[ https://issues.apache.org/jira/browse/KAFKA-19022?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ranganath Samudrala updated KAFKA-19022: ---------------------------------------- Description: While migrating Kafka from zookeeper to kraft, we see errors in logs like INCONSISTENT_CLUSTER_ID in FETCH response or INCONSISTENT_CLUSTER_ID in VOTER response But cluster IDs being compared is not displayed in logs so there is not enough information to see where the issue is. Is the class data *clusterId* empty (which could potentially be a bug?) or incoming *clusterId* empty or incorrect? [KafkaRaftClient|https://github.com/apache/kafka/blob/31e1a57c41cf9cb600751669dc71bcd9596b45f9/raft/src/main/java/org/apache/kafka/raft/KafkaRaftClient.java#L1459] {quote} {{ private boolean hasValidClusterId(String requestClusterId) {}} {{ // We don't enforce the cluster id if it is not provided.}} {{{} if (requestClusterId == null){}}}{{{}Unknown macro: {{}}}{quote} {quote}{{ return true;}}{quote} {quote}{{ }}}{{ return clusterId.equals(requestClusterId);}} {{ }}}{quote} {quote}{{.}}{quote} {quote}{{.}} {{ private CompletableFuture<FetchResponseData> handleFetchRequest(}} {{ RaftRequest.Inbound requestMetadata,}} {{ long currentTimeMs}} {{ ) {}} {{ FetchRequestData request = (FetchRequestData) requestMetadata.data();}}{quote} {quote}{{{} if (!hasValidClusterId(request.clusterId())){}}}{{{}Unknown macro: {{}}}{quote} {quote}{{ return completedFuture(new FetchResponseData().setErrorCode(Errors.INCONSISTENT_CLUSTER_ID.code()));}}{quote} {quote}{{ }}}{quote} {quote}{{.}}{quote} {quote}{{{}.{}}}{{{}{}}}{quote} was: While migrating Kafka from zookeeper to kraft, we see errors in logs like INCONSISTENT_CLUSTER_ID in FETCH response or INCONSISTENT_CLUSTER_ID in VOTER response But cluster IDs being compared is not displayed in logs so there is not enough information to see where the issue is. Is the class data *clusterId* empty (which could potentially be a bug?) or incoming *clusterId* empty or incorrect? [KafkaRaftClient|https://github.com/apache/kafka/blob/31e1a57c41cf9cb600751669dc71bcd9596b45f9/raft/src/main/java/org/apache/kafka/raft/KafkaRaftClient.java#L1459] {quote} private boolean hasValidClusterId(String requestClusterId) { // We don't enforce the cluster id if it is not provided. if (requestClusterId == null){ return true; } return clusterId.equals(requestClusterId); } . . private CompletableFuture<FetchResponseData> handleFetchRequest( RaftRequest.Inbound requestMetadata, long currentTimeMs ) { FetchRequestData request = (FetchRequestData) requestMetadata.data(); if (!hasValidClusterId(request.clusterId())){ return completedFuture(new FetchResponseData().setErrorCode(Errors.INCONSISTENT_CLUSTER_ID.code())); } . . ``` {quote} > Display cluster IDs being compared when encountering INCONSISTENT_CLUSTER_ID > error > ---------------------------------------------------------------------------------- > > Key: KAFKA-19022 > URL: https://issues.apache.org/jira/browse/KAFKA-19022 > Project: Kafka > Issue Type: Improvement > Components: kraft, logging > Affects Versions: 3.9.0 > Reporter: Ranganath Samudrala > Priority: Major > > While migrating Kafka from zookeeper to kraft, we see errors in logs like > INCONSISTENT_CLUSTER_ID in FETCH response > or > INCONSISTENT_CLUSTER_ID in VOTER response > But cluster IDs being compared is not displayed in logs so there is not > enough information to see where the issue is. Is the class data *clusterId* > empty (which could potentially be a bug?) or incoming *clusterId* empty or > incorrect? > [KafkaRaftClient|https://github.com/apache/kafka/blob/31e1a57c41cf9cb600751669dc71bcd9596b45f9/raft/src/main/java/org/apache/kafka/raft/KafkaRaftClient.java#L1459] > {quote} > {{ private boolean hasValidClusterId(String requestClusterId) {}} > {{ // We don't enforce the cluster id if it is not provided.}} > {{{} if (requestClusterId == null){}}}{{{}Unknown macro: {{}}}{quote} > {quote}{{ return true;}}{quote} > {quote}{{ }}}{{ return clusterId.equals(requestClusterId);}} > {{ }}}{quote} > {quote}{{.}}{quote} > {quote}{{.}} > {{ private CompletableFuture<FetchResponseData> handleFetchRequest(}} > {{ RaftRequest.Inbound requestMetadata,}} > {{ long currentTimeMs}} > {{ ) {}} > {{ FetchRequestData request = (FetchRequestData) > requestMetadata.data();}}{quote} > {quote}{{{} if > (!hasValidClusterId(request.clusterId())){}}}{{{}Unknown macro: {{}}}{quote} > {quote}{{ return completedFuture(new > FetchResponseData().setErrorCode(Errors.INCONSISTENT_CLUSTER_ID.code()));}}{quote} > {quote}{{ }}}{quote} > {quote}{{.}}{quote} > {quote}{{{}.{}}}{{{}{}}}{quote} -- This message was sent by Atlassian Jira (v8.20.10#820010)