Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 32 insertions, 0 deletions

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+<!---
+  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
+
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+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
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+  under the License.
+-->
+
+# Arrow Java API Changes
+
+This document tracks behavior changes to Java APIs, as listed below.
+
+- **[ARROW-5973](https://issues.apache.org/jira/browse/ARROW-5973)**:
+  * **Start date**: 2019/07/18
+  * **Resolve date**: 2019/07/20
+  * **Brief description**: The semantics of the get methods for [VarCharVector](./vector/scr/main/org/apache/arrow/vector/VarCharVector.java), [VarBinaryVector](./vector/scr/main/org/apache/arrow/vector/VarBinaryVector.java), and [FixedSizeBinaryVector](./vector/scr/main/org/apache/arrow/vector/FixedSizeBinaryVector.java) changes. In the past, if the validity bit is clear, the methods throw throws an IllegalStateException when NULL_CHECKING_ENABLED is set, or returns an empty object when the flag is not set. Now, the get methods return a null if the validity bit is clear.
+
+- **[ARROW-5842](https://issues.apache.org/jira/browse/ARROW-5842)**:
+  * **Start date**: 2019/07/04
+  * **Resolve date**: 2019/07/11
+  * **Brief description**: The semantics of lastSet member in class [ListVector](./vector/src/main/java/org/apache/arrow/vector/complex/ListVector.java) changes. In the past, it refers to the next index that will be set. After the change it points to the last index that is actually set.