hachikuji commented on a change in pull request #9689:
URL: https://github.com/apache/kafka/pull/9689#discussion_r539700926
##########
File path:
clients/src/main/java/org/apache/kafka/common/requests/OffsetsForLeaderEpochRequest.java
##########
@@ -143,30 +127,24 @@ public AbstractResponse getErrorResponse(int
throttleTimeMs, Throwable e) {
return new OffsetsForLeaderEpochResponse(responseData);
}
- public static class PartitionData {
- public final Optional<Integer> currentLeaderEpoch;
- public final int leaderEpoch;
-
- public PartitionData(Optional<Integer> currentLeaderEpoch, int
leaderEpoch) {
- this.currentLeaderEpoch = currentLeaderEpoch;
- this.leaderEpoch = leaderEpoch;
- }
-
- @Override
- public String toString() {
- StringBuilder bld = new StringBuilder();
- bld.append("(currentLeaderEpoch=").append(currentLeaderEpoch).
- append(", leaderEpoch=").append(leaderEpoch).
- append(")");
- return bld.toString();
- }
- }
-
/**
* Check whether a broker allows Topic-level permissions in order to use
the
* OffsetForLeaderEpoch API. Old versions require Cluster permission.
*/
public static boolean supportsTopicPermission(short latestUsableVersion) {
return latestUsableVersion >= 3;
}
+
+ /**
+ * Exposed `OffsetForLeaderPartition.currentLeaderEpoch` as an
`java.util.Optional`.
+ *
+ * Classes auto-generated based on the protocol do not support
`java.util.Optional` yet. This
+ * is a temporary workaround until that work is completed.
+ */
+ public static Optional<Integer>
currentLeaderEpochOpt(OffsetForLeaderPartition offsetForLeaderPartition) {
Review comment:
Could we use `RequestUtils.getLeaderEpoch`?
##########
File path: core/src/main/scala/kafka/server/AbstractFetcherThread.scala
##########
@@ -268,11 +271,12 @@ abstract class AbstractFetcherThread(name: String,
fetchOffsets.put(tp, offsetTruncationState)
case Errors.FENCED_LEADER_EPOCH =>
- if (onPartitionFenced(tp, latestEpochsForPartitions.get(tp).flatMap {
- p =>
- if (p.currentLeaderEpoch.isPresent)
Some(p.currentLeaderEpoch.get())
- else None
- })) partitionsWithError += tp
+ val currentLeaderEpoch = latestEpochsForPartitions.get(tp) match {
Review comment:
Maybe we can use `scala.compat.java8.OptionConverters._`?
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