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MySQL, one of the crucial celebrated open supply databases on earth, has just reached edition 5.6.
unlike typical releases, the unique MySQL version brings accelerated efficiency, scalability, reliability and manageability.
“MySQL 5.6 unlock Candidate obtained tremendous comments from the neighborhood and helped us to correctly ripen the expertise to promulgate accepted Availability.”
“the unique elements and enhancements that MySQL 5.6 offers additional exhibit Oracle’s investment in using MySQL innovation, making MySQL a pretty apt for nowadays’s most demanding net, Cloud and embedded application requirements,” stated Tomas Ulin, vice chairman of MySQL Engineering.
Highlights of MySQL 5.6:
• unique points and enhancements in MySQL 5.6 can breathe create to MySQL clients in the MySQL community edition.;
• MySQL 5.6 provides enhanced linear scalability, assisting clients to leverage up to date hardware capabilities;
• enhanced query Execution instances and diagnostics provided via an better MySQL Optimizer diagnostics is now obtainable;
• unique efficiencies in how outcomes sets are chosen, sorted and returned deliver sizeable improvement in question execution instances;
• enhanced performance throughput and application availability with an superior InnoDB storage engine;
• Crash-safe Replication enables the binary log and slaves to instantly help appropriate positions within the replication circulation in case of a crash, and resume replication without administrator intervention;
• Checksums withhold statistics integrity throughout the cluster with the aid of instantly detecting and alerting on errors;
• unique instrumentation allows for clients to improved display screen most resource intensive queries, objects, clients and functions;
• unique summaries with aggregated records grouped through question, thread, user, host and expostulate are too purchasable;
• The enhancements enable for less complicated default configuration with below five percent overhead;
• MySQL 5.6 contains a few additional enhancements fondness Geographic suggestions systems - exact Spatial operations, more advantageous IPv6 compliance and optimized server defaults.
an entire listing of fastened bugs, updates and unique elements can too breathe create in the finished reputable changelog, encapsulated into the archive.
down load MySQL 5.6 at the second from Softpedia.
In January 2010, Oracle bought solar Microsystems for $7.four billion -- a deal that protected the MySQL database administration...
gadget among the software and hardware components brought beneath Oracle's control. considering the fact that then, Oracle has persevered to present MySQL as a free, open supply product and has introduced a number of MySQL traffic variations as feasible options to that -- and to its flagship Oracle Database application.
these now not common with Oracle MySQL databases could determine the variations between the products difficult, specially when attempting to choose between the open supply and commercial editions. right here they behold on the a lot of Oracle MySQL items to provide you with a stronger view of how they evaluate to and fluctuate from one yet another, so you can greater with no grief opt for the one it really is appropriate in your company.
MySQL neighborhood Server (or neighborhood version) is what many recall into account after they suppose of MySQL. It presents the fundamental aspects you expect with a database administration system, together with the skill to create tables, views, triggers and kept strategies. It too includes partitioning and replication capabilities, in addition to connectors for part languages, together with Open Database Connectivity, Java Database Connectivity and .net.Open source MySQL advantages, limitations
Oracle presents the MySQL neighborhood Server as an open source product this is freely obtainable for over 20 structures, together with home windows, Linux, Unix and Mac. The group edition includes varied storage engines, reminiscent of InnoDB and MyISAM, reminiscence and community Database (NDB). furthermore, the Oracle MySQL Workbench community device fashions, develops and administers databases in the community version.
Oracle additionally presents the MySQL Cluster edition, a model of the group version. MySQL Cluster comprises the identical basic aspects as the neighborhood version, however provides a dispensed, multi-master structure to scale MySQL across part commodity programs and to win certain vice tolerance.
MySQL Cluster, just fondness the community version, is freely obtainable for download and is in accordance with the accepted Public License (GPL). The license means that you can entry and adjust the source code and divide the updated code as Part of your device.
If the usage of both of those variants, besides the fact that children, you ought to adhere to the phrases of the GPL. as an instance, if you embed the neighborhood version in your software, you possess to win every solitary of the application's source code available under the GPL. before distributing a edition that makes expend of the community version or MySQL Cluster, win positive you entirely understand the GPL phrases.industrial vs. open supply MySQL
if you can not win an open source version work, but soundless wish to implement MySQL, that you would breathe able to select one among Oracle's three commercial items: MySQL typical version, MySQL traffic version or MySQL Cluster carrier Grade edition (CGE).
The common version offers lots of the fundamentals you win with the MySQL neighborhood edition, including language connectors, replication capabilities, and the MyISAM and InnoDB database engines. You additionally win MySQL Workbench regular edition, which supports extra facets than MySQL Workbench community, similar to being in a position to automate database documentation.
The traffic edition builds on the commonplace edition with points selected to the enterprise. as an example, you win router services, partitioning capabilities and the NDB storage engine every solitary ordinary in the group version, however no longer within the regular edition. Plus, Oracle makes the MySQL Workbench traffic edition appliance accessible in the enterprise edition. This edition of the device presents extra elements than both MySQL Workbench neighborhood or MySQL Workbench ordinary version.
The commercial enterprise edition additionally offers a few superior add-ons now not attainable within the community edition or criterion edition. as an instance, it contains materiel to monitor MySQL servers, again up facts and implement traffic security, as well as materiel related to scalability and tall availability.
Cluster CGE expands on the traffic edition through proposing uphold for superior statistics set sizes. It too contains MySQL Cluster manager, which automates management projects such as performing improvements, backups, reconfigurations, database tuning and on-line scaling. Plus, this version helps lively geographical replication, which makes it feasible to divide clusters geographically for scalability and catastrophe restoration.
All three traffic products, when licensed with an annual subscription, additionally proffer Oracle Premier succor at no extra can charge. Premier uphold provides clients with access to product updates, usher elements and, of route, technical suggestions, which you consequence not win with the group version.
together with the three commercial versions, Oracle too presents MySQL Cloud carrier, which is built on MySQL traffic edition and, based on Oracle, offers every solitary of the merits of that version. You too win self-provider provisioning and integration with Oracle platform as a carrier and infrastructure as a service.Embedded MySQL database alternate options
Oracle additionally offers its three traffic MySQL variants to unbiased application providers (ISVs), value-added resellers (VARs) and usual materiel manufacturers (OEMs) for embedding MySQL databases into their application. The embedded product offerings are comparable to the typical traffic choices, except that Premier usher isn't covered. in case you requisite Premier aid, you requisite to pay added.
moreover the three industrial variations, the embedded software too comprises a fourth edition: MySQL traditional version. The traditional edition is attainable only to ISVs, VARs and OEMs that license MySQL as an embedded database. This version is comparable to the common version, apart from that it does not aid the InnoDB storage engine, nor does Oracle supply MySQL Workbench for this edition.
Oracle too does not post the expense of embedded licenses, unlike its criterion commercial products and cloud provider. for example, Oracle naturally lists the annual subscription costs for the criterion version, which rush from $2,000 for a server with as much as 4 sockets to $four,000 for a server with five or extra sockets. although, to win the rate of the embedded license for the common version, you should contact MySQL Embedded sales at once.picking out between MySQL editions
evidently, there's greater to MySQL than handiest the free, open source versions (group and Cluster). you could too choose between the three traffic editions (common, enterprise and Cluster CGE), as well as the classic edition if you are embedding MySQL. Plus, you possess the MySQL Cloud provider as an extra option.
if you map to divide your device beneath the phrases of the GPL, breathe positive you at the least trust one of the open supply variants, unless you require the added elements that embrace the enterprise edition or MySQL Cloud provider. The open supply editions were commonly carried out and are supported by means of a spacious person neighborhood. That referred to, win certain you totally recall into account how the GPL works and the artery the Oracle MySQL databases disagree from one a different earlier than making any ultimate selections on open supply vs. commercial MySQL.
starting with MySQL or Oracle is the preparatory step that most will imply if in case you possess your eyes set on becoming a database administrator. you probably possess any constraints that win attending mediocre classes difficult, you could breathe taught SQL online. There are on-line courses for Oracle, too, that you can recall at your desired tempo and convenience. since data storage is on the coronary heart of every solitary agencies, there’s a unexpectedly starting to breathe claim for database experts in the allied domains of tips assurance and safety. genesis a career in database administration skill becoming a database administrator (DBA) who handles a variety of capabilities related to database storage, development, setting up, checking out, troubleshooting, retrieval, and safety. considering that enterprises expend great records programs to store suggestions, you are going to commonly labor as a DBA with information communication and community materiel analysts who will design, rush assessments, and investigate techniques fondness WANs (broad area networks), LANs (local enviornment networks), corporate intranets, and the cyber web.
So, right here’s the artery to win the ball rolling for your profession within the domain of database administration.1. win a Bachelor’s diploma
Most database administrators hold a Bachelor’s degree, and you should possess one, too — preferably in suggestions techniques, desktop science, or the administration of guidance programs (MIS), given that employers this present day choose such applicants. Your chosen bachelor’s diploma classes may soundless ideally consist of courses that cowl subject matters fondness database systems, internet web page functions, discrete buildings, facts mining and records structure, data communications, databases and distributed systems, as well as database management programs. apart from your diploma, win positive you are trying doing an internship that introduces you to quite a number projects, which you may should consequence as a database administrator. With this adventure, you could possibly possess an Part over your opponents.2. recall on-line courses
in case you don’t possess a university degree but soundless aspire to start a career in database administration, you could hunt online associate diploma lessons provided via a pair of colleges in the container of laptop science, tips methods, and database programming. if you possess no training or undergo in desktop science but are nevertheless drawn to the database administration landscape, that you may behold at various the waters with the aid of taking on ar certificates path in programming or laptop office systems.three. breathe trained SQL
here's a primary step in genesis your profession in database administration. in view that SQL is the programming language that’s used for writing database queries, you are going to requisite to breathe taught it. breathe it enrolling in a lecture margin route or deciding upon a certificates in IT or programming that emphasizes SQL in specific, should you compass to a decision to study SQL online, you may possess options galore. basically, something you gain learning of, you're going to possess to gain learning of SQL anyway. So, it can pay to center of attention on this regular query language, which is supported by using a few relational databases.
if you chance to recall SQL lessons, you're going to determine that most lessons are focused on MySQL, which is essentially the most familiar database that runs on both Linux and windows. PostgreSQL is a further prevalent SQL database that tech groups use. You can too recall SQL certification exams after you possess some abilities in the box. however, in case you intent to win tricky yet prestigious certifications just fondness the MCSE statistics Platform (for database professionals who create enterprise-stage records solutions in cloud environments or on-premises) or MCSE enterprise Intelligence (for database experts managing the edifice and deployment of traffic intelligence reports and options), you should breathe ready to achieve the time and exertion that passing such certifications calls for.four. breathe taught Oracle
If Oracle is more your trend, that you may study Oracle online or in any other case in a means that could train and behold at various your database abilities in a great selection of territory areas. which you could soak up Oracle certification classes that proffer a number of tracks and specialties. whereas researching SQL helps construction DBAs, in selected, who requisite to deal with coding, Oracle helps application DBAs who labor for corporations that want third-celebration software comparable to PeopleSoft, Oracle, and many others. So, purpose to win mighty fundamentals in the event you determine to breathe taught Oracle and recall a behold at to win some hands-on adventure after getting mastered the fundamentals.5. gain learning of to differentiate Between the classes and choose for that reason
For some individuals, Microsoft SQL Server is misnamed as “SQL,” but SQL is different. basically, recollect to possess a transparent theory of MySQL (open-source database), MS SQL (Microsoft’s relational database management equipment), and Oracle SQL (for working with SQL in Oracle database). Database administration is a shrimp bit different in every solitary these areas in keeping with the change in supported programming languages, server-aspect scripts, APIs and other access strategies, partitioning strategies, and so forth. reckoning on where you requisite your career to start from and reach, you should determine which of these you are looking to learn. on account that many classes that facilitate you to breathe trained online can breathe create at the present time, you simply deserve to consequence some homework to check which of them would succor your career probably the most and are the revise healthy in your skill stage to shortlist probably the most valued certifications and programs so you might take.Conclusion
beginning a profession in database administration doesn’t necessarily imply you requisite to delivery labor as a DBA.
Many specialists who labor today as DBAs as soon as started their careers as records analysts and database developers — and you, too, can celebrate in their footsteps after earning your Bachelor’s diploma. whereas the job of an information analyst would win you become common with the collection and analysis of records contained in databases, working as a database developer would require you to collect counsel (that might then breathe inserted into databases), design and execute database applied sciences, and determine the efficiency of databases. to face out of the competition, breathe positive to too labor against earning industry certifications. some thing route you compass to a decision to take, breathe certain to possess a limpid theory of what you want to consequence and where you want your profession to move. figuring out this will assist you're making sane decisions.
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Apr 18, 2012
Oracle plans to hold a MySQL conference on September 29 and 30, just prior to Oracle OpenWorld 2012, which will breathe held in San Francisco from September 30 to October 4. The event called MySQL Connect is planned to provide an chance to learn about the latest MySQL features, discuss product roadmaps, and connect directly with the engineers behind the latest MySQL code.
MySQL Connect will embrace six tracks: Performance and Scalability, tall Availability, Cloud Computing, Architecture and Design, Database Administration, and Application Development, and feature technical sessions, hands-on labs and birds of a feather (BOF) sessions delivered by MySQL community members, users, customers and MySQL engineers from Oracle.
"The IOUG's MySQL Council has been collaborating with Oracle over the final year on ways to enrich the MySQL Community. To possess their own two-day, MySQL-focused event, in conjunction with this year's Oracle OpenWorld, is a testament to Oracle's commitment to listen to, uphold and foster the MySQL Community," says Sarah Novotny, chairperson, IOUG MySQL Council.
The call for papers is now open and MySQL users and community members are encouraged to submit session proposals.
In other MySQL news, Oracle has announced a unique evolution Milestone Release (DMR) for MySQL 5.6. Available for download in the MySQL Developer Zone, the MySQL 5.6 DMR provides unique replication features enhancing availability with self-healing recovery, increased performance, and improved manageability.
Oracle is too providing early access to features under evolution for community testing and feedback through http://labs.mysql.com. The features under evolution embrace online operations for ADD index and NoSQL access to InnoDB via the Memcached protocol.
Devart has released the latest version of dbForge Studio for MySQL and unique versions of three standalone tools for MySQL and MariaDB servers.
The unique release of dbForge Studio for MySQL, v. 6.1, the universal MySQL and MariaDB GUI appliance for database management, administration and development, contains improvements and unique features, such as uphold for the latest versions of MySQL and uphold for MariaDB.
New features include:• Database connectivity uphold expanded to MySQL 5.6, MySQL 5.7, MariaDB 5.5 and MariaDB 10.0• MariaDB Virtual Columns uphold in Data Export/Import wizards and Data/Schema Comparison tools• Microseconds uphold for TIME, DATETIME and TIMESTAMP data types: Data Editor, Data Export/Import wizards, Data Comparison tool• Extend uphold of pluggable authentication modules for MySQL servers
The plenary list of improvements and unique features can breathe create at the dbForge Studio for MySQL history page.
The unique releases of dbForge Schema Compare for MySQL, v3.1 and dbForge Data Compare for MySQL, v4.1 allows users to compare and synchronize database schemas and data.
New features include:• Database connectivity uphold expanded to MySQL 5.6, MySQL 5.7, MariaDB 5.5 and MariaDB 10.0• uphold for MariaDB Virtual Columns• Microseconds uphold for TIME, DATETIME and TIMESTAMP data types
The unique release of dbForge Query Builder for MySQL, v3.1 helps users build and execute complex queries easily.
New features include:• Database connectivity uphold expanded to MySQL 5.6, MySQL 5.7, MariaDB 5.5 and MariaDB 10.0• MariaDB Virtual Columns uphold in Data Export wizard• Microseconds uphold for TIME, DATETIME and TIMESTAMP data types: Data Editor, Data Export wizard• Extended uphold of pluggable authentication modules for MySQL servers
Original article available at https://habrahabr.ru/company/mailru/blog/323870/
I’d fondness to share with you an article based on my talk at Tarantool Meetup (the video is in Russian, though). It’s a short epic of why Mamba, one of the biggest dating websites in the world and the largest one in Russia, started using Tarantool. Why did they determine to busy ourselves with MySQL-to-Tarantool replication?
First, they had to migrate to MySQL 5.7 at some point, but this version didn’t possess HandlerSocket that was being actively used on their MySQL 5.6 servers. They even contacted the Percona team — and they confirmed MySQL 5.6 is the final version to possess HandlerSocket.
Second, they gave Tarantool a try and were pleased with its performance. They compared it against Memcached as a key-value store and saw the hasten double from 0.6 ms to 0.3 ms on the very hardware. In relative terms, Tarantool’s twice as hastily as Memcached. In absolute terms, it’s not that cool, but soundless impressive.
Third, they wanted to withhold the whole existing architecture. There’s a MySQL master server and its slaves — we didn’t want to change anything in this structure. Can MySQL 5.6 slaves with HandlerSocket breathe replaced with something else without having to win significant architectural changes?
We learned that the Mail.Ru Group team has a replicator they created for their own purposes. The view of replicating data from MySQL to Tarantool belongs to them. They asked the team to share the source code, which they did. They had to rewrite the code, though, since it worked with MySQL 5.1 and Tarantool 1.5, not 1.7. The replicator uses libslave, an open-source solution for reading events from a MySQL master server, and is built statically without any of MySQL’s system libraries. It’s been open-sourced under the BSD license, so anyone can expend it for free.Replication constraints
Firstly, binary logs residing on a master must breathe row-based (STATEMENT and MIXED options won’t do, only ROW). Secondly, this replicator is not a Tarantool module, but a stand-alone daemon that doesn’t possess anything to consequence with either Tarantool or MySQL. Thirdly, if you want a solitary master to have, say, ten slaves, you’ll possess to rush ten part daemons, because one replicator can replicate data to only one Tarantool instance at a time. Lastly, the replicator won’t labor with MariaDB. They tried it with versions 5.6 and 5.7, but they’re either an Oracle or a Percona build (which is what they use). MariaDB’s replication protocol has been changed.How does replication work?
MySQL and Tarantool know nothing about each other. The replicator reads every solitary the MySQL binary logs and writes the data to Tarantool.What can the replicator do?
When the replicator is run, it grabs every solitary the data from a master, based on the configuration file that specifies which databases/tables requisite to breathe replicated. That said, it takes just a Tarantool instance with barren spaces to launch the replicator — it’s very convenient.
As a system administrator, you requisite to understand if the replication process is working, which binary log and which position value are being read at the moment. Of course, the replicator provides such functionality: there’s a part Tarantool space that contains just three values, including the binary log name and the current position value — you may esteem it as an analog to suitable outmoded exhibit SLAVE STATUS.10.5.2.17:5000> box.space.ReplicationLog:select() [0, ‘db-bin.024218’, 916925355]
After adopting the replicator, they deployed seven Tarantool instances running on only two servers, as a solitary Tarantool instance can’t expend every solitary the CPU cores of a machine at once. As a quick refresher of the Tarantool architecture, one instance is capable of using three cores or more: one core or more for network, strictly one core for transactions and strictly one core for handling write-ahead log (WAL) files.Workload
After they ran the replicator, the workload on MySQL slaves with HandlerSocket dropped proximate to zero.
Then they tried to remove seven out of eight MySQL slave servers, and the remaining one was able to withstand every solitary the workload. They didn’t fully give up MySQL slave servers — we kept them for handling those requests that labor without HandlerSocket, which means they can complete the migration to MySQL 5.7. In the end, they saved at least seven servers, a number of enterprise SSDs that power them, and some rack space, electricity and money.
What about response time? They at Mamba possess their own open-source product called BTP. Below are a pair of charts it generated.
HandlerSocket has a very peculiar API. You requisite to first call connect, then open_index and, finally, execute. The chart above shows cumulative time for the three methods, which sometimes could breathe as tall as one second.
Compare it to what they got on Tarantool servers running the very database replicated from a MySQL master:
The intuition is quite simple: MySQL was running on SSDs, and the buffer pool size was less than that of the database. Tarantool, on the other hand, is an in-memory database, so every solitary the data is RAM-resident. They even disabled WAL files on almost every solitary the instances, so no disk operations are involved. However, there are several non-production instances used for snapshotting, where they kept WAL files enabled.Isn’t it reinventing the wheel?
If someone else told me about every solitary this, I’d say, “Aren’t you reinventing the wheel? You’re replicating something from MySQL to Tarantool. Sure, you’re thinking of dropping HandlerSocket in order to migrate to MySQL 5.7. But why would you consequence that in the first place? If your servers without HandlerSocket can’t maneuver the workload, just add some more servers. If you consequence requisite an in-memory database, you can create mound tables or lunge database files to tmpfs, create symlinks — and every solitary the tables will breathe in RAM again. Bingo!”
However, that’s not how it is.
Here’s what so special about the replicator. Suppose the database that resides on a master and that they want to replicate contains about a hundred tables, but a slave doesn’t requisite every solitary these tables — it needs only seven of them. We’d detest to spend extra resources on replicating surplus data. Luckily, MySQL allows specifying the number of tables to replicate. But what if these seven tables possess 120 fields in total, whereas only 21 of them are actually used in queries handled by the slave servers? MySQL forces us to entirely replicate every solitary the seven tables, which recall up about 80 GB of RAM in their case. The replicator, on the other hand, allows specifying a subset of table fields for replication, bringing the volume down to 20 GB.
What’s too considerable about the replicator is that every solitary these table fields are achieve into one space, so you can select them with a solitary query, without using any joins.Results
Tarantool is really fast, up to three times faster than MySQL, as attested by the charts above.
The resulting implementation of Tarantool replication works faster than that in MySQL, and here’s why. When they first ran it, they couldn’t succor asking ourselves if their replication is consistent. They created a simple PHP script that compares the number of monthly dynamic users as reported by a MySQL master and a Tarantool slave. Sometimes the script grabbed even the users who registered less than a second ago. A MySQL slave didn’t possess those users yet, whereas the Tarantool slave did, even though executing exhibit SLAVE STATUS on the MySQL slave always showed a zero delay. That said, the information reaches Tarantool faster, since it’s an in-memory database.Tarantool’s advantages
What happens if you unplug a MySQL server power cable, then plug it back in and restart the server? At startup, the process of InnoDB recovery is launched, which consequently restores the database. But a pair of times we’ve seen the following situation: the controller starts writing some inadequate information to disk, the server throws a kernel panic due to the controller malfunction and InnoDB recovery following the restart ends with a core dump.
Tarantool boasts a well-thought-out WAL mechanism: even if the controller does write some rubbish to a WAL file, which prevents you from relaunching Tarantool, you can simply delete this file. Or you could open it and delete records one by one until Tarantool is up and running again. As a side note, it’s feasible to specify the number of transactions written to a WAL file at a time — it can even breathe a solitary transaction. I’d fondness to stress here that the MySQL instance I used above involves a hardware (server) failure; normally, InnoDB recovery works fondness a charm.
What I too fondness about Tarantool is that it’s very user-friendly. It’s always limpid what to consequence and how to consequence it. Suppose a unique MySQL version is out. You install it, but it won’t launch. After checking the error log, you determine some parameters in my.cnf are deprecated. Then you open the official documentation and discern a bunch of unique parameters, so you possess to pattern out how to create a unique my.cnf file to boost the performance. Tarantool doesn’t possess any of this. It’s easy to use, with an absolutely necessary minimum of parameters.
Another thing they every solitary enjoyed is the Tarantool community. There’s a Telegram chat (ping Denis Anikin for an invite), where you can examine the developers a question about Tarantool or win a quick bug fix.
Tarantool’s snapshotting implementation is excellent. This mechanism works incredibly fast — 800 MB or, probably, even 1 GB per second. Everything is written consecutively to a solitary file. You don’t requisite high-end disks for that, the cheapest SATA drives are more than enough. Starting a snapshot of a 20 GB database takes under five minutes. According to my measurements, MySQL requires much more time for that.Tarantool’s disadvantages
First and foremost, Tarantool indexes are case-sensitive, which is really inconvenient, especially if you compass from the MySQL background.
Second, working in the console isn’t that comfortable. Say, how consequence you know that MySQL replication is running? You execute exhibit SLAVE STATUS twice and discern the numbers change. Moreover, the MySQL console will exhibit you the output of exhibit SLAVE STATUS only once, even if you execute the command a hundred times.
The Tarantool console, on the other hand, displays a part output each time you hit Enter. As a result, it takes a lot of time to scroll back up to a position you need.Takeaway
Tarantool is a really suitable product that you can expend in your projects. It does possess its drawbacks, but it’s constantly evolving. Now that it has data replication from MySQL, I hope it will grow even faster. Tarantool’s killer feature is, of course, its speed.
Thank you and remain tuned!
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