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https://issues.apache.org/jira/browse/AVRO-2058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16103636#comment-16103636
]
ASF GitHub Bot commented on AVRO-2058:
--------------------------------------
GitHub user samschlegel opened a pull request:
https://github.com/apache/avro/pull/237
[AVRO-2058] ReflectData#isNonStringMap returns true for Utf8 keys
https://issues.apache.org/jira/browse/AVRO-2058
Since `Utf8` does not have an `Stringable` notation, and is not in
`SpecificData#stringableClasses`, `ReflectData#isNonStringMap` returns true.
This also causes `ReflectData#isArray` to return true for maps with Utf8 keys,
and thus `GenericData#resolveUnion` fails as well. This ultimately causes
`ReflectData#write` to fail for schemas that contain a union that contains a
map, where the data uses Utf8 for strings.
This following test case reproduces the issue:
```java
@Test public void testUnionWithMapWithUtf8Keys() {
Schema s = new Schema.Parser().parse
("[\"null\", {\"type\":\"map\",\"values\":\"float\"}]");
GenericData data = ReflectData.get();
HashMap<Utf8,Float> map = new HashMap<Utf8,Float>();
map.put(new Utf8("foo"), 1.0f);
assertEquals(1, data.resolveUnion(s, map));
}
```
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/samschlegel/avro master
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/avro/pull/237.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #237
----
commit 8852da40e7a0ee58d9b027173a4972e7e71b432d
Author: Sam Schlegel <g...@lutin.us>
Date: 2017-07-27T02:20:51Z
Add failing test
commit 15fbb40944dc15a37569aa6a3d2e93db0e085af0
Author: Sam Schlegel <g...@lutin.us>
Date: 2017-07-27T02:23:21Z
Add Stringable annotation
----
> ReflectData#isNonStringMap returns true for Utf8 keys
> -----------------------------------------------------
>
> Key: AVRO-2058
> URL: https://issues.apache.org/jira/browse/AVRO-2058
> Project: Avro
> Issue Type: Bug
> Components: java
> Affects Versions: 1.8.2
> Reporter: Sam Schlegel
> Priority: Critical
> Attachments: AVRO-2058.patch
>
>
> Since {{Utf8}} does not have an {{Stringable}} notation, and is not in
> {{SpecificData#stringableClasses}}, {{ReflectData#isNonStringMap}} returns
> true. This also causes {{ReflectData#isArray}} to return true for maps with
> Utf8 keys, and thus {{GenericData#resolveUnion}} fails as well. This
> ultimately causes {{ReflectData#write}} to fail for schemas that contain a
> union that contains a map, where the data uses Utf8 for strings.
> This following test case reproduces the issue:
> {code:java}
> @Test public void testUnionWithMapWithUtf8Keys() {
> Schema s = new Schema.Parser().parse
> ("[\"null\", {\"type\":\"map\",\"values\":\"float\"}]");
> GenericData data = ReflectData.get();
> HashMap<Utf8,Float> map = new HashMap<Utf8,Float>();
> map.put(new Utf8("foo"), 1.0f);
> assertEquals(1, data.resolveUnion(s, map));
> }
> {code}
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