chia7712 commented on code in PR #19630:
URL: https://github.com/apache/kafka/pull/19630#discussion_r2085105937
##########
core/src/main/scala/kafka/server/RemoteLeaderEndPoint.scala:
##########
@@ -154,40 +157,40 @@ class RemoteLeaderEndPoint(logPrefix: String,
val tp = new TopicPartition(offsetForLeaderTopicResult.topic,
offsetForLeaderPartitionResult.partition)
tp -> offsetForLeaderPartitionResult
}
- }.toMap
+ }.toMap.asJava
} catch {
case t: Throwable =>
warn(s"Error when sending leader epoch request for $partitions", t)
// if we get any unexpected exception, mark all partitions with an
error
val error = Errors.forException(t)
- partitions.map { case (tp, _) =>
+ tmpPartitions.map { case (tp, _) =>
tp -> new EpochEndOffset()
.setPartition(tp.partition)
.setErrorCode(error.code)
- }
+ }.asJava
}
}
- override def buildFetch(partitions: Map[TopicPartition,
PartitionFetchState]): ResultWithPartitions[Option[ReplicaFetch]] = {
+ override def buildFetch(partitions: java.util.Map[TopicPartition,
PartitionFetchState]): ResultWithPartitions[java.util.Optional[ReplicaFetch]] =
{
val partitionsWithError = mutable.Set[TopicPartition]()
-
+ val tmpPartitions = partitions.asScala.toMap
val builder = fetchSessionHandler.newBuilder(partitions.size, false)
- partitions.foreachEntry { (topicPartition, fetchState) =>
+ tmpPartitions.foreachEntry { (topicPartition, fetchState) =>
Review Comment:
```
partitions.forEach
```
##########
core/src/main/scala/kafka/server/AbstractFetcherThread.scala:
##########
@@ -204,11 +210,25 @@ abstract class AbstractFetcherThread(name: String,
* occur during truncation.
*/
private def truncateToEpochEndOffsets(latestEpochsForPartitions:
Map[TopicPartition, EpochData]): Unit = {
- val endOffsets = leader.fetchEpochEndOffsets(latestEpochsForPartitions)
- //Ensure we hold a lock during truncation.
+
+ val partitionsMap = new java.util.HashMap[TopicPartition,
OffsetForLeaderPartition]()
+
+ latestEpochsForPartitions.asJava.forEach { case (tp, epochData) =>
+ // Create a new OffsetForLeaderPartition from EpochData
+ val offsetForLeaderPartition = new OffsetForLeaderPartition()
+ .setPartition(tp.partition())
+ .setCurrentLeaderEpoch(epochData.currentLeaderEpoch)
+ .setLeaderEpoch(epochData.leaderEpoch)
+
+ partitionsMap.put(tp, offsetForLeaderPartition)
+ }
+
+ val endOffsets = leader.fetchEpochEndOffsets(partitionsMap)
Review Comment:
```
val endOffsets =
leader.fetchEpochEndOffsets(latestEpochsForPartitions.asJava)
```
##########
core/src/main/scala/kafka/server/AbstractFetcherThread.scala:
##########
@@ -284,7 +304,7 @@ abstract class AbstractFetcherThread(name: String,
}
}
- ResultWithPartitions(fetchOffsets, partitionsWithError)
+ new ResultWithPartitions[Map[TopicPartition,
OffsetTruncationState]](fetchOffsets, new
java.util.HashSet[TopicPartition](partitionsWithError.asJava))
Review Comment:
```
new ResultWithPartitions(fetchOffsets, partitionsWithError.asJava)
```
##########
core/src/main/scala/kafka/server/AbstractFetcherThread.scala:
##########
@@ -204,11 +210,25 @@ abstract class AbstractFetcherThread(name: String,
* occur during truncation.
*/
private def truncateToEpochEndOffsets(latestEpochsForPartitions:
Map[TopicPartition, EpochData]): Unit = {
- val endOffsets = leader.fetchEpochEndOffsets(latestEpochsForPartitions)
- //Ensure we hold a lock during truncation.
+
+ val partitionsMap = new java.util.HashMap[TopicPartition,
OffsetForLeaderPartition]()
+
+ latestEpochsForPartitions.asJava.forEach { case (tp, epochData) =>
+ // Create a new OffsetForLeaderPartition from EpochData
+ val offsetForLeaderPartition = new OffsetForLeaderPartition()
+ .setPartition(tp.partition())
+ .setCurrentLeaderEpoch(epochData.currentLeaderEpoch)
+ .setLeaderEpoch(epochData.leaderEpoch)
+
+ partitionsMap.put(tp, offsetForLeaderPartition)
+ }
+
+ val endOffsets = leader.fetchEpochEndOffsets(partitionsMap)
+
+ // Ensure we hold a lock during truncation
inLock(partitionMapLock) {
- //Check no leadership and no leader epoch changes happened whilst we
were unlocked, fetching epochs
Review Comment:
please keep this comment
##########
server/src/main/java/org/apache/kafka/server/PartitionFetchState.java:
##########
@@ -0,0 +1,133 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+package org.apache.kafka.server;
+
+import org.apache.kafka.common.Uuid;
+import org.apache.kafka.common.utils.Time;
+
+import java.util.Optional;
+
+/**
+ * Class to keep partition offset and its state (truncatingLog, delayed)
+ * This represents a partition as being either:
+ * (1) Truncating its log, for example, having recently become a follower
+ * (2) Delayed, for example, due to an error, where we subsequently back off a
bit
+ * (3) ReadyForFetch, the active state where the thread is actively fetching
data.
+ */
+public class PartitionFetchState {
Review Comment:
this can be record class, right?
##########
core/src/main/java/kafka/server/TierStateMachine.java:
##########
@@ -136,12 +136,13 @@ private OffsetForLeaderEpochResponseData.EpochEndOffset
fetchEarlierEpochEndOffs
// Find the end-offset for the epoch earlier to the given epoch from
the leader
Map<TopicPartition,
OffsetForLeaderEpochRequestData.OffsetForLeaderPartition> partitionsWithEpochs
= new HashMap<>();
partitionsWithEpochs.put(partition, new
OffsetForLeaderEpochRequestData.OffsetForLeaderPartition().setPartition(partition.partition()).setCurrentLeaderEpoch(currentLeaderEpoch).setLeaderEpoch(previousEpoch));
- Option<OffsetForLeaderEpochResponseData.EpochEndOffset>
maybeEpochEndOffset =
leader.fetchEpochEndOffsets(CollectionConverters.asScala(partitionsWithEpochs)).get(partition);
- if (maybeEpochEndOffset.isEmpty()) {
+ var endOffsets = leader.fetchEpochEndOffsets(partitionsWithEpochs);
Review Comment:
```
var epochEndOffset =
leader.fetchEpochEndOffsets(partitionsWithEpochs).get(partition);
```
##########
core/src/test/scala/unit/kafka/server/MockLeaderEndPoint.scala:
##########
@@ -136,39 +135,41 @@ class MockLeaderEndPoint(sourceBroker: BrokerEndPoint =
new BrokerEndPoint(1, "l
new OffsetAndEpoch(leaderState.localLogStartOffset,
leaderState.leaderEpoch)
}
- override def fetchEpochEndOffsets(partitions: Map[TopicPartition,
EpochData]): Map[TopicPartition, EpochEndOffset] = {
+ override def fetchEpochEndOffsets(partitions: java.util.Map[TopicPartition,
OffsetForLeaderEpochRequestData.OffsetForLeaderPartition]):
java.util.Map[TopicPartition, EpochEndOffset] = {
val endOffsets = mutable.Map[TopicPartition, EpochEndOffset]()
- partitions.foreachEntry { (partition, epochData) =>
+ val tmpPartitions = partitions.asScala
+ tmpPartitions.foreachEntry { (partition, epochData) =>
assert(partition.partition == epochData.partition,
"Partition must be consistent between TopicPartition and EpochData")
val leaderState = leaderPartitionState(partition)
val epochEndOffset = lookupEndOffsetForEpoch(partition, epochData,
leaderState)
endOffsets.put(partition, epochEndOffset)
}
- endOffsets
+ endOffsets.asJava
}
- override def buildFetch(partitionMap: Map[TopicPartition,
PartitionFetchState]): ResultWithPartitions[Option[ReplicaFetch]] = {
+ override def buildFetch(partitions: java.util.Map[TopicPartition,
PartitionFetchState]): ResultWithPartitions[java.util.Optional[ReplicaFetch]] =
{
val fetchData = mutable.Map.empty[TopicPartition,
FetchRequest.PartitionData]
- partitionMap.foreach { case (partition, state) =>
+ val tmpPartitions = partitions.asScala.toMap
+ tmpPartitions.foreach { case (partition, state) =>
if (state.isReadyForFetch) {
val replicaState =
replicaPartitionStateCallback(partition).getOrElse(throw new
IllegalArgumentException(s"Unknown partition $partition"))
val lastFetchedEpoch = if (isTruncationOnFetchSupported)
state.lastFetchedEpoch
else
Optional.empty[Integer]
fetchData.put(partition,
- new
FetchRequest.PartitionData(state.topicId.getOrElse(Uuid.ZERO_UUID),
state.fetchOffset, replicaState.logStartOffset,
+ new FetchRequest.PartitionData(state.topicId.orElse(Uuid.ZERO_UUID),
state.fetchOffset, replicaState.logStartOffset,
1024 * 1024, Optional.of[Integer](state.currentLeaderEpoch),
lastFetchedEpoch))
}
}
val fetchRequest = FetchRequest.Builder.forReplica(version, replicaId, 1,
0, 1, fetchData.asJava)
val fetchRequestOpt =
if (fetchData.isEmpty)
- None
+ java.util.Optional.empty[ReplicaFetch]()
else
- Some(ReplicaFetch(fetchData.asJava, fetchRequest))
- ResultWithPartitions(fetchRequestOpt, Set.empty)
+ Optional.of(new ReplicaFetch(fetchData.asJava, fetchRequest))
+ new
ResultWithPartitions[java.util.Optional[ReplicaFetch]](fetchRequestOpt,
java.util.Collections.emptySet[TopicPartition]())
Review Comment:
```
new ResultWithPartitions(fetchRequestOpt, java.util.Collections.emptySet())
```
##########
core/src/main/scala/kafka/server/AbstractFetcherThread.scala:
##########
@@ -779,7 +799,7 @@ abstract class AbstractFetcherThread(name: String,
// TODO: use fetchTierStateMachine.maybeAdvanceState when implementing
async tiering logic in KAFKA-13560
- fetcherLagStats.getAndMaybePut(topicPartition).lag =
newFetchState.lag.getOrElse(0)
+ fetcherLagStats.getAndMaybePut(topicPartition).lag = if
(newFetchState.lag.isPresent) newFetchState.lag.get() else 0L
Review Comment:
```
newFetchState.lag.orElse(0L)
```
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