Github user NicoK commented on a diff in the pull request:
https://github.com/apache/flink/pull/3172#discussion_r97279222
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/query/netty/message/KvStateRequestSerializer.java
---
@@ -377,22 +376,24 @@ public static Throwable
deserializeServerFailure(ByteBuf buf) throws IOException
0,
serializedKeyAndNamespace.length);
- K key = keySerializer.deserialize(dis);
- byte magicNumber = dis.readByte();
- if (magicNumber != 42) {
- throw new IllegalArgumentException("Unexpected magic
number " + magicNumber +
- ". This indicates a mismatch in the key
serializers used by the " +
- "KvState instance and this access.");
- }
- N namespace = namespaceSerializer.deserialize(dis);
+ try {
+ K key = keySerializer.deserialize(dis);
+ byte magicNumber = dis.readByte();
+ if (magicNumber != 42) {
+ throw new IOException("Unexpected magic number
" + magicNumber + ".");
+ }
+ N namespace = namespaceSerializer.deserialize(dis);
- if (dis.available() > 0) {
- throw new IllegalArgumentException("Unconsumed bytes in
the serialized key " +
- "and namespace. This indicates a
mismatch in the key/namespace " +
- "serializers used by the KvState
instance and this access.");
- }
+ if (dis.available() > 0) {
+ throw new IOException("Unconsumed bytes in the
serialized key and namespace.");
+ }
- return new Tuple2<>(key, namespace);
+ return new Tuple2<>(key, namespace);
+ } catch (IOException e) {
--- End diff --
it may, but there are other `IOException`s in deeper code, e.g. in
`dis.readByte();` and I did not want any special code separating these from our
`IOException`s and considered this the least obtrusive variant
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