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https://issues.apache.org/jira/browse/FLINK-3140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15093878#comment-15093878
]
ASF GitHub Bot commented on FLINK-3140:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1465#discussion_r49454443
--- Diff:
flink-staging/flink-table/src/test/scala/org/apache/flink/api/table/typeinfo/RowComparatorTest.scala
---
@@ -0,0 +1,112 @@
+/*
+ * 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.flink.api.table.typeinfo
+
+import org.apache.flink.api.common.ExecutionConfig
+import org.apache.flink.api.common.typeinfo.BasicTypeInfo
+import org.apache.flink.api.common.typeutils.{ComparatorTestBase,
TypeComparator, TypeSerializer}
+import org.apache.flink.api.java.tuple
+import org.apache.flink.api.java.typeutils.{TupleTypeInfo, TypeExtractor}
+import org.apache.flink.api.table.Row
+import org.apache.flink.api.table.typeinfo.RowComparatorTest.MyPojo
+import org.junit.Assert._
+
+class RowComparatorTest extends ComparatorTestBase[Row] {
--- End diff --
`extractKeys` and `getFlatComparators` are not tested by the
`ComparatorTestBase`. It would be good to add (combined) tests for these
methods with `null`-valued atomic and composite fields.
> NULL value data layout in Row Serializer/Comparator
> ---------------------------------------------------
>
> Key: FLINK-3140
> URL: https://issues.apache.org/jira/browse/FLINK-3140
> Project: Flink
> Issue Type: Sub-task
> Components: Table API
> Reporter: Chengxiang Li
> Assignee: Timo Walther
>
> To store/materialize NULL value in Row objects, we should need new Row
> Serializer/Comparator which is aware of NULL value fields.
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