ElapsedSoul commented on issue #4837:
URL: https://github.com/apache/iceberg/issues/4837#issuecomment-1135294638
Thanks for @ajantha-bhat ,
I put the demo code here:
```java
import java.util.HashMap;
import java.util.Map;
import org.apache.iceberg.Table;
import org.apache.iceberg.catalog.TableIdentifier;
import org.apache.iceberg.hive.HiveCatalog;
import org.apache.iceberg.spark.actions.SparkActions;
import org.apache.spark.sql.SparkSession;
public class IcebergMergeFile {
public static void main(String[] args) throws Exception {
SparkSession spark = SparkSession
.builder()
.appName("IcebergMergeFile")
.getOrCreate();
HiveCatalog catalog = new HiveCatalog();
catalog.setConf(spark.sparkContext().hadoopConfiguration());
Map <String, String> properties = new HashMap<String, String>();
properties.put("uri", "thrift://127.0.0.1:9083");
catalog.initialize("hive", properties);
TableIdentifier name = TableIdentifier.of("ice_database", "ice_t1");
// or to load an existing table, use the following line
Table table = catalog.loadTable(name);
SparkActions
.get()
.rewriteDataFiles(table)
.option("target-file-size-bytes", Long.toString(500 * 1024 *
1024)) // 500 MB
.execute();
spark.stop();
}
}
```
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