linhr commented on issue #14529:
URL: https://github.com/apache/iceberg/issues/14529#issuecomment-3505884197
After some more experimentation, the following works for me.
```bash
pyspark \
--packages org.apache.iceberg:iceberg-spark-runtime-3.5_2.12:1.10.0 \
--conf spark.sql.catalog.local=org.apache.iceberg.spark.SparkCatalog \
--conf spark.sql.catalog.local.type=hadoop \
--conf spark.sql.catalog.local.warehouse=$PWD/warehouse
```
```python
spark.sql("CREATE TABLE local.db.table (id bigint) USING iceberg")
spark.sql("INSERT INTO local.db.table VALUES (1), (2)")
spark.read.format("iceberg").load("warehouse/db/table")
spark.range(5).write.format("iceberg").mode("overwrite").save("warehouse/db/table")
spark.range(5).write.format("iceberg").mode("append").save("warehouse/db/table")
```
And I need to explicitly specify the `overwrite` or `append` mode. The
`error` (default) or `ignore` mode would fail.
So it seems the v1 writer only works in certain modes for an existing table
written by the v2 writer. Could this be improved?
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