Github user uce commented on a diff in the pull request:
https://github.com/apache/flink/pull/3172#discussion_r97100430
--- 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) {
--- End diff --
This was an historic artifact of the Flink 1.1 key and namespace
serialization with RocksDB. I think we can remove this completely in a
different issue.
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