hachikuji commented on code in PR #12653:
URL: https://github.com/apache/kafka/pull/12653#discussion_r973350559
##########
core/src/main/scala/kafka/raft/KafkaMetadataLog.scala:
##########
@@ -48,6 +48,17 @@ final class KafkaMetadataLog private (
this.logIdent = s"[MetadataLog partition=$topicPartition,
nodeId=${config.nodeId}] "
+ // If the log start offset is not 0, then we must have a snapshot which
covers the
+ // initial state up to the current log start offset.
+ if (log.logStartOffset > 0) {
+ val latestSnapshotId = snapshots.lastOption.map(_._1)
+ if (!latestSnapshotId.exists(snapshotId => snapshotId.offset >=
log.logStartOffset)) {
+ throw new IllegalStateException("Inconsistent snapshot state: there must
be a snapshot " +
+ s"at an offset larger then the current log start offset
${log.logStartOffset}, but the " +
+ s"latest snapshot is ${latestSnapshotId}")
+ }
+ }
+
Review Comment:
Makes sense.
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