avro-tools | 易学教程

Concat Avro files using avro-tools

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问题 Im trying to merge avro files into one big file, the problem is concat command does not accept the wildcard hadoop jar avro-tools.jar concat /input/part* /output/bigfile.avro I get: Exception in thread "main" java.io.FileNotFoundException: File does not exist: /input/part* I tried to use "" and '' but no chance. 回答1: I quickly checked Avro's source code (1.7.7) and it seems that concat does not support glob patterns (basically, they call FileSystem.open() on each argument except the last one)

Generate Avro file based on java file

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问题 There are plugins that can generate java file using Avro schema. Is there a reverse of that? I would like to generate Avro schema based on java file. 回答1: Kite SDK has a lot of useful things to work with Avro Schema. Take a look to this http://kitesdk.org/docs/1.1.0/Inferring-a-Schema-from-a-Java-Class.html 来源： https://stackoverflow.com/questions/45700725/generate-avro-file-based-on-java-file

Is there a way to programmatically convert JSON to AVRO Schema?

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问题 I need to create AVRO file but for that I need 2 things: 1) JSON 2) Avro Schema From these 2 requirements - I have JSON: {"web-app": { "servlet": [ { "servlet-name": "cofaxCDS", "servlet-class": "org.cofax.cds.CDSServlet", "init-param": { "configGlossary:installationAt": "Philadelphia, PA", "configGlossary:adminEmail": "ksm@pobox.com", "configGlossary:poweredBy": "Cofax", "configGlossary:poweredByIcon": "/images/cofax.gif", "configGlossary:staticPath": "/content/static",

Is there a way to programmatically convert JSON to AVRO Schema?

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I need to create AVRO file but for that I need 2 things: 1) JSON 2) Avro Schema From these 2 requirements - I have JSON: {"web-app": { "servlet": [ { "servlet-name": "cofaxCDS", "servlet-class": "org.cofax.cds.CDSServlet", "init-param": { "configGlossary:installationAt": "Philadelphia, PA", "configGlossary:adminEmail": "ksm@pobox.com", "configGlossary:poweredBy": "Cofax", "configGlossary:poweredByIcon": "/images/cofax.gif", "configGlossary:staticPath": "/content/static", "templateProcessorClass": "org.cofax.WysiwygTemplate", "templateLoaderClass": "org.cofax.FilesTemplateLoader", "templatePath