Yahoo! Answers - Wikipedia
to. Commission File Number Yahoo! Inc. (Exact name of Registrant as . statements after the date of this Annual Report on Form K to reflect new results (affecting our company as a whole or affecting any particular negative impact of $24 million on net income attributable to Yahoo!. And our favorite free historical price data provider, Yahoo, now Before running the Yahoo based script, run this one: .. Please note that the whole Alpha Vantage api that is consisted of 50+ . I'm looking at the “forex” numbers and doing some variance testing before I Big Negative is very slow access. Yahoo! Answers is a community-driven question-and-answer (Q&A) website or a knowledge The number of poorly formed questions and inaccurate answers has made the site a target of ridicule. In extreme, but rare cases (for a Terms of Service violation), the abuser's entire Yahoo! ID will be .. (Yes, that's a minus.).
Once a MemStore overflows, it is flushed to disk, creating a new HFile. HBase adopts multi-versioned concurrency control — that is, MemStore stores all data modifications as separate versions.
Multiple versions of one key may therefore reside in MemStore and the HFile tier.
Yahoo! data breaches
A read get operation, which retrieves the value by key, scans the HFile data in BlockCache, seeking the latest version. To reduce the number of disk accesses, HFiles are merged in the background.
This process, called compaction, removes the redundant cells and creates larger files. However, their traditional design makes no attempt to compact the in-memory data.How to classify numbers - Numbers and operations - 8th grade - Khan Academy
This stems from historical reasons: With recent changes in the hardware landscape, the overall MemStore size managed by RegionServer can be multiple gigabytes, leaving a lot of headroom for optimization. This work pattern decreases the frequency of flushes to HDFS, thereby reducing the write amplification and the overall disk footprint. With fewer flushes, the write operations are stalled less frequently as the MemStore overflows, and as a result, the write performance is improved.
Less data on disk also implies less pressure on the block cache, higher hit rates, and eventually better read response times.
Finally, having fewer disk writes also means having less compaction happening in the background, i. All in all, the effect of in-memory compaction can be thought of as a catalyst that enables the system to move faster as a whole.
Yahoo! data breaches - Wikipedia
Accordion currently provides two levels of in-memory compaction: The former applies generic optimizations that are good for all data update patterns. The latter is most useful for applications with high data churn, like producer-consumer queues, shopping carts, shared counters, etc.
All these use cases feature frequent updates of the same keys, which generate multiple redundant versions that the algorithm takes advantage of to provide more value. Answers' reputation of being a source of entertainment rather than a fact based question and answer platform,   and for the reliability, validity, and relevance of its answers.
A study found that Yahoo!
Answers is suboptimal for questions requiring factual answers and that the quality decreases as the number of users increases. Answers provides, particularly the persistence of inaccuracies, the inability to correct them, and a point structure that rewards participation more readily than accuracy, all indicate that the site is oriented towards encouraging use of the site, not offering accurate answers to questions.
Answers itself indicate that Yahoo! Answers attracts a large number of trolls. The site does not have a system that filters the correct answers from the incorrect answers.
Are negative numbers whole numbers?
Answers, once the "best answer" was chosen, there was no way to add more answers nor to improve or challenge the best answer chosen by the question asker; there is a display of thumbs down or thumbs up for each answer, but viewers cannot vote.
In Aprilthis was changed to allow for additional answers after a best answer is chosen, but the best answer can never be changed. Also, while "best answers" can be briefly commented upon, the comment is not visible by default and is hence hardly read. If the best answer chosen is wrong or contains problematic information, the only chance to give a better or correct answer will be the next time the same question is asked.
The older answer will likely get higher priority in search engines. Any new answer will most probably not be seen by any original questioner.