PetrasTYR opened a new issue, #1105:
URL: https://github.com/apache/iceberg-python/issues/1105
### Question
Hello, I have a question regarding iceberg table snapshots. I used pyiceberg
to create a namespace and a table, then insert a dataframe like so:
```
from pyiceberg.catalog import load_rest
from pyiceberg.schema import Schema
from pyiceberg.types import StringType, NestedField, DoubleType
from pyiceberg.partitioning import PartitionSpec, PartitionField
import numpy as np
import pandas as pd
rows = 10**1
ncols = 10
countries = ["US", "CA", "UK"]
attr2 = ["OPEN", "CLOSE", "LOW", "HIGH"]
dates = pd.date_range("2020-01-01", "2020-12-31")
data_orig = pd.DataFrame(
[
{
"countries": countries[i % len(countries)],
"status": attr2[i % len(attr2)],
"return_index": np.random.rand(),
}
for i in range(rows)
]
)
schema = Schema(
NestedField(field_id=1, name="countries", field_type=StringType(),
required=False),
NestedField(field_id=2, name="status", field_type=StringType(),
required=False),
NestedField(
field_id=3, name="return_index", field_type=DoubleType(),
required=False
),
)
partition_spec = PartitionSpec(
fields=[
PartitionField(
source_id=1, field_id=1000, name="countries",
transform="identity"
),
PartitionField(source_id=2, field_id=1001, name="status",
transform="identity"),
]
)
catalog = load_rest(
"rest",
conf={
"uri": "http://localhost:19120/iceberg";,
},
)
catalog.create_namespace_if_not_exists("rpmd")
tables = catalog.list_tables(namespace="rpmd")
table = catalog.create_table_if_not_exists(
identifier="rpmd.performance", schema=schema,
partition_spec=partition_spec
)
import pyarrow as pa
import pyarrow.parquet as pq
tbl = pa.Table.from_pandas(data_orig)
table.append(tbl)
```
When i run this script a second time, it is my understanding that the
`append` method would create a new commit, and in turn, a new snapshot of the
rpmd.performance iceberg table, and i should be able to see a list of snapshots
in the latest metadata.json file. However, i only see the latest snapshot in
the array, and running `table.inspect.snapshots()` only shows 1 snapshot_id,
even though i see all the relevant .avro files.
May i know if there is some configuration i need to do to ensure that i can
see all snapshots?
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