Sequence files are good for saving raw data into HDFS. Sequence files are compressible and splittable. It is also useful for combining a number of smaller files into a single...
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01b: Convert XML file To Sequence File – writing & reading – Hadoop File System (i.e HDFS)
This extends Convert XML file To Sequence File – writing & reading – Local File System. Step 1: Upload “report.xml” onto HDFS. E.g using the Cloudera HUE on to path...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs02: Convert XML file To Sequence File with Apache Spark – writing & reading
This extends the Convert XML file To Sequence File With Hadoop libaries, by using Apache Spark. Step 1: The pom.xml file should include the Apache Spark libraries as shown below....
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs03: Convert XML file To an Avro File – writing & reading
This extends the Convert XML file To Sequence File With Hadoop libaries. Avro files are schema driven & support schema evolution, which means you can add new columns & …...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs04: Convert XML file To an Avro File with Apache Spark – writing & reading
This extends Convert XML file To an Avro File – writing & reading. Step 1: The pom.xml file should include the Apache Spark & … Read more ›...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs05: Convert XML file To an Avro File with avro-maven-plugin & Apache Spark
This extends 04: Convert XML file To an Avro File with Apache Spark – writing & reading. Instead of using the GenericRecord, let’s generate an avro schema object from the...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs06: Avro Schema evolution tutorial
Q1. What do you understand by the term “AVRO schema evolution“?
A1. Schema evolution is the term used for how the store behaves when Avro schema is changed after data has been written to the store using an older version of that schema.
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07: Avro IDL (e.g. avdl) to Java objects & Avro Schemas (i.e. avsc) tutorial
Avro IDL (i.e Interface Definition Language) schema can be specified with two type of files “avpr” (i.e. AVro PRotocol file) & “avdl” (i.e. AVro iDL). Step 1: Create a maven...
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