bharos commented on issue #1479:
URL: https://github.com/apache/iceberg/issues/1479#issuecomment-2689200126
Revisiting this issue, I notice even in V1.8 with Spark3.5 iceberg partition
values are having "+" in the path instead of space.
It can pose some problems, For example, let's say I archive iceberg data for
partition `date_key=2023-03-01,name=Entry 1`
in path
```gs://warehouse/retention_service_test_db/iceberg_table/data/date_key=2023-03-01/name=Entry+1/```
Later I want to restore or add back this partition to iceberg using
`add_files` API
To restore, I copy this data into
`gs://warehouse/retention_service_test_db/iceberg_table/data/add_file/date_key=2023-03-01/name=Entry+1/`
### Problem 1:
and call
```
CALL spark_catalog.system.add_files(
table => 'retention_service_test_db.iceberg_table',
source_table =>
'`parquet`.`gs://warehouse/retention_service_test_db/iceberg_table/data/add_file/`',
partition_filter => map('date_key','2023-03-01','name', 'Entry 1')
);
```
It doesn't work saying no matching partitions, because of the "+" in path
### Problem 2:
If I just specify ` partition_filter => map('date_key','2023-03-01')` (or
even skip the partition_filter), it will succeed, but the partition will have
the '+' in the string value ie.
```{"date_key":"2023-03-01","name":"Entry+1"}``` which should actually be
`Entry 1`
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