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Showing entries 1 to 10 of 34751 10 Older Entries
ScaleDB is Hiring a Senior Software Engineer for DBMS Kernel
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ScaleDB extends MySQL for high-velocity high-volume data, enabling near real-time analytics across massive streams of data. Like Hadoop, ScaleDB leverages a cluster of commodity machines with low-cost spinning disks for storage, mitigating the typical trade-offs between data fidelity and the volume of data and time analyzed. NoSQL and Hadoop are excellent choices for unstructured data, or data variety challenges. However, if your data is structured time-series data, and generated at high-velocity and high-volume, ScaleDB is the tool for you. On a nine-node cluster, ScaleDB inserts millions of rows per second and queries up to 1000 times faster, more than …

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LDAP Authentication with MariaDB PAM Plugin
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This is getting more and more common, so I wanted to provide the steps required to get LDAP authentication working with MariaDB PAM plugin.

Unless you’re already familiar with setting up the MariaDB PAM plugin, I’d first recommend getting this to work with a standard Linux user (steps 1-4), then once all is working fine, progress to the LDAP users (steps 5-10). (And if you do not want to test this for the Linux user account, then you may skip steps #2 and #3.)

  1. Enable plugin by running the following from the command line client:
    INSTALL SONAME 'auth_pam';
    

    You should see an entry like this afterward in …

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Write-heavy workload vs the MongoDB optimizer
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We experienced wasted disk IO from the MySQL query optimizer a few years back and fixed it via FORCE INDEX hints. I think I am experiencing wasted disk IO from the MongoDB optimizer during recent tests with the insert benchmark.

The problem with MySQL requires a query for which more than one index can be used. The problem query was a single table SELECT statement. The optimizer must figure out the best index and calls the …

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MySQL 5.7.8 - mysqlpump caveat
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MySQL 5.7.8-rc2 was released today, and features a new server utility called mysqlpump. This utility contains a number of major improvements over mysqldump including:

  • Parallel processing of databases, and of objects within databases, to speed up the dump process
  • For dump file reloading, faster secondary index creation for InnoDB tables by adding indexes after rows are inserted
  • Better control over which databases and database objects (tables, views, stored programs, user accounts) to dump
  • Dumping of user accounts as …
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MySQL 5.7.8 : features, bugs and rumors
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I’ve had a look at a preview release of MySQL 5.7.8, some time before it became available to the general public (perks and duties of an Oracle ACE) and I found a few interesting things among the release notes and the tarball itself:


  • There is a new tool named mysqlpump, which is intended as a replacement for mysqldump, with parallel processing, …

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The MySQL 5.7.8 Release Candidate is Available
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The MySQL Development team is very happy to announce that MySQL 5.7.8, the second 5.7 Release Candidate (RC2), is now available for download at dev.mysql.com (use the “Development Releases” tab).

We have fixed over 500 bugs in 5.7.8. This is on top of what we delivered in 5.7.7 and on top of bug fixes up-merged from 5.6. We have also added JSON support, which we previewed in a Labs release back in April. You can find the full list of changes and bug fixes in the …

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Percona XtraBackup 2.2.12 is now available
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Percona is glad to announce the release of Percona XtraBackup 2.2.12 on August 3, 2015. Downloads are available from our download site or Percona Software Repositories.

Percona XtraBackup enables MySQL backups without blocking user queries, making it ideal for companies with large data sets and mission-critical applications that cannot …

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InnoDB checkpoint strikes back
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In my recent benchmarks for MongoDB, we can see that the two engines WiredTiger and TokuMX struggle from periodical drops in throughput, which is clearly related to a checkpoint interval – and therefore I correspond it to a checkpoint activity.

The funny thing is that I thought we solved checkpointing issues in InnoDB once and for good. There are bunch of posts on this issue in InnoDB, dated some 4 years ago.  We did a lot of research back then working on a fix for Percona Server

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Deploy Asynchronous Replication Slave to MariaDB Galera Cluster 10.x using ClusterControl
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Combining Galera and asynchronous replication in the same MariaDB setup, aka Hybrid Replication, can be useful - e.g. as a live backup node in a remote datacenter or reporting/analytics server. We already blogged about this setup for Codership/Galera or Percona XtraDB Cluster users, but master failover did not work for MariaDB because of its different GTID approach. In this post, we will show you how to deploy an asynchronous replication slave to MariaDB Galera Cluster 10.x (with master failover!), using GTID …

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MySQL Installer 5.7
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MySQL Installer 5.7 (5.7.8 rc, published on Monday, 03 Aug 2015)

Showing entries 1 to 10 of 34751 10 Older Entries

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