nrj179 opened a new pull request, #30079:
URL: https://github.com/apache/beam/pull/30079
Adding below lines in
PubsubIO.readMessagesWithAttributesAndMessageIdAndOrderingKey()
`.setNeedsAttributes(true)
.setNeedsMessageId(true)
`
would enable PubsubUnboundedSource.expand method to select the correct
Serializable function to parse PubsubMessage.
```
if (getNeedsAttributes() || getNeedsMessageId()) {
function = new PubsubMessages.ParsePubsubMessageProtoAsPayload();
} else {
function = new DeserializeBytesIntoPubsubMessagePayloadOnly();
}
```
Thus preventing **the CoderException: cannot encode a null String** in
PubsubMessageWithAttributesAndMessageIdAndOrderingKeyCoder.encode.
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