[PARQUET-2153] Cannot read schema from parquet file

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.12.3
• Component/s: parquet-avro
• Assignee: Unassigned Assign to me
• Reporter: Nils Broman
• Created: 07/Jun/22 14:07
• Updated: 14/Jun/22 11:08

Description

I'm trying to generate a Avro schema from a parquet file. I get the issue both when using https://github.com/benwatson528/intellij-avro-parquet-plugin in Intellij as well as when I'm using my own implementation of generating a schema.

The parquet file contains nested entries and arrays: {"a": a, "b": [

{"c": c}

]}

I get the following error message:

org.apache.avro.SchemaParseException: Can't redefine: element
    at org.apache.avro.Schema$Names.put(Schema.java:1547)
    at org.apache.avro.Schema$NamedSchema.writeNameRef(Schema.java:810)
    at org.apache.avro.Schema$RecordSchema.toJson(Schema.java:972)
    at org.apache.avro.Schema$UnionSchema.toJson(Schema.java:1239)
    at org.apache.avro.Schema$RecordSchema.fieldsToJson(Schema.java:1000)
    at org.apache.avro.Schema$RecordSchema.toJson(Schema.java:984)
    at org.apache.avro.Schema$ArraySchema.toJson(Schema.java:1134)
    at org.apache.avro.Schema$UnionSchema.toJson(Schema.java:1239)
    at org.apache.avro.Schema$RecordSchema.fieldsToJson(Schema.java:1000)
    at org.apache.avro.Schema$RecordSchema.toJson(Schema.java:984)
    at org.apache.avro.Schema$UnionSchema.toJson(Schema.java:1239)
    at org.apache.avro.Schema$RecordSchema.fieldsToJson(Schema.java:1000)
    at org.apache.avro.Schema$RecordSchema.toJson(Schema.java:984)
    at org.apache.avro.Schema.toString(Schema.java:424)
    at org.apache.avro.Schema.toString(Schema.java:396)
    at uk.co.hadoopathome.intellij.viewer.fileformat.ParquetFileReader.getSchema(ParquetFileReader.java:65)
    at uk.co.hadoopathome.intellij.viewer.FileViewerToolWindow$2.doInBackground(FileViewerToolWindow.java:196)
    at uk.co.hadoopathome.intellij.viewer.FileViewerToolWindow$2.doInBackground(FileViewerToolWindow.java:184)
    at java.desktop/javax.swing.SwingWorker$1.call(SwingWorker.java:304)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at java.desktop/javax.swing.SwingWorker.run(SwingWorker.java:343)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:829) 

It appears to be an issue similar to PARQUET-1441 or PARQUET-1409.

Or could it possibly be something wrong in my parquet file?