FrankYang0529 commented on code in PR #19579:
URL: https://github.com/apache/kafka/pull/19579#discussion_r2063791648
##########
core/src/main/scala/kafka/server/BrokerServer.scala:
##########
@@ -709,7 +709,7 @@ class BrokerServer(
None
}
- val rlm = new RemoteLogManager(config.remoteLogManagerConfig,
config.brokerId, config.logDirs.head, clusterId, time,
+ val rlm = new RemoteLogManager(config.remoteLogManagerConfig,
config.brokerId, config.logDirs.asScala.head, clusterId, time,
Review Comment:
It looks like we can use `getFirst` to avoid redundant conversion.
```suggestion
val rlm = new RemoteLogManager(config.remoteLogManagerConfig,
config.brokerId, config.logDirs.getFirst, clusterId, time,
```
##########
core/src/test/scala/integration/kafka/server/KRaftClusterTest.scala:
##########
@@ -1551,7 +1551,7 @@ class KRaftClusterTest {
// Copy foo-0 to targetParentDir
// This is so that we can rename the main replica to a future down
below
val parentDir = log.parentDir
- val targetParentDir = broker0.config.logDirs.filter(_ !=
parentDir).head
+ val targetParentDir = broker0.config.logDirs.asScala.filter(_ !=
parentDir).head
val targetDirFile = new File(targetParentDir, log.dir.getName)
Review Comment:
```suggestion
val targetParentDir = broker0.config.logDirs.stream().filter(l =>
!l.equals(parentDir)).findFirst()
assertTrue(targetParentDir.isPresent)
val targetDirFile = new File(targetParentDir.get(), log.dir.getName)
```
##########
core/src/main/scala/kafka/server/KafkaConfig.scala:
##########
@@ -241,7 +241,7 @@ class KafkaConfig private(doLog: Boolean, val props:
util.Map[_, _])
def metadataLogDir: String = {
Option(getString(MetadataLogConfig.METADATA_LOG_DIR_CONFIG)) match {
case Some(dir) => dir
- case None => logDirs.head
+ case None => logDirs.asScala.head
Review Comment:
ditto
##########
core/src/test/scala/unit/kafka/server/AlterReplicaLogDirsRequestTest.scala:
##########
@@ -91,10 +91,10 @@ class AlterReplicaLogDirsRequestTest extends
BaseRequestTest {
@ParameterizedTest
@ValueSource(strings = Array("kraft"))
def testAlterReplicaLogDirsRequestErrorCode(quorum: String): Unit = {
- val offlineDir = new
File(brokers.head.config.logDirs.tail.head).getAbsolutePath
- val validDir1 = new File(brokers.head.config.logDirs(1)).getAbsolutePath
- val validDir2 = new File(brokers.head.config.logDirs(2)).getAbsolutePath
- val validDir3 = new File(brokers.head.config.logDirs(3)).getAbsolutePath
+ val offlineDir = new
File(brokers.head.config.logDirs.asScala.tail.head).getAbsolutePath
Review Comment:
```suggestion
val offlineDir = new
File(brokers.head.config.logDirs.getLast).getAbsolutePath
```
##########
core/src/test/scala/unit/kafka/server/DescribeLogDirsRequestTest.scala:
##########
@@ -42,8 +42,8 @@ class DescribeLogDirsRequestTest extends BaseRequestTest {
@ParameterizedTest
@ValueSource(strings = Array("kraft"))
def testDescribeLogDirsRequest(quorum: String): Unit = {
- val onlineDir = new File(brokers.head.config.logDirs.head).getAbsolutePath
- val offlineDir = new
File(brokers.head.config.logDirs.tail.head).getAbsolutePath
+ val onlineDir = new
File(brokers.head.config.logDirs.asScala.head).getAbsolutePath
+ val offlineDir = new
File(brokers.head.config.logDirs.asScala.tail.head).getAbsolutePath
Review Comment:
```suggestion
val onlineDir = new
File(brokers.head.config.logDirs.getFirst).getAbsolutePath
val offlineDir = new
File(brokers.head.config.logDirs.getLast).getAbsolutePath
```
##########
core/src/main/scala/kafka/server/ReplicaManager.scala:
##########
@@ -1237,7 +1237,7 @@ class ReplicaManager(val config: KafkaConfig,
def describeLogDirs(partitions: Set[TopicPartition]):
List[DescribeLogDirsResponseData.DescribeLogDirsResult] = {
val logsByDir = logManager.allLogs.groupBy(log => log.parentDir)
- config.logDirs.toSet.map { logDir: String =>
+ config.logDirs.asScala.toSet.map { logDir: String =>
Review Comment:
Can we change `describeLogDirs` to return `java.util.List`? So we don't need
to convert `logDirs` to Scala and convert result back to Java again in
`KafkaApis`.
##########
core/src/test/scala/unit/kafka/server/KafkaConfigTest.scala:
##########
@@ -1500,7 +1500,7 @@ class KafkaConfigTest {
val config = KafkaConfig.fromProps(props)
assertEquals(metadataDir, config.metadataLogDir)
- assertEquals(Seq(dataDir), config.logDirs)
+ assertEquals(Seq(dataDir), config.logDirs.asScala)
Review Comment:
```suggestion
assertEquals(util.List.of(dataDir), config.logDirs)
```
##########
core/src/test/scala/unit/kafka/server/KafkaConfigTest.scala:
##########
@@ -1165,7 +1165,7 @@ class KafkaConfigTest {
assertEquals(1, config.brokerId)
assertEquals(Seq("PLAINTEXT://127.0.0.1:1122"),
config.effectiveAdvertisedBrokerListeners.map(JTestUtils.endpointToString))
assertEquals(Map("127.0.0.1" -> 2, "127.0.0.2" -> 3),
config.maxConnectionsPerIpOverrides)
- assertEquals(List("/tmp1", "/tmp2"), config.logDirs)
+ assertEquals(List("/tmp1", "/tmp2"), config.logDirs.asScala.toList)
Review Comment:
```suggestion
assertEquals(util.List.of("/tmp1", "/tmp2"), config.logDirs)
```
##########
core/src/test/scala/unit/kafka/server/KafkaConfigTest.scala:
##########
@@ -1518,7 +1518,7 @@ class KafkaConfigTest {
val config = KafkaConfig.fromProps(props)
assertEquals(dataDir1, config.metadataLogDir)
- assertEquals(Seq(dataDir1, dataDir2), config.logDirs)
+ assertEquals(Seq(dataDir1, dataDir2), config.logDirs.asScala)
Review Comment:
```suggestion
assertEquals(util.List.of(dataDir1, dataDir2), config.logDirs)
```
##########
core/src/test/scala/unit/kafka/server/LogRecoveryTest.scala:
##########
@@ -62,8 +64,8 @@ class LogRecoveryTest extends QuorumTestHarness {
var admin: Admin = _
var producer: KafkaProducer[Integer, String] = _
- def hwFile1 = new OffsetCheckpointFile(new File(configProps1.logDirs.head,
ReplicaManager.HighWatermarkFilename), null)
- def hwFile2 = new OffsetCheckpointFile(new File(configProps2.logDirs.head,
ReplicaManager.HighWatermarkFilename), null)
+ def hwFile1 = new OffsetCheckpointFile(new
File(configProps1.logDirs.asScala.head, ReplicaManager.HighWatermarkFilename),
null)
+ def hwFile2 = new OffsetCheckpointFile(new
File(configProps2.logDirs.asScala.head, ReplicaManager.HighWatermarkFilename),
null)
Review Comment:
```suggestion
def hwFile1 = new OffsetCheckpointFile(new
File(configProps1.logDirs.getFirst, ReplicaManager.HighWatermarkFilename), null)
def hwFile2 = new OffsetCheckpointFile(new
File(configProps2.logDirs.getFirst, ReplicaManager.HighWatermarkFilename), null)
```
##########
jmh-benchmarks/src/main/java/org/apache/kafka/jmh/server/PartitionCreationBench.java:
##########
@@ -115,8 +115,7 @@ public void setup() {
this.time = Time.SYSTEM;
this.failureChannel = new
LogDirFailureChannel(brokerProperties.logDirs().size());
final BrokerTopicStats brokerTopicStats = new BrokerTopicStats(false);
- final List<File> files =
-
CollectionConverters.asJava(brokerProperties.logDirs()).stream().map(File::new).collect(Collectors.toList());
+ final List<File> files =
brokerProperties.logDirs().stream().map(File::new).collect(Collectors.toList());
Review Comment:
```suggestion
final List<File> files =
brokerProperties.logDirs().stream().map(File::new).toList();
```
##########
jmh-benchmarks/src/main/java/org/apache/kafka/jmh/server/CheckpointBench.java:
##########
@@ -108,8 +108,7 @@ public void setup() {
this.metrics = new Metrics();
this.time = new MockTime();
this.failureChannel = new
LogDirFailureChannel(brokerProperties.logDirs().size());
- final List<File> files =
-
CollectionConverters.asJava(brokerProperties.logDirs()).stream().map(File::new).collect(Collectors.toList());
+ final List<File> files =
brokerProperties.logDirs().stream().map(File::new).collect(Collectors.toList());
Review Comment:
```suggestion
final List<File> files =
brokerProperties.logDirs().stream().map(File::new).toList();
```
##########
core/src/test/scala/unit/kafka/server/ReplicaManagerTest.scala:
##########
@@ -2771,7 +2771,7 @@ class ReplicaManagerTest {
props.asScala ++= extraProps.asScala
val config = KafkaConfig.fromProps(props)
val logConfig = new LogConfig(new Properties)
- val logDir = new File(new File(config.logDirs.head),
s"$topic-$topicPartition")
+ val logDir = new File(new File(config.logDirs.asScala.head),
s"$topic-$topicPartition")
Review Comment:
```suggestion
val logDir = new File(new File(config.logDirs.getFirst),
s"$topic-$topicPartition")
```
##########
core/src/test/scala/unit/kafka/server/ReplicaManagerTest.scala:
##########
@@ -214,7 +214,7 @@ class ReplicaManagerTest {
partition.createLogIfNotExists(isNew = false, isFutureReplica = false,
new LazyOffsetCheckpoints(rm.highWatermarkCheckpoints.asJava), None)
rm.checkpointHighWatermarks()
- config.logDirs.map(s => Paths.get(s,
ReplicaManager.HighWatermarkFilename))
+ config.logDirs.asScala.map(s => Paths.get(s,
ReplicaManager.HighWatermarkFilename))
.foreach(checkpointFile => assertTrue(Files.exists(checkpointFile),
Review Comment:
```suggestion
config.logDirs.stream().map(s => Paths.get(s,
ReplicaManager.HighWatermarkFilename))
.forEach(checkpointFile => assertTrue(Files.exists(checkpointFile),
```
##########
core/src/test/scala/unit/kafka/server/HighwatermarkPersistenceTest.scala:
##########
@@ -195,7 +197,7 @@ class HighwatermarkPersistenceTest {
}
private def hwmFor(replicaManager: ReplicaManager, topic: String, partition:
Int): Long = {
- replicaManager.highWatermarkCheckpoints(new
File(replicaManager.config.logDirs.head).getAbsolutePath).read().getOrDefault(
+ replicaManager.highWatermarkCheckpoints(new
File(replicaManager.config.logDirs.asScala.head).getAbsolutePath).read().getOrDefault(
Review Comment:
```suggestion
replicaManager.highWatermarkCheckpoints(new
File(replicaManager.config.logDirs.getFirst).getAbsolutePath).read().getOrDefault(
```
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