BewareMyPower commented on code in PR #20948:
URL: https://github.com/apache/pulsar/pull/20948#discussion_r1303923315
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pulsar-client/src/main/java/org/apache/pulsar/client/impl/ConsumerImpl.java:
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@@ -1449,6 +1449,15 @@ private ByteBuf processMessageChunk(ByteBuf
compressedPayload, MessageMetadata m
// discard message if chunk is out-of-order
if (chunkedMsgCtx == null || chunkedMsgCtx.chunkedMsgBuffer == null
|| msgMetadata.getChunkId() !=
(chunkedMsgCtx.lastChunkedMessageId + 1)) {
+ // Filter duplicated chunks instead of discard it.
+ if (chunkedMsgCtx == null || msgMetadata.getChunkId() <=
chunkedMsgCtx.lastChunkedMessageId) {
Review Comment:
It happens when there is no cached `chunkedMsgCtx` while the consumer
receives a chunk whose id is not 0. Normally, the consumer should not receive
the chunk-i (i > 0) before receiving chunk-0.
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