[ASTERIXDB-3032][RT] Fix Int32 MsgPackAccessors

- user mode changes: no
- storage format changes: no
- interface changes: no

Details:
- Write an int instead of a byte in MsgPackInt32Accessor

Change-Id: Idfea18f85eee6ef5702f1991a475c0c830ec420e
Reviewed-on: https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/16283
Contrib: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Michael Blow <mblow@apache.org>
diff --git a/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/library/msgpack/MsgPackAccessors.java b/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/library/msgpack/MsgPackAccessors.java
index a90a183..6efbb6e 100644
--- a/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/library/msgpack/MsgPackAccessors.java
+++ b/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/library/msgpack/MsgPackAccessors.java
@@ -124,7 +124,7 @@
             int s = pointable.getStartOffset();
             int i = AInt32SerializerDeserializer.getInt(b, s + 1);
             out.writeByte(INT32);
-            out.writeByte(i);
+            out.writeInt(i);
             return null;
         }
     }