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https://issues.apache.org/jira/browse/ARROW-1663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16236324#comment-16236324
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ASF GitHub Bot commented on ARROW-1663:
---------------------------------------
BryanCutler commented on a change in pull request #1193: ARROW-1663: use
consistent name for null and not-null in FixedSizeLis…
URL: https://github.com/apache/arrow/pull/1193#discussion_r148620454
##########
File path:
java/vector/src/test/java/org/apache/arrow/vector/pojo/TestConvert.java
##########
@@ -65,6 +71,43 @@ public void complex() {
}
@Test
+ public void list() throws Exception {
+ ImmutableList.Builder<Field> childrenBuilder = ImmutableList.builder();
+ try (BufferAllocator allocator = new RootAllocator(Long.MAX_VALUE);
+ ListVector writeVector = ListVector.empty("list", allocator)) {
+ Field listVectorField = writeVector.getField();
+ childrenBuilder.add(listVectorField);
+ }
+ try (BufferAllocator allocator = new RootAllocator(Long.MAX_VALUE);
+ FixedSizeListVector writeVector =
FixedSizeListVector.empty("fixedlist", 5, allocator)) {
+ Field listVectorField = writeVector.getField();
+ childrenBuilder.add(listVectorField);
+ }
+
+ Field initialField = new Field("a", FieldType.nullable(Struct.INSTANCE),
childrenBuilder.build());
+ ImmutableList.Builder<Field> parentBuilder = ImmutableList.builder();
+ parentBuilder.add(initialField);
+ FlatBufferBuilder builder = new FlatBufferBuilder();
+ builder.finish(initialField.getField(builder));
+ org.apache.arrow.flatbuf.Field flatBufField =
org.apache.arrow.flatbuf.Field.getRootAsField(builder.dataBuffer());
+ Field finalField = Field.convertField(flatBufField);
+ assertEquals(initialField, finalField);
+ assertTrue(!finalField.toString().contains(Field.ZEROVECTOR_OLD_NAME));
+
+
+ Schema initialSchema = new Schema(parentBuilder.build());
+ String jsonSchema = initialSchema.toJson();
+ String modifiedSchema = jsonSchema.replace("$data$", "[DEFAULT]");
+
+ Schema tempSchema = Schema.fromJSON(modifiedSchema);
+ FlatBufferBuilder schemaBuilder = new FlatBufferBuilder();
+ org.apache.arrow.vector.types.pojo.Schema schema = new
org.apache.arrow.vector.types.pojo.Schema(tempSchema.getFields());
+ schemaBuilder.finish(schema.getSchema(schemaBuilder));
+ Schema finalSchema =
Schema.deserialize(ByteBuffer.wrap(schemaBuilder.sizedByteArray()));
+ assertTrue(!finalSchema.toString().contains(Field.ZEROVECTOR_OLD_NAME));
Review comment:
assertFalse instead
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> [Java] Follow up on ARROW-1347 and make schema backward compatible
> ------------------------------------------------------------------
>
> Key: ARROW-1663
> URL: https://issues.apache.org/jira/browse/ARROW-1663
> Project: Apache Arrow
> Issue Type: Bug
> Components: Java - Vectors
> Reporter: Yuliya Feldman
> Assignee: Yuliya Feldman
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.8.0
>
>
> ARROW-1347 covered ListVector to have name of the field $data$ instead of
> [DEFAULT]
> We left FixedSizeListVector behind.
> Another case is backward compatibility - if schema was created before
> ARROW-1347 was in place application may still suffer from side effects as it
> would not be updated based on new code.
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