dajac commented on code in PR #14845:
URL: https://github.com/apache/kafka/pull/14845#discussion_r1415298403
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group-coordinator/src/main/java/org/apache/kafka/coordinator/group/generic/GenericGroup.java:
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@@ -833,13 +835,15 @@ public void validateOffsetCommit(
if (generationId != this.generationId) {
throw Errors.ILLEGAL_GENERATION.exception();
}
- } else if (!isInState(EMPTY)) {
+ } else if (!isTransactional && !isInState(EMPTY)) {
// If the request does not contain the member id and the
generation id (version 0),
// offset commits are only accepted when the group is empty.
+ // This does not apply to transactional offset commits, since the
older versions
+ // of this protocol do not require member id and generation id.
throw Errors.UNKNOWN_MEMBER_ID.exception();
}
- if (isInState(COMPLETING_REBALANCE)) {
+ if (!isTransactional && isInState(COMPLETING_REBALANCE)) {
Review Comment:
No. It is not applied but not for the same reason. For transactional offset
commits, the group state is not checked but I have to admit that I don't know
why. Let me update the comment anyway.
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