nsivabalan commented on code in PR #8053:
URL: https://github.com/apache/hudi/pull/8053#discussion_r1119186983


##########
hudi-gcp/src/main/java/org/apache/hudi/gcp/bigquery/BigQuerySyncConfig.java:
##########
@@ -75,26 +87,32 @@ public class BigQuerySyncConfig extends HoodieSyncConfig 
implements Serializable
   public static final ConfigProperty<String> BIGQUERY_SYNC_SYNC_BASE_PATH = 
ConfigProperty
       .key("hoodie.gcp.bigquery.sync.base_path")
       .noDefaultValue()
+      .withInferFunction(cfg -> 
Option.ofNullable(cfg.getString(META_SYNC_BASE_PATH)))
       .withDocumentation("Base path of the hoodie table to sync");
 
   public static final ConfigProperty<String> BIGQUERY_SYNC_PARTITION_FIELDS = 
ConfigProperty
       .key("hoodie.gcp.bigquery.sync.partition_fields")
       .noDefaultValue()
+      .withInferFunction(cfg -> 
Option.ofNullable(cfg.getString(HoodieTableConfig.PARTITION_FIELDS))
+          .or(() -> 
Option.ofNullable(cfg.getString(KeyGeneratorOptions.PARTITIONPATH_FIELD_NAME))))
       .withDocumentation("Comma-delimited partition fields. Default to 
non-partitioned.");
 
   public static final ConfigProperty<Boolean> 
BIGQUERY_SYNC_USE_FILE_LISTING_FROM_METADATA = ConfigProperty
       .key("hoodie.gcp.bigquery.sync.use_file_listing_from_metadata")
-      .defaultValue(false)
+      .defaultValue(DEFAULT_METADATA_ENABLE_FOR_READERS)
+      .withInferFunction(cfg -> 
Option.of(cfg.getBooleanOrDefault(HoodieMetadataConfig.ENABLE, 
DEFAULT_METADATA_ENABLE_FOR_READERS)))

Review Comment:
   not sure if this is right. we are fetching from write config to deduce the 
read value for enabling metadata. 



##########
hudi-gcp/src/main/java/org/apache/hudi/gcp/bigquery/BigQuerySyncConfig.java:
##########
@@ -75,26 +87,32 @@ public class BigQuerySyncConfig extends HoodieSyncConfig 
implements Serializable
   public static final ConfigProperty<String> BIGQUERY_SYNC_SYNC_BASE_PATH = 
ConfigProperty
       .key("hoodie.gcp.bigquery.sync.base_path")
       .noDefaultValue()
+      .withInferFunction(cfg -> 
Option.ofNullable(cfg.getString(META_SYNC_BASE_PATH)))
       .withDocumentation("Base path of the hoodie table to sync");
 
   public static final ConfigProperty<String> BIGQUERY_SYNC_PARTITION_FIELDS = 
ConfigProperty
       .key("hoodie.gcp.bigquery.sync.partition_fields")
       .noDefaultValue()
+      .withInferFunction(cfg -> 
Option.ofNullable(cfg.getString(HoodieTableConfig.PARTITION_FIELDS))

Review Comment:
   Incase of custom key generator, I guess format of 
tableConfig.PARTITION_FIELDS and KeyGeneratorOptions.PARTITIONPATH_FIELD_NAME 
might differ. 
   for eg
   simple:col1
   vs col1
   



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