bowenli86 commented on a change in pull request #8480: [FLINK-12552][table]:
Combine HiveCatalog and GenericHiveMetastoreCat…
URL: https://github.com/apache/flink/pull/8480#discussion_r285403349
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File path:
flink-connectors/flink-connector-hive/src/main/java/org/apache/flink/table/catalog/hive/HiveCatalog.java
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@@ -54,117 +75,494 @@
import java.util.Map;
import java.util.stream.Collectors;
+import static org.apache.flink.util.Preconditions.checkArgument;
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
/**
- * A catalog implementation for Hive.
+ * Base class for catalogs backed by Hive metastore.
*/
-public class HiveCatalog extends HiveCatalogBase {
+public class HiveCatalog implements Catalog {
private static final Logger LOG =
LoggerFactory.getLogger(HiveCatalog.class);
+ private static final String DEFAULT_DB = "default";
- public HiveCatalog(String catalogName, String hivemetastoreURI) {
- super(catalogName, hivemetastoreURI);
+ // Prefix used to distinguish properties created by Hive and Flink,
+ // as Hive metastore has its own properties created upon table creation
and migration between different versions of metastore.
+ private static final String FLINK_PROPERTY_PREFIX = "flink.";
+ private static final String GENERC_META_PROPERTY_KEY =
"flink.is_generic";
Review comment:
In flink we usually name the variable as same as possible to the actual
value. The 'PROPERTY' in the name is also a bit confusing. I named the above
key 'FLINK_PROPERTY_PREFIX' because it's appended to every property key in the
properties, while this is a single key itself.
Shall it be something like "FLINK_IS_GENERIC_KEY"?
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