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Big Data / Blog / Programming

Simple Apache Avro Example using Java

Apache Avro is a popular data serialization system that relies on schemas. The official Avro documentation can be found here: http://avro.apache.org/docs/current/. This post walks through an example of serializing and…

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January 25, 2021
Big Data / Blog / Programming

How to Load a Text File into Spark

Loading text files in Spark is a very common task, and luckily it is easy to do. Below are a few examples of loading a text file (located on the…

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January 25, 2021
Big Data / Blog

Set Empty Fields to Null in Hive

Depending on the data you load into Hive/HDFS, some of your fields might be empty. Having Hive interpret those empty fields as nulls can be very convenient. It is easy…

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January 25, 2021
Big Data / Blog

Get Input File name in Hive Query

Often times it is useful to know the input file name you are processing in a Hive query. This is a common if useful metadata is stored in the file…

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January 25, 2021
Big Data / Blog / Programming

Get List of Objects in S3 Bucket with Java

Often when working with files in S3, you need information about all the items in a particular S3 bucket. Below is an example class that extends the AmazonS3Client class to…

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January 25, 2021
Big Data / Blog / Linux/Shell

Using UNIX Wildcards with AWS S3 (AWS CLI)

Currently AWS CLI doesn’t provide support for UNIX wildcards in a command’s “path” argument. However, it is quite easy to replicate this functionality using the --exclude and --include parameters available…

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January 25, 2021
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