Mysterious power failure takes down Wikipedia, Wikinews

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Mysterious power failure takes down Wikipedia, Wikinews
This article mentions the Wikimedia Foundation, one of its projects, or people related to it. Wikinews is a project of the Wikimedia Foundation.

Wednesday, February 23, 2005

On Monday, at 10.14 pm UTC, the Wikimedia server cluster experienced a total power failure, taking down Wikipedia, Wikinews, and all other Wikimedia websites.

The servers are housed in a colocation facility (colo) in Tampa, Florida, USA. They occupy two racks, with each rack receiving electricity from two independent supplies. However, both supplies have circuit-breakers in them, and both opened at the same time, leading to a total power failure. All computers immediately went down. It’s normal for fire safety regulations to prohibit uninterruptible power supplies in colos, with the colo providing its own UPS and generator instead. The circuit breakers were on the computer side of this emergency power system, so none of the computers continued to receive power to survive the breaker trip or shut down safely.

The actual reason why the circuit breakers tripped is currently unknown.

When power was restored, it was discovered that most of the MySQL databases that store the data which makes up Wikipedia et al had been corrupted. The main database and the four slaves had all damaged the data on their hard disk drives beyond the ability of the auto-correction to repair. Only one copy survived safely, on a machine that is used for report generation and maintenance tasks, which remained 31 hours backlogged while catching up after an unusually heavy update load during the previous week.

Volunteer Wikimedia engineers worked through the night rebuilding the databases from the sole good copy onto the other servers. The Wikipedia database is over 180Gb in size, making the copying process last 1.5 – 2 hours for every server it was performed upon.

Regular back-ups of the database of Wikipedia projects are maintained – the encyclopedia in its entirety was not at risk. The last database download was made on February 9; all edits since then could only have been laboriously rebuilt from logs and recovered from the damaged database requiring much more time and effort.

Limited read-only service was established late Tuesday afternoon, with editing becoming possible 24 hours after the power failure. Final repairs continue now, as well as upgrades to prevent similar issues in the future. Server-intensive features, such as categories and ‘watchlists’ that display recent changes to selected articles to registered users, remain disabled to ease the load on the recovering systems.

The process which led to the damage originated with the operating system, disk controllers, or hard drives failing to flush the data correctly.

If the power to a database server is cut mid-write, the database may be corrupted and unreadable, however the operating system, hardware, and software are designed to make this very unlikely. In a previous incident in 2004 power was also lost to a server but the database was undamaged.

To avoid such damage, each database server saves a copy of an edit to be applied to the database on a separate storage system before making the actual update to the database itself. This so-called ‘write-ahead logging’ should ensure that in the event of a system crash, the database can be rebuilt from a ‘last-good’ state by replaying the edits saved in the log.

Earlier this year popular blogging site LiveJournal suffered a similar power failure when another customer at their colocation facility pressed an Emergency Power Off button, intended for use only by firefighters. The company suffered database corruption similar to that seen at Wikimedia.

LiveJournal are now fitting UPS to their servers to ensure that they have time to shut down safely in the event of a power failure. Wikimedia was said to be investigating the possibility of fitting similar equipment at the time of this failure.

Several pundits have suggested that the use of another database, such as the proprietary database Oracle or the free PostgreSQL, would have avoided the database corruption seen at the server cluster. A post-mortem of the incident show the failure was in the operating system, or the hardware, or some combination of the two. LiveJournal, which also uses MySQL, reported similar database corruption after their power cut.

The Wikimedia foundation only allows the use of free software on its systems, and future versions of the Mediawiki software will support the PostgreSQL database.

Users are reminded that during times of system failure or excessive demand, they can still search Wikipedia using Google. The articles may be viewed using Google’s cache.

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  • 5 Unique Proposal Ideas With Diamonds}

    Click Here For More Specific Information On:

    Submitted by: Narin Sin

    Congratulations, you are ready to take the next step in your relationship and pop the question! To make that moment special, use these 5 unique proposal ideas to present that beautiful engagement ring. DG & Co company can help match your wedding rings in Melbourne to the perfect proposal event.

    For the social butterfly

    If your special someone loves to chat and has a social calendar that is filled for months at a time, consider popping the question at a special event. Whether you make your special move at a concert during an intermission, announce your feelings on a jumbo-tron during a sporting event or get fifty of your closest friends to choreograph a flash mob with you, she will be sure to love all the attention! Consider halo diamond rings with lots of dramatic details. You could also consider custom engagement rings for that extra special flair.

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    For the travel enthusiast

    If your special someone is always dreaming of the next dream destination they want to travel to and has more passport stamps than anyone you know, then a proposal on a vacation is a must. Choose to pop the question at the top of their favorite landmark, whether it is on a local road trip or in a romantic European destination. They will be so pleased with the surprise, while you enjoy the surrounding sights. Pair your proposal with engagement rings that have interesting lines or curves to them, much like the architecture of a landmark.

    For the nature enthusiast

    If your special someone’s ideal day is one spent outside enjoying the views of a garden or hiking, then considering taking them on a romantic picnic. Champagne, delicious food and a proposal pair well. Think of a location that has beautiful scenery for pictures. Family and friends could be waiting close-by, ready to take pictures of the special moment. You could also take a walk along a garden, spelling out the question in flower petals or revisit a hiking trail that you visited together already and get down on one knee at the top. Select diamond rings that have features that intertwine like branches or have a floral detail.

    For the classic traditionalist

    If your special someone values tradition and appreciates a simple, minimalist design, then revisiting your first date or proposing at a location that holds a special meaning to you is sure to have her shouting yes! In fact, you could even prepare a scavenger hunt outlining special moments in your relationship leading up to the proposal for a truly romantic adventure. Please them with classic wedding rings, such as a six-prong solitaire.

    For the beach enthusiast

    If your special someone spends more time in a bikini with the sand between her toes than anything else, a beautiful beach location is a must. Write a love note in the sand or create a message in a bottle for a truly memorable keepsake. If you are feeling adventurous, pop the question while you are scuba diving or snorkeling underwater! For a more relaxing feel, take her out on a boat, where you can watch for dolphins or whales, then pop the question. Search for engagement rings that have delicate curves, inspired by the waves of the ocean.

    About the Author: DG & Co. Jewellery is an online boutique based in Melbourne’s bustling CBD. We offer a range of exquisite engagement rings, loose diamonds and stunning collection of gemstone jewellery. For more info please visit:

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    Source:

    isnare.com

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    isnare.com/?aid=1950399&ca=Business}

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    Motorola to launch iTunes mobile phone

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    Motorola to launch iTunes mobile phone

    Friday, April 22, 2005

    Motorola has recently confirmed plans that it will launch an iTunes compatible mobile phone. The firm, which released quarterly results on Friday, revealed that the phone would be available in a few months time.

    There had been speculation that the wireless communications giant would scrap the phone after an underwhelming response from US operators, however CEO Ed Zander confirmed the company’s intentions at the results presentation.

    The phone, when launched, will allow users to easily download digital music from Apple’s popular iTunes music store onto their handset. The combination of mobile phone and MP3 player is a long awaited example of the much touted “technological convergence” often mentioned by the industry’s CEO’s.

    Wikinews will have a reporter live at Apple’s WWDC keynote (when the software is likely to be released) on June 6 to cover the event.

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    MG Rover sold to Nanjing Auto

    ">
    MG Rover sold to Nanjing Auto
    Posted in Uncategorized | April 10th, 2018

    Friday, July 22, 2005

    Administrators PriceWaterHouseCoopers (PWC) have announced that the British car company MG Rover and its engine manufacturer Powertrain Ltd has been sold to Chinese company Nanjing Automobile for an unknown sum of money. The company beat bids from Shanghai Automotive (SAIC), despite being the smaller of the two.

    MG Rover collapsed this Spring, after struggling to make a profit for several years.

    SAIC had tried to buy only the engine plant and then transfer it to China, but in June Nanjing Automobile approached PWC with a combined bid for both the car manufacturing company and Powertrain. This Monday SAIC bid for both but the offer was inferior to Nanjing’s.

    Nanjing has indicated that it too will move the engine production plant to China, along with some car manufacturing. However it also intends to continue building cars in Britain, and establish an engineering research and design centre there in an effort to expand its sales globally. Nanjing intends to start hiring at once.

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    Apple collecting location data from iPhone, iPad

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    Apple collecting location data from iPhone, iPad
    Posted in Uncategorized | April 9th, 2018

    Saturday, April 23, 2011

    Apple Inc.’s iPhone and iPad periodically send location information back to the company, according to new reports. The data is transmitted to a secure database that only it can access, Apple claims.

    Bruce Sewell, an attorney for Apple, sent a letter to two US Representatives last year, discussing the company’s data collection techniques and policies. The thirteen-page letter states that location information is recorded and sent to Apple every twelve hours, but only if the user enables the device’s location settings.

    Apple began building a location database of its own when it decided to stop using similar services offered by Google & SkyHook Wireless. Location data is used in social networking applications and call routing.

    In a statement to the Associated Press, Democratic Massachusetts Representative Edward Markey said, “Apple needs to safeguard the personal location information of its users to ensure that an iPhone doesn’t become an iTrack.”

    Such data collection is not unique to Apple. Google’s Android operating system uses similar technology to provide location-based services to its users. Google has said that it also uses the data collected to provide accurate traffic data through its “Maps” applications on both Apple and Android devices. However, the company declined to comment on the latest findings regarding its data collection.

    Apple was also recently in the spotlight after it was discovered that the iPhone and iPad were retaining location data on the device itself. This information is collected in an unencrypted file and is not transmitted elsewhere. The data file reportedly contains a variety of information, including longitude and latitude, cell phone tower identification data, wireless hotspot identification, and timestamps.

     This story has updates See Steve Jobs denies ‘location-gate’ 
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    Twelve injured in Washington after ride at fair topples over

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    Twelve injured in Washington after ride at fair topples over
    Posted in Uncategorized | April 8th, 2018

    Sunday, April 19, 2009

    At least twelve children have been injured after a swing ride at the Puyallup, Washington Spring Fair toppled over.

    The ride is called a ‘LollySwing’, which is located in Kiddyland, where the riders sit in swings while the machine spins them around. It is owned by Funtastic Traveling Shows which has been a ride provider for the fair for over 50 years. The accident happened at around 6:30 p.m. (PDT).

    Injuries are being described as mostly cuts and bruises, but one child was reported to have been in a neck brace and was taken to a local hospital. Five other children were also hospitalized.

    According to one witness, “it just all of a sudden topped over.” The cause is under investigation. The ride has been at the fair for the past five years. Among the seven largest operators of fair rides in Washington, from 2001 to 2007 there were only seven reports of injuries related to mechanical failures.

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    Tornado hits downtown Atlanta

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    Tornado hits downtown Atlanta
    Posted in Uncategorized | April 7th, 2018

    Saturday, March 15, 2008

    A tornado, spawned from a large storm, has hit the United States city of Atlanta, Georgia, causing extensive damage throughout the city.

    The National Weather Service confirmed Saturday morning that it was a tornado that struck the city. After reviewing the aftermath of the storm, they classified it as an EF2 tornado on the Enhanced Fujita scale. Atlanta mayor Shirley Franklin says she is beginning to apply for federal disaster aid.

    There have been no confirmed deaths, but the mayor’s spokeswoman says there may be dead victims trapped within the ruins of a collapsed loft complex. The Fulton Cotton Mill Lofts are located in the historic Cabbagetown neighborhood, where at least 20 homes were destroyed. “It looks like a bomb went off, it looks like World War III,” said Mahsud Olufani, who has an art studio in the neighbourhood. “It’s a disaster area.”

    At least 27 people suffered injuries, mostly cuts and bruises. One person is reported to be in critical condition. Grady Memorial Hospital, where many of the injured were taken, had suffered some window damage but was still operating. Around 50 people have been taken to a local Red Cross shelter for displaced residents.

    The tornado struck during the semifinal game of the SEC Basktetball Tournament between Mississippi State and Alabama. Play was stopped with around 2 minutes to go in overtime when heavy wind could be heard outside with rippling of the roof. Damage was done to the roof as debris fell to the floor. No injuries were reported in the Dome. “I thought it was a tornado or a terrorist attack,” said Mississippi State guard Ben Hansbrough.

    The storm arrived with little forewarning. A tornado warning was issued for the downtown area a few minutes before the storm hit. “Ironically, the guy behind me got a phone call saying there was a tornado warning,” said Lisa Lynn, who was attending the game at the Georgia Dome. “And in two seconds, we heard the noise and things started to shake. It was creepy.”

    The CNN Center in downtown Atlanta was severely damaged, especially in the atrium, where the ravaged ceiling allowed water to pour in. Police closed several streets near the CNN Center because of the debris, which included power lines, billboards, and even office chairs.

    The Omni Hotel, which is attached to the CNN Center, also sustained damage, with many of its windows shattered. Visitors at the hotel were evacuated to the exhibition hall at street level. “It was crazy. There was a lot of windows breaking and stuff falling,” said Terrence Evans, a valet at the hotel.

    At Centennial Olympic Park, located near CNN and the Omni Hotel, two Olympic torch sculptures had fallen over, and a performance pavilion was destroyed. A high-rise dorm at Georgia State University was damaged by the tornado, as evidenced by a large hole in the building’s 14th floor. University students were evacuated on buses.

    According to Georgia Power, more than 13,000 of their customers are currently without electricity. Crews are working to fix downed power lines, but they said it would be difficult with all the debris.

    Another large storm, currently in Mississippi, is heading towards Atlanta, and is forecast to arrive around 3 p.m. National Weather Service meteorologist Mike Leary said Friday’s storm could be “nothing to compare with what’s coming in tomorrow”.

    All downtown events scheduled to occur Saturday have been cancelled. This includes the city’s Saint Patrick’s Day parade. The remaining SEC tournament games are to be played at Georgia Tech‘s Alexander Memorial Coliseum, located in the undamaged midtown.

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    Malaysian culture minister pans documentary

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    Malaysian culture minister pans documentary
    Posted in Uncategorized | April 7th, 2018

    Thursday, May 25, 2006

    “About 20 [Ministers of Parliament] but 40 journalists including photographers,” said filmmaker Amir Muhammed about a screening of his controversial documentary at the National Film Institute on Sunday, May 21.

    Among the ministers to comment on the film, Culture, Arts and Heritage Minister Datuk Seri Dr Rais Yatim has been widely quoted in the press.

    On May 21, Malaysia’s national news agency, Bernama, filed a story entitled, “Rais finds the ‘Last Communist’ not offensive.” With reference to the May 18th screening, Bernama reports Rais said, “The plot isn’t controversial and there’s nothing that could be deemed as offensive from the cultural viewpoint.”

    Commenting on interviews with former members of the Malayan Communist Party, “they were vague, not conclusive for any quarters,” he said.

    The national daily New Straits Times also reported on the screening. It reports Rais said the film is “not important enough to be controversial”.

    The daily followed up with an article where Rais is reported as saying the film “indeed ‘glorifies’ former communist leader Chin Peng”, filed May 24. “Amir should have interviewed the security forces, the Home Guard, the families of the home guard who were killed by the communists, and government officials of the time,” said Rais.

    The Bernama article incorrectly attributes the source of the ban to the Internal Security Ministry, it was widely reported that the Home Ministry was responsible.

    The film has picked up controversy because it is inspired by the Malayan Emergency.

    Chin Peng himself is living in exile in North Thailand. He released an autobiography last year entitled, “Chin Peng: My side of history.”

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    Gardening Mushrooms Indoor With Shroom Kit

    Posted in Permaculture Magazine | April 6th, 2018

    Gardening mushrooms indoor with Shroom kit

    by

    Goggard

    Mushrooms growing at home are widely practiced all over the world. There are thousands of mushrooms verities which includes both edible and poisonous onces. Planting mushrooms at home is very easy process through which person is well familiar with all methods and process of growing mushrooms. It requires hygienic environment and proper level of care with the usage of kits and equipment that will simplify whole process and increase the quality of mushrooms. The process of growing Shrooms is completely different from others because they don’t contain chlorophyll and they depend on other plant material for their food. There are many verities of Shroom Kit that are available and each of these can be well used to produce excellent value of mushrooms. After buying these kits you need not to purchase spores from the market, it comes inside the kit. The major necessity for growing mushrooms includes spores, pot soil and syringe, that all comes in kit. Some of the popular mushroom kits include the casing, macrodome and automated mushroom kit. All these kits, equipments are shorten and simplify the process of growing mushrooms at home such that one should never have to depend on outdoor stores for buying mushroom fruit. It is essential to choose the best kit and equipment to obtain the highest quality mushroom fruit. Mushrooms kits are growing more and more popular and can be obtained through various online stores that you can enjoy at any time of the year. This kit is basically made up of mushroom mycelium that grows on a base called a substrate that mean less time is needed to cultivate the Shrooms.

    [youtube]http://www.youtube.com/watch?v=Ix6v7F1YUMg[/youtube]

    For the home gardeners, the mushrooms kit is for best way to grow mushrooms at house because the kits come with the instructions to get the gardeners started. The mushrooms start emerging within a few days and are then ready for harvesting and cooking. Shroom Kits are the best way to get the family involved in a project and to teach the children about the fungi life cycle. Mushrooms will always take 6 to 12 weeks to grow and harvest properly. The Mushroom kit meets an individual’s natural desire to grow fresh mushrooms indoors with family members. It is best to research the various suppliers before actually buying to ensure its quality and reliability. Again, it is the best for any first time grower and experts who like to do gardening and this kit are the stepping stone for growing mushrooms. The actual Mushroom Growing Kit

    take precautions connected with the natural doubts of homemakers as one with their own natural method of growth. One of the great advantages of using the kits is cost effective; you don’t have spent extra money. So, select to buy mushrooms grow kits and begin to grow your own mushrooms at home with ease manner.

    For more information on

    Hydroponic Kit

    , Mushroom Growing Kit, Cheap Hydroponics, Mushroom Grow Jars. Please visit our site:- www.caligrowkits.com

    Article Source:

    ArticleRich.com

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    Roth Ira Conversions Information For A Retirement Income Specialist

    Posted in Financial Services | April 6th, 2018

    Click Here For More Specific Information On:

    By Cory Bowman

    The profession of being a retirement income specialist is a rewarding and steady job. There are many advantages to becoming a retirement income specialist; helping others and finding challenges and enjoyment in your work are some of the main positives. To become a retirement income specialist, one must usually enroll in a courses or programs to meet certain requirements and to learn the ins and outs of the field. One specific topic that a course might cover is Roth IRAs, and in particular: Conversions.

    Roth IRAs are flexible investments (usually with more options than other traditional IRAs). There are many laws governing the implementation of these Roth IRAs, so a retirement income specialist must always stay up to date with the current laws. Starting January 1st, 2010, an income limit that previously prevented many Americans from converting their traditional IRAs into Roth IRAs disappeared. If your clients household income is more than $100,000 (the previous limit), converting to a Roth will be an option for the first time. Married couples filing separate tax returns also will now be able to convert. Listed below are strategies for the advisors consideration.

    Pay taxes on converted amount

    You have to pay income taxes when you convert. For example, a client in the 28% tax bracket will owe $28,000 (plus state income taxes) on a $100,000 conversion.

    [youtube]http://www.youtube.com/watch?v=ck0Xxkmt12Q[/youtube]

    Converting may benefit the client in the long runif a higher tax rate is expected during retirement. If, like most people, the client is not sure about his future tax rate, consider converting just part of his traditional IRA to a Roth. Doing so gives “tax diversification” because some money would be in a Roth and some still in a traditional IRA.

    Consider source used for taxes

    Stick with the traditional IRA if the client does not have money available outside of the IRA to pay conversion taxes. Pulling money out of an IRA to cover taxes can defeat the purpose of making the switch in the first place. By reducing retirement savings, clients reduce the ability to generate future tax-free earnings on money invested in the Roth. If under age 59, amounts pulled out of a traditional IRA to cover taxes may be subject to a 10% IRS penalty.

    Two conversion strategies

    If the client does not have enough money to pay taxes on all converted assets, or if doing so would push her into a higher tax bracket, consider converting just part of the traditional IRA assets. A special option applies only to 2010 conversions; the taxpayer can elect to evenly divide the tax liability over 2011 and 2012. If tax rates go up in 2011, this split-year strategy may not be a good idea.

    Longer time horizons are better

    A conversion may not be wise for clients who expect to withdraw money within five years. Generally speaking, the client will only be able to withdraw earnings from the account without taxes and penalties if age 59 or older and a Roth IRA has been held for at least five years. Withdrawals of the original conversion amount are always tax-free; however a 10% early penalty may still apply. The client must be either at least age 59 or wait at five years after the conversion to make the withdrawal in order to avoid the 10% penalty.

    Heirs can benefit

    During lifetime, the Roth IRA client is not subject to RMDs, meaning the entire amount can be left to someone else. A beneficiary who inherits a Roth IRA may be subject to RMDs, but withdraw the original conversion tax-free. Earnings are also tax-free, provided the Roth IRA meets the five-year holding requirement.

    About the Author: Cory Bowman is Director of Ops at the Institute of Business Finance. IBF has helped thousands of members of the financial services industry attain designations. For more information about becoming a

    retirement income specialist

    , visit http://www.icfs.com

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    isnare.com

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    isnare.com/?aid=499043&ca=Career

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