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What is Hadoop?

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I’m sure you’ve heard about Big Data. If not, I recommend you my blog post “ What is Big Data  ?” The most well known technology used for Big Data is Hadoop. It is used by Yahoo, eBay, LinkedIn and Facebook. It has been inspired from Google publications on MapReduce, GoogleFS and BigTable. As Hadoop can be hosted on commodity hardware (usually Intel PC on Linux with one or 2 CPU and a few TB on HDD, without any RAID replication technology), it allows them to store huge quantity of data (petabytes or even more) at very low cost (compared to SAN bay systems). Hadoop is an open source suite, under an apache foundation: http://hadoop.apache.org/ . The Hadoop “brand” contains many different tools. Two of them are core parts of Hadoop: Hadoop Distributed File System (HDFS)  is a virtual file system that looks like any other file system except than when you move a file on HDFS, this file is split into many small files, each of those files is replicated and stored on (usua...
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Top 10 Money Tips For Almost Everyone 1. Invest early Time is the greatest money earner. If you start by saving $200 per month for the next 50 years, you will have a much more considerable sum than saving $1000 per month for the last 10 years. This is due to the help you are getting from compounding the interest that you will get from consistently having your money work for you for a long time. The Golden Rule is to start saving and investing yesterday! 2. Pay yourself first Always put investing and saving ahead of purchases. We live in a consumerist world. Spending and enjoying our purchases is our lifestyle. What better way to skip out of the loop than hiding a portion of your paycheck away when you get you monthly paycheck. Setup an automatic separate account(Time Deposit or Money Market) to hide your money away on the day you get your paycheck. What you do not see, you do not want to use. 3. Do not take on high interest debt Debt can kill you. Once you take on high interest de...
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Common Symptom of Depression: Low Energy

Common Symptom of Depression: Low Energy People who are depressed tend to have low energy, though some are agitated. But in almost all cases there's a loss of interest in doing things, including things that they might have loved doing in the past. They might eat less, or they might overeat. They might have difficulty sleeping, or they might oversleep. Because people feel so much shame about their depression, they tend to isolate. They feel that no one would want to be around them, and they don't want their symptoms to be seen.  Depression can be a very painful and overwhelming experience that people blame themselves for, and they often feel that help isn't possible. Perhaps the most important thing that I can say about depression is that while it might feel hopeless, we are able to treat depression with psychotherapy and counseling.