Update README.md

add example for big lake metastore

README.md

@@ -86,6 +86,30 @@ catalogOptions: # all other options are passed through in a map
   key1: value1
   key2: value2
 ```
+Here's an example `my_config.yaml` and `catalog.yaml` files to sync with BigLake Metastore:
+
+1. my_config.yaml
+```yaml
+sourceFormat: HUDI
+targetFormats:
+  - ICEBERG
+datasets:
+  -
+    tableBasePath: gs://path/to/source/data
+    tableName: table_name
+    namespace: database_name
+```
+
+2. catalog.yaml
+```yaml
+catalogImpl: org.apache.iceberg.gcp.biglake.BigLakeCatalog
+catalogName: catalog_name
+catalogOptions:
+  gcp_project: gcp_project_name
+  gcp_location: location # example us-west1
+  warehouse: gs://path/to/warehouse
+```
+
 5. run with `java -jar utilities/target/utilities-0.1.0-SNAPSHOT-bundled.jar --datasetConfig my_config.yaml [--hadoopConfig hdfs-site.xml] [--clientsConfig clients.yaml] [--icebergCatalogConfig catalog.yaml]`
 The bundled jar includes hadoop dependencies for AWS, Azure, and GCP. Authentication for AWS is done with 
 `com.amazonaws.auth.DefaultAWSCredentialsProviderChain`. To override this setting, specify a different implementation 
@@ -102,4 +126,4 @@ You have found a bug, or have a cool idea you that want to contribute to the pro
 Adding a new target format requires a developer implement [TargetClient](./api/src/main/java/io/onetable/spi/sync/TargetClient.java). Once you have implemented that interface, you can integrate it into the [OneTableClient](./core/src/main/java/io/onetable/client/OneTableClient.java). If you think others may find that target useful, please raise a Pull Request to add it to the project.
 
 ## Overview of the sync process
-![img.png](docs/images/sync_flow.jpg)
+![img.png](docs/images/sync_flow.jpg)