contactsunny/parquet_file_writer_poc

This is a simple Java POC to create Parquet files This is a Spring Boot project.

parquet_file_writer_poc's Issues

no native lib Mac

The build failed on Mac with:
org.xerial.snappy.SnappyError: [FAILED_TO_LOAD_NATIVE_LIBRARY] no native library is found for os.name=Mac and os.arch=aarch64

This is solved by upgrading parquet-hadoop to 1.13.0

It could also be good to add to the readme that settings in the application.properties needs to be filled in or better yet set them to the relative path:

schema.filePath=src/main/resources/schemas/user.schema
output.directoryPath=src/main/resources/output

After those two changes it worked fine on Mac.

Null values in an array

Parquet_File_Writer_POC/src/main/java/com/contactsunny/poc/parquet_file_writer_poc/parquet/CustomWriteSupport.java

Line 49 in 5eea4b4

case BOOLEAN:

How do you add null values in an array?

Not able to execute the project

Encountered below error:
Action:

Correct the classpath of your application so that it contains a single, compatible version of org.springframework.expression.spel.support.StandardTypeConverter

Issues with Binary data type

Rest all is working fine, but binary data type is written in encrypted format. When a parquet file is cat using parquet-tools, it shows something like this.

• /Desktop/parq/Parquet_File_Writer_POC/src/main/resources/output$ parquet-tools cat 1638791144218.parquet
  id = 1
  username = TmFtZTE=
  active = true

id = 2
username = TmFtZTI=
active = false

because of this my files are not processed further