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https://issues.apache.org/jira/browse/DRILL-6810?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16660507#comment-16660507
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ASF GitHub Bot commented on DRILL-6810:
---------------------------------------
arina-ielchiieva commented on a change in pull request #1509: DRILL-6810:
Disable NULL_IF_NULL NullHandling for functions with Comp…
URL: https://github.com/apache/drill/pull/1509#discussion_r227337409
##########
File path:
exec/java-exec/src/test/java/org/apache/drill/exec/fn/impl/TestParseFunctions.java
##########
@@ -0,0 +1,80 @@
+/*
+ * 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.drill.exec.fn.impl;
+
+import org.apache.drill.categories.SqlFunctionTest;
+import org.apache.drill.test.ClusterFixture;
+import org.apache.drill.test.ClusterFixtureBuilder;
+import org.apache.drill.test.ClusterTest;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
+
+import static org.apache.drill.test.TestBuilder.mapOf;
+
+@Category(SqlFunctionTest.class)
+public class TestParseFunctions extends ClusterTest {
+
+ @BeforeClass
+ public static void setup() throws Exception {
+ generateDataSource();
+ ClusterFixtureBuilder builder = ClusterFixture.builder(dirTestWatcher);
+ startCluster(builder);
+ }
+
+ private static void generateDataSource() throws Exception {
+ try (BufferedWriter writer = new BufferedWriter(new FileWriter(
+ new File(dirTestWatcher.getRootDir(), "nullable_urls.json")))) {
+ String[] urls =
{"\"ftp://somewhere.com:3190/someFile?a=12&b=someValue\"";, null,
"\"http://someUrl?p1=v1&p2=v=2&\""};
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> Disable NULL_IF_NULL NullHandling for functions with ComplexWriter
> ------------------------------------------------------------------
>
> Key: DRILL-6810
> URL: https://issues.apache.org/jira/browse/DRILL-6810
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.14.0
> Reporter: Bohdan Kazydub
> Assignee: Bohdan Kazydub
> Priority: Major
> Fix For: 1.15.0
>
>
> Currently NullHandling.NULL_IF_NULL is allowed for UDFs with @Output of type
> org.apache.drill.exec.vector.complex.writer.BaseWriter.ComplexWriter but no
> null handling is performed for the kind of functions which leads to
> confusion. The problem is ComplexWriter holds list/map values and Drill does
> not yet support NULL values for the types (there is an issue to allow null
> maps/lists in [DRILL-4824|https://issues.apache.org/jira/browse/DRILL-4824]).
> For such functions support for NULL_IF_NULL will be disabled, as it is done
> for aggregate functions, and NullHandling.INTERNAL should be used instead.
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