Hadoop on Android

By Ravi Karamsetty | September 7, 2014 |

Android and Hadoop are two technologies to talk about. These individual technologies solve many real time problems. “How about combining them ?” is a question for people interested in future development of technology.

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Loading Customer Data into HBase using a PIG script

By Ravi Karamsetty | August 29, 2014 |

There are different ways to load data into HBase tables like: ‘put’ to manually load data records into HBase, ImportTSV and bulk load options. Alternatively, lets try to load huge customer data file into HBase using Apache PIG. The data set has the following fields:

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33 Frequently Used HDFS Shell Commands

By Ravi Karamsetty | August 26, 2014 |

# Open a terminal window to the current working directory. # /home/training # 1. Print the Hadoop version hadoop version # 2. List the contents of the root directory in HDFS # hadoop fs -ls / # 3. Report the amount of space used and # available on currently mounted filesystem # hadoop fs -df … Continue reading “33 Frequently Used HDFS Shell Commands”

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Computing Moving-Average of Stocks in Hadoop HIVE

By Ravi Karamsetty | August 25, 2014 |

General Sense of Moving Average: Moving Average is a widely used indicator in technical analysis that helps smooth out price action by filtering out the “noise” from random price fluctuations. A moving average (MA) is a trend-following or lagging indicator because it is based on past prices.

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