[jira] [Closed] (ARROW-11936) Rust/Java incorrect serialization of Struct wrapped Int8Dictionary

["Andrew Lamb (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-11936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Lamb closed ARROW-11936.
-------------------------------
    Resolution: Invalid

> Rust/Java incorrect serialization of Struct wrapped Int8Dictionary
> ------------------------------------------------------------------
>
>                 Key: ARROW-11936
>                 URL: https://issues.apache.org/jira/browse/ARROW-11936
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Java, Rust
>    Affects Versions: 3.0.0
>            Reporter: Justin
>            Priority: Major
>              Labels: serialization
>
> Using rust, serialized datatype to a file with a schema of
> {code:java}
> Field { name: "val", data_type: Struct([Field { name: "val", data_type: Utf8, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: None }]), nullable: false, dict_id: 0, dict_is_ordered: false, metadata: None }{code}
> Using a java client to read the serialized datatype results in a schema of
> {code:java}
> Schema<val: Struct<val: Utf8 not null> not null>{code}
> whilst calling ArrowFileReader.loadNextBatch() results in
> {code:java}
> Exception in thread "main" java.util.NoSuchElementExceptionException in thread "main" java.util.NoSuchElementException at java.base/java.util.ArrayList$Itr.next(ArrayList.java:1000) at org.apache.arrow.vector.VectorLoader.loadBuffers(VectorLoader.java:81) at org.apache.arrow.vector.VectorLoader.loadBuffers(VectorLoader.java:99) at org.apache.arrow.vector.VectorLoader.load(VectorLoader.java:61) at org.apache.arrow.vector.ipc.ArrowReader.loadRecordBatch(ArrowReader.java:205) at org.apache.arrow.vector.ipc.ArrowFileReader.loadNextBatch(ArrowFileReader.java:153)
> {code}



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