Zhangyx39 commented on a change in pull request #1426:
URL: https://github.com/apache/samza/pull/1426#discussion_r498413299
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File path:
samza-core/src/main/java/org/apache/samza/serializers/IntermediateMessageSerde.java
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@@ -67,7 +67,20 @@ public IntermediateMessageSerde(Serde userMessageSerde) {
public Object fromBytes(byte[] bytes) {
try {
final Object object;
- final MessageType type = MessageType.values()[bytes[0]];
+ final MessageType type;
+ try {
+ type = MessageType.values()[bytes[0]];
+ } catch (ArrayIndexOutOfBoundsException e) {
+ // The message type was introduced in samza 0.13.1. For samza 0.13.0
or older versions, the first byte of
+ // MessageType doesn't exist in the bytes. Thus, upgrading from those
versions will get this exception.
+ // There are two ways to solve this issue:
+ // a) Reset checkpoint or clean all messages for the intermediate topic
Review comment:
Makes sense. Updated.
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