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USMark Grover
 

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    <p>Mark is a motivated software developer and a published author, always looking to solve interesting and challenging problems that redefine our world, one small step at a time.</p> <p>He's the co-author of O'Reilly's Hadoop Application Architectures book. You can read more about the book at hadooparchitecturebook.com He is also a regular speaker on topics related big data, design and architectures at conferences around the world.</p> <p>Previously, Mark also contributed a section in O'Reilly's 'Programming Hive'​ book. He has a passion for developing, contributing and using open source technologies and making their deployment easily accessible to others.</p> <p>You can see some of Mark's interviews here:</p> <p>O'Reilly video interview with Mark Grover on architecting big data applications: <a href="https://www.youtube.com/watch?v=fvD3-HpXGkQ" rel="nofollow">https://www.youtube.com/watch?v=fvD3-HpXGkQ</a></p> <p>O'Reilly video Interview with Mark Grover on Working in the Hadoop Ecosystem: <a href="http://programming.oreilly.com/2013/09/working-in-the-hadoop-ecosystem.html" rel="nofollow">http://programming.oreilly.com/2013/09/working-in-the-hadoop-ecosystem.html</a></p> <p>ZDNet Interview with Mark Grover: What Apache Spark brings to Hadoop <a href="http://www.zdnet.com/faster-more-capable-what-apache-spark-brings-to-hadoop-7000026149/" rel="nofollow">http://www.zdnet.com/faster-more-capable-what-apache-spark-brings-to-hadoop-7000026149/</a></p> <p>Cloudera Meet the Engineer: Mark Grover blog post: <a href="http://blog.cloudera.com/blog/2013/03/meet-the-engineer-mark-grover/" rel="nofollow">http://blog.cloudera.com/blog/2013/03/meet-the-engineer-mark-grover/</a></p>
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    2. POI have created a table in hive, I would like to know which directory my table is created in?
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    1. This table or related slice is empty.
    1. COIt's had to say unless we can take a look at the logs. Do you see anything in the appropriate *.log file under /var/log?
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      1. POHadoop CDH3 ERROR. Could not start Hadoop datanode daemon
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    2. COYes, you are; if your query is easily expressible in HQL.
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    3. COYes,there was. A join essentially does a multiplication of the tables. That was not what you wanted.
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