walterddr commented on a change in pull request #8340:
URL: https://github.com/apache/pinot/pull/8340#discussion_r825152088
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File path:
pinot-query-planner/src/main/java/org/apache/pinot/query/catalog/PinotCatalog.java
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@@ -0,0 +1,83 @@
+package org.apache.pinot.query.catalog;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Set;
+import org.apache.calcite.linq4j.tree.Expression;
+import org.apache.calcite.rel.type.RelProtoDataType;
+import org.apache.calcite.schema.Function;
+import org.apache.calcite.schema.Schema;
+import org.apache.calcite.schema.SchemaPlus;
+import org.apache.calcite.schema.SchemaVersion;
+import org.apache.calcite.schema.Table;
+import org.apache.pinot.common.config.provider.TableCache;
+import org.apache.pinot.spi.utils.builder.TableNameBuilder;
+
+
+/**
+ * Simple Catalog that only contains list of tables. Backed by {@link
TableCache}.
+ */
+public class PinotCatalog implements Schema {
Review comment:
this extends apache calcite plugin Schema. required to use calcite
logical rel plan optimizer
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