dyrnq commented on issue #7442:
URL: https://github.com/apache/gravitino/issues/7442#issuecomment-3021448470
> > TKS reply,
> > I don't know if `prefix` related about
`org.apache.iceberg.rest.RESTCatalog` , and it is JUST A Gravitino IRC used
param, and how `Gravitino IRC` get the value.
> > .config("spark.sql.catalog.rest_catalog.catalog-impl",
"org.apache.iceberg.rest.RESTCatalog")
>
> Could you explain more about the problem?
My question is whereis the prefix parameter defined.
```bash
A Spark TableCatalog implementation that wraps an Iceberg
[Catalog](https://iceberg.apache.org/javadoc/latest/org/apache/iceberg/catalog/Catalog.html).
This supports the following catalog configuration options:
type - catalog type, "hive" or "hadoop" or "rest". To specify a non-hive or
hadoop catalog, use the catalog-impl option.
uri - the Hive Metastore URI for Hive catalog or REST URI for REST catalog
warehouse - the warehouse path (Hadoop catalog only)
catalog-impl - a custom
[Catalog](https://iceberg.apache.org/javadoc/latest/org/apache/iceberg/catalog/Catalog.html)
implementation to use
io-impl - a custom
[FileIO](https://iceberg.apache.org/javadoc/latest/org/apache/iceberg/io/FileIO.html)
implementation to use
metrics-reporter-impl - a custom
[MetricsReporter](https://iceberg.apache.org/javadoc/latest/org/apache/iceberg/metrics/MetricsReporter.html)
implementation to use
default-namespace - a namespace to use as the default
cache-enabled - whether to enable catalog cache
cache.case-sensitive - whether the catalog cache should compare table
identifiers in a case sensitive way
cache.expiration-interval-ms - interval in millis before expiring tables
from catalog cache. Refer to
[CatalogProperties.CACHE_EXPIRATION_INTERVAL_MS](https://iceberg.apache.org/javadoc/latest/org/apache/iceberg/CatalogProperties.html#CACHE_EXPIRATION_INTERVAL_MS)
for further details and significant values.
table-default.$tablePropertyKey - table property $tablePropertyKey default
at catalog level
table-override.$tablePropertyKey - table property $tablePropertyKey enforced
at catalog level
```
the prefix parameter not define in `org/apache/iceberg/spark/SparkCatalog`
xref
<https://iceberg.apache.org/javadoc/latest/org/apache/iceberg/spark/SparkCatalog.html>
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