rdblue opened a new issue #1396:
URL: https://github.com/apache/iceberg/issues/1396
When we try to read a Parquet file with a map using `NameMapping`, it fails
because the schema generated has a different name for the key/value pair struct:
```
org.apache.iceberg.bdp.shaded.org.apache.parquet.io.InvalidRecordException:
key_value not found in optional group properties (MAP) = 1 {
repeated group map {
required binary key (UTF8) = 8;
optional binary value (UTF8) = 9;
}
}
at
org.apache.iceberg.bdp.shaded.org.apache.parquet.schema.GroupType.getFieldIndex(GroupType.java:146)
at
org.apache.iceberg.bdp.shaded.org.apache.parquet.schema.GroupType.getType(GroupType.java:178)
at
org.apache.iceberg.bdp.shaded.org.apache.parquet.schema.GroupType.getType(GroupType.java:282)
at
org.apache.iceberg.bdp.shaded.org.apache.parquet.schema.GroupType.getType(GroupType.java:282)
at
org.apache.iceberg.bdp.shaded.org.apache.parquet.schema.MessageType.getType(MessageType.java:90)
at
org.apache.iceberg.parquet.ParquetMetricsRowGroupFilter$MetricsEvalVisitor.eval(ParquetMetricsRowGroupFilter.java:91)
at
org.apache.iceberg.parquet.ParquetMetricsRowGroupFilter$MetricsEvalVisitor.access$100(ParquetMetricsRowGroupFilter.java:77)
at
org.apache.iceberg.parquet.ParquetMetricsRowGroupFilter.shouldRead(ParquetMetricsRowGroupFilter.java:71)
at org.apache.iceberg.parquet.ReadConf.<init>(ReadConf.java:99)
at org.apache.iceberg.parquet.ParquetReader.init(ParquetReader.java:66)
at
org.apache.iceberg.parquet.ParquetReader.iterator(ParquetReader.java:77)
at
org.apache.iceberg.spark.source.RowDataReader.open(RowDataReader.java:103)
at
org.apache.iceberg.spark.source.BaseDataReader.next(BaseDataReader.java:73)
```
The names generated when applying the name mapping do not match the original
schema. The name mapping code should be updated to add field IDs and not change
anything else in the file schema.
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