration.

Today, we’re releasing MySQL Partition Manager. You can check out the code on GitHub.

We’re looking forward to interacting with the MySQL community and continue developing new features.

- MySQL Database Engineering Team, Yahoo

Fun with Bugs #40 - Bugs fixed in MySQL 5.7.10
+0 Vote Up -0Vote Down

MySQL 5.7.10, the first release after MySQL 5.7 GA announcement, appeared almost a week ago. It's interesting to check what bugs reported by MySQL Community were fixed in this version, hence this post (that had to wait during the weekdays busy with usual support work). As usual, I'll concentrate mostly on InnoDB, replication and optimizer-related bug fixes and highlight names of those who reported and verified each bug.

Let's start with InnoDB. The following bugs reported by MySQL Community users were fixed:




  [Read more...]
Sample employees database migrated to GitHub
+0 Vote Up -0Vote Down

It's migration time. There was another project that I use often and was still in Launchpad. The Sample Employees Database is now on GitHub, under the same license it had before (CC A-SA 3).

Figure 1 - Employees database
This database is interesting because it is not too small (like Sakila) and not too big. It has enough data to allow you to test in a non trivial way.
Installation and testInstalling the database is easy:

$ git clone …





  [Read more...]
Circular Partitioning scheme for a fully Automated Archival / Purge process with Events
+0 Vote Up -0Vote Down

Partitioning The advantage of partitioning is that we can drop / truncate the partitions which is real quick and done in seconds. It does lock the table (metadata lock) during this operation but only for few seconds. That duration depends on the number of pages in use in the buffer pool. With MySQL 5.6 it is possible to exchange the partitions , which helps in moving archived data to another table with similar structure.
   
Fully Automated archival / purge 

Consider a fast growing table which is partitioned to help the queries and help quick archival/purge. The queries if specify the …



  [Read more...]
Fun with Bugs #36 - Bugs fixed in MySQL 5.6.25
+0 Vote Up -0Vote Down

Two days ago Oracle had released MySQL 5.6.25, so it's time to check what bugs reported by MySQL Community are fixed there. As usual, I'll mention both a bug reporter and engineer who verified the bug. Please, pay attention to fixes in replication and partitioning - if you use these features (or queries to INFORMATION_SCHEMA with a lot of complex tables in your database), please, consider upgrading ASAP.

The following …

  [Read more...]
7 quick MySQL performance tips for the small business
+0 Vote Up -0Vote Down

We’ve heard lots in recent years about Big Data and the alternative models of data management and processing, like Hadoop and NoSQL. But truth be told, relational databases are still the workhorses of most of today’s small and medium sized businesses. Relational DBs date back over 40 years and SQL skills are fairly common, and they’re known to be highly secure.

 

MySQL is the world’s second most popular relational database management system (RDMS) and is the most popular open-source version of the database. It’s easily accessible and is often known to be part of the LAMP web development stack, standing for …

  [Read more...]
InnoDB Native Partitioning – Early Access
Employee_Team +0 Vote Up -0Vote Down

The InnoDB labs release includes a snapshot of the InnoDB Native Partitioning feature.

To better understand why we implemented this, we need to start with some background on tables, storage engines, and handlers. In MySQL an open instance of a table has a handler object as an interface to the table’s storage engine. For a partitioned table there is a main table handler that implements the partitioning feature, but for storage, each partition has its own handler. This worked fairly well, but the more partitions you had the more overhead from the per partition handlers. So to remove this overhead for …

  [Read more...]
Best Practices for Partitioned Collections and Tables in TokuDB and TokuMX
+0 Vote Up -1Vote Down

In my last post, I gave a technical explanation of the performance characteristics of partitioned collections in TokuMX 1.5 (which is right around the corner) and partitioned tables in relational …

  [Read more...]
Understanding the Performance Characteristics of Partitioned Collections
+0 Vote Up -0Vote Down

In TokuMX 1.5 that is right around the corner, the big feature will be partitioned collections. This feature is similar to partitioned tables in Oracle, MySQL, SQL Server, and Postgres. A question many have is “why should I use partitioned tables?” In short, it’s complicated. The answer depends on your workload, your schema, and your database of choice. For example, this …

  [Read more...]
Showing entries 1 to 10 of 98 10 Older Entries

Planet MySQL © 1995, 2016, Oracle Corporation and/or its affiliates   Legal Policies | Your Privacy Rights | Terms of Use

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.