вівторок, 11 листопада 2014 р.

Spark and Location Sensitive Hashing, part 2

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This is a second part of topic about Locality Sensitive Hashing, and here is example of creating working example using Apache Spark. Let...
3 коментарі:
пʼятниця, 7 листопада 2014 р.

Spark and Location Sensitive Hashing, part 1

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Location Sensitive Hashing is the name of special algorithm designed to address complexity of BigData processing. Let's consider t...
пʼятниця, 10 жовтня 2014 р.

Tuning the MapReduce job

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java.lang.OutOfMemoryError: GC overhead limit exceeded  that's what I got yesterday while running my new shining MapReduce job. Ou...
четвер, 9 жовтня 2014 р.

Unit test for Hive query

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Sometimes the soul wants something really extraordinaly... for example, to write a unit test for Hive query :) Let's how it is possibl...
понеділок, 18 серпня 2014 р.

Writing in ElasticSearch directly from Hadoop MapReduce

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ElasticSearch is a hot topic today. This is powerful open source search and analytics engine that makes data easy to explore. Several times ...
середа, 13 серпня 2014 р.

Geo Coordinates converting

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I've made discovery working on the last task: could you imagine that there are many many many geographical coordinate systems in the wor...
четвер, 24 липня 2014 р.

Hadoop 2.2 Distributed Cache and Map Join

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It's very common to use Distributed Cache for Map joins - it gives a possibility to implement extremely fast join of huge dataset with a...