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Oracle tweaks MySQL with milestone update

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OpenWorld While the news about NoSQL has garnered much attention, Oracle has quietly published a development milestone release (DMR) for MySQL.

The MySQL 5.6.3 DMR includes a major revision of the software’s optimizer, which the company claims will make file-sort optimizations up to three times faster by searching more intelligently and dumping unneeded data during the process.

Index condition pushdowns were also speeded up, with Oracle reporting that operation times for the function had been cut from 15 seconds down to 90 milliseconds.

Batched Key Access has been added to augment the Multi-Range Read capabilities added in the 5.6.2 DMR, enabling indexes to be sorted by data sequence for faster searching. In tests this dropped some execution times from 2000 seconds to 10, albeit with a “sufficiently large” join buffer.

More instrumentation has been added to the performance schema in the new release and further improvements have been made in InnoDB and replication.

With over 40 sessions devoted to MySQL at the Oracle OpenWorld conference this week, it’s clear that the company is maintaining its investment in the MySQL code. That said, some developers have commented privately that they fear for the long-term development of the platform, particularly its perceived creeping commercialization.

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