Author: Admin

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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Monday, July 6, 2020

A number of Muslim-majority countries around the world implement Shari’a — commonly known as Islamic law — and have laws against apostasy and blasphemy. Numerous times, over the years, people have been sentenced to death penalty for renouncing Islam. In 2018, a Pakistani journalism student Mashal Khan was killed by a mob lynch after he was accused of blasphemy. At times there have been protests against the restrictions on free speech in Islam.

Other than the restriction of free speech, many Muslim majority countries have declared homosexuality as a capital crime, and observe a strict dress code for women. Iran has banned a number of female chess players for not wearing a hij?b. An Iranian woman was sentenced 20 years for removing hij?b while protesting the strict dress code.

Wikinews had gotten in touch with Tanzanian-born ex-Muslim Zara Kay to discuss the struggles an ex-Muslim woman faces, as well as her organisation: Faithless Hijabi.  Faithess Hijabi is an organisation which helps other ex-Muslim women by sharing their stories and experiences.  Its Facebook page has over 7000 likes, and Zara Kay, who identifies herself as an antithiest, had previously helped a Saudi teenager Rahaf Mohammed escape to Canada.

The following is the interview with Zara Kay that took place in 2019.

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Friday, March 18, 2011

A week ago today, at 2:46 pm JST, a magnitude 9.0 earthquake struck off the coast of the T?hoku region in Japan. The earthquake created an extremely destructive tsunami that spawned 10 metre (33 ft) high waves just moments later. The tsunami travelled 10 km (6 mi) inland causing massive destruction in the country’s northeast, including crippling a nuclear plant.

The earthquake and resulting tsunami have left 5,692 dead and over 9,506 missing, with nearly 450,000 homeless. The death toll is expected to rise.

In this special photoessay, Wikinews looks at the earthquake and tsunami, the destruction that resulted and efforts to bring aid to the Japanese people.

Saturday, March 21, 2009

New Jersey has reversed its plans for a state-wide ban on bikini waxing after salon owners from across the state spoke out against the proposal.

The New Jersey Board of Cosmetology and Hairstyling planned to consider a ban on so-called “Brazilian waxes” in response to two women who reported being injured during a wax.

But state Consumer Affairs Director David Szuchman, who oversees the board, asked them to abandon the ban in favor of reviewing and establishing safeguards for those who provide the service.

“Many commentators have noted that the procedure could be safely performed,” Szuchman wrote in a letter to state board President Ronald Jerome Brown, according to the Asbury Park Press. “I, therefore, believe that there are alternative means to address any public health issues identified by the board.

Salon owners from across the state expressed relief with Szuchman’s decision.

“It was an unnecessary issue,” spa owner Linda Orsuto told the Associated Press. “In New Jersey especially, where the government has been picking our pockets for so long, it was like, ‘Just stay out of our pants, will you?'”

Although millions of Americans get bikini waxes, which generally cost between $50 and $60 per session, the practice comes with risks. Skin care experts say the hot wax can irritate delicate skin in the bikini area, and result in infections, ingrown hairs and rashes.

Waxing on the face, neck, abdomen, legs and arms are permitted in New Jersey. Although state statutes have always banned bikini waxing, the laws are seldom enforced because the wording is unclear.

If the measure had passed, New Jersey might have become the only US state to ban the practice outright.

Although Szuchman’s letter was crafted more as a recommendation than an order, media reports said the ban would likely never be approved without his support because his office oversees the board.

Monday, July 18, 2005

An 11-year-old girl faces serious assault charges in California after casting a stone at a group of boys who were throwing water balloons at her. In April, Maribel Cuevas was apprehended by Fresno, California police and spent five days in a detention center after throwing the object at the group of boys who bombarded her with water balloons as she walked down the sidewalk. A 9-year-old boy was hit with the stone, and suffered a wound to his head requiring medical assistance.

Since then, Cuevas has spent one month under house arrest pending court. Cuevas’ lawyer, Richard Beshwate, told the BBC that “They [Fresno police] are treating her like a violent parole offender. It’s not a felony, it’s an 11-year-old acting like an 11-year-old.”

Fresno Police Sergeant Anthony Martinez told reporters: “We responded. We determined a felony assault had taken place and the officers took the actions that were necessary.” Cuevas is due back in court next month on felony assault charges.

The girl was placed in juvenile hall during her five-day detention, with only one 30-minute visit from her parents. She was then placed under a 30 day house arrest and required to wear an electronic monitoring bracelet. The house arrest allowed the girl to attend school.

Maribel, who knows very little English, said that the boy initiated the conflict — the boy also admitted as much.