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https://issues.apache.org/jira/browse/KAFKA-16905?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin McCabe resolved KAFKA-16905.
----------------------------------
Resolution: Fixed
> Thread block in describe topics API in Admin Client
> ---------------------------------------------------
>
> Key: KAFKA-16905
> URL: https://issues.apache.org/jira/browse/KAFKA-16905
> Project: Kafka
> Issue Type: Bug
> Components: clients
> Affects Versions: 3.8.0, 3.9.0
> Reporter: Apoorv Mittal
> Assignee: Apoorv Mittal
> Priority: Major
> Fix For: 3.8.0
>
>
> The threads blocks while running admin client's descirbe topics API.
>
> {code:java}
> "kafka-admin-client-thread | adminclient-3" #114 daemon prio=5 os_prio=31
> cpu=6.57ms elapsed=417.17s tid=0x00000001364fc200 nid=0x13403 waiting on
> condition [0x00000002bb419000]
> java.lang.Thread.State: WAITING (parking)
> at jdk.internal.misc.Unsafe.park([email protected]/Native Method)
> - parking to wait for <0x0000000773804828> (a
> java.util.concurrent.CompletableFuture$Signaller)
> at
> java.util.concurrent.locks.LockSupport.park([email protected]/LockSupport.java:211)
> at
> java.util.concurrent.CompletableFuture$Signaller.block([email protected]/CompletableFuture.java:1864)
> at
> java.util.concurrent.ForkJoinPool.unmanagedBlock([email protected]/ForkJoinPool.java:3463)
> at
> java.util.concurrent.ForkJoinPool.managedBlock([email protected]/ForkJoinPool.java:3434)
> at
> java.util.concurrent.CompletableFuture.waitingGet([email protected]/CompletableFuture.java:1898)
> at
> java.util.concurrent.CompletableFuture.get([email protected]/CompletableFuture.java:2072)
> at
> org.apache.kafka.common.internals.KafkaFutureImpl.get(KafkaFutureImpl.java:165)
> at
> org.apache.kafka.clients.admin.KafkaAdminClient.handleDescribeTopicsByNamesWithDescribeTopicPartitionsApi(KafkaAdminClient.java:2324)
> at
> org.apache.kafka.clients.admin.KafkaAdminClient.describeTopics(KafkaAdminClient.java:2122)
> at org.apache.kafka.clients.admin.Admin.describeTopics(Admin.java:311)
> at
> io.confluent.kafkarest.controllers.TopicManagerImpl.describeTopics(TopicManagerImpl.java:155)
> at
> io.confluent.kafkarest.controllers.TopicManagerImpl.lambda$listTopics$2(TopicManagerImpl.java:76)
> at
> io.confluent.kafkarest.controllers.TopicManagerImpl$$Lambda$1925/0x0000000800891448.apply(Unknown
> Source)
> at
> java.util.concurrent.CompletableFuture$UniCompose.tryFire([email protected]/CompletableFuture.java:1150)
> at
> java.util.concurrent.CompletableFuture.postComplete([email protected]/CompletableFuture.java:510)
> at
> java.util.concurrent.CompletableFuture.complete([email protected]/CompletableFuture.java:2147)
> at
> io.confluent.kafkarest.common.KafkaFutures.lambda$toCompletableFuture$0(KafkaFutures.java:45)
> at
> io.confluent.kafkarest.common.KafkaFutures$$Lambda$1909/0x0000000800897528.accept(Unknown
> Source)
> at
> org.apache.kafka.common.internals.KafkaFutureImpl.lambda$whenComplete$2(KafkaFutureImpl.java:107)
> at
> org.apache.kafka.common.internals.KafkaFutureImpl$$Lambda$1910/0x0000000800897750.accept(Unknown
> Source)
> at
> java.util.concurrent.CompletableFuture.uniWhenComplete([email protected]/CompletableFuture.java:863)
> at
> java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire([email protected]/CompletableFuture.java:841)
> at
> java.util.concurrent.CompletableFuture.postComplete([email protected]/CompletableFuture.java:510)
> at
> java.util.concurrent.CompletableFuture.complete([email protected]/CompletableFuture.java:2147)
> at
> org.apache.kafka.common.internals.KafkaCompletableFuture.kafkaComplete(KafkaCompletableFuture.java:39)
> at
> org.apache.kafka.common.internals.KafkaFutureImpl.complete(KafkaFutureImpl.java:122)
> at
> org.apache.kafka.clients.admin.KafkaAdminClient$4.handleResponse(KafkaAdminClient.java:2106)
> at
> org.apache.kafka.clients.admin.KafkaAdminClient$AdminClientRunnable.handleResponses(KafkaAdminClient.java:1370)
> at
> org.apache.kafka.clients.admin.KafkaAdminClient$AdminClientRunnable.processRequests(KafkaAdminClient.java:1523)
> at
> org.apache.kafka.clients.admin.KafkaAdminClient$AdminClientRunnable.run(KafkaAdminClient.java:1446)
> at java.lang.Thread.run([email protected]/Thread.java:833) {code}
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