chenjunjiedada commented on a change in pull request #2841:
URL: https://github.com/apache/iceberg/pull/2841#discussion_r736081077



##########
File path: 
api/src/main/java/org/apache/iceberg/actions/ConvertEqualityDeleteFiles.java
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@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.iceberg.actions;
+
+import org.apache.iceberg.expressions.Expression;
+
+/**
+ * An action for converting the equality delete files to position delete files.
+ */
+public interface ConvertEqualityDeleteFiles
+    extends SnapshotUpdate<ConvertEqualityDeleteFiles, 
ConvertEqualityDeleteFiles.Result> {
+
+  /**
+   * A row filter for finding the equality deletes to convert.
+   * <p>
+   * The row filter will be converted to a partition filter with an inclusive 
projection, so that candidate deletes are
+   * selected if any row match the expression. The matching delete files will 
be converted to position delete files.

Review comment:
       An inclusive metrics evaluator evaluates the file in that way. But when 
the expression was projected to partition filter, since the partition value of 
the file is determined, the matching logic should be determined. Please correct 
me if I understand wrongly.




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