[ https://issues.apache.org/jira/browse/KAFKA-7925?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16784669#comment-16784669 ]
Abhi commented on KAFKA-7925: ----------------------------- I tried the test again. I started the producer application to publish messages on 40 topics using same producer sequentially. I got the org.apache.kafka.common.errors.UnknownServerException again. This time all the servers were running properly without any exceptions. I have uploaded the producer and all brokers server.log at debug level in the issue. Getting the same exception when running consumer group command: env KAFKA_LOG4J_CONFIG=/u/choudhab/kafka/log4j.properties KAFKA_OPTS="-Dsun.security.jgss.native=true -Dsun.security.jgss.lib=/usr/libexec/libgsswrap.so -Djavax.security.auth.useSubjectCredsOnly=false -Djava.security.auth.login.config=/u/bansalp/kafka/producer_jaas.conf" /proj/tools/infra/apache/kafka/kafka_2.12-2.1.1/bin/kafka-consumer-groups.sh --bootstrap-server mwkafka-prod-01.nyc:9092 --command-config /u/choudhab/kafka/command_config --list Error: Executing consumer group command failed due to org.apache.kafka.common.errors.UnknownServerException: Error listing groups on mwkafka-prod-01.dr.xxx.com:9092 (id: 3 rack: dr.xxx.com) java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.UnknownServerException: Error listing groups on mwkafka-prod-01.dr.xxx.com:9092 (id: 3 rack: dr.xxx.com) at org.apache.kafka.common.internals.KafkaFutureImpl.wrapAndThrow(KafkaFutureImpl.java:45) at org.apache.kafka.common.internals.KafkaFutureImpl.access$000(KafkaFutureImpl.java:32) at org.apache.kafka.common.internals.KafkaFutureImpl$SingleWaiter.await(KafkaFutureImpl.java:89) at org.apache.kafka.common.internals.KafkaFutureImpl.get(KafkaFutureImpl.java:262) at kafka.admin.ConsumerGroupCommand$ConsumerGroupService.listGroups(ConsumerGroupCommand.scala:132) at kafka.admin.ConsumerGroupCommand$.main(ConsumerGroupCommand.scala:58) at kafka.admin.ConsumerGroupCommand.main(ConsumerGroupCommand.scala) Caused by: org.apache.kafka.common.errors.UnknownServerException: Error listing groups on mwkafka-prod-01.dr.xxx.com:9092 (id: 3 rack: dr.xxx.com) [2019-03-05 12:13:15,120] WARN [Principal=null]: TGT renewal thread has been interrupted and will exit. (org.apache.kafka.common.security.kerberos.KerberosLogin) > Constant 100% cpu usage by all kafka brokers > -------------------------------------------- > > Key: KAFKA-7925 > URL: https://issues.apache.org/jira/browse/KAFKA-7925 > Project: Kafka > Issue Type: Bug > Components: core > Affects Versions: 2.1.0, 2.1.1 > Environment: Java 11, Kafka v2.1.0, Kafka v2.1.1 > Reporter: Abhi > Priority: Critical > Attachments: threadump20190212.txt > > > Hi, > I am seeing constant 100% cpu usage on all brokers in our kafka cluster even > without any clients connected to any broker. > This is a bug that we have seen multiple times in our kafka setup that is not > yet open to clients. It is becoming a blocker for our deployment now. > I am seeing lot of connections to other brokers in CLOSE_WAIT state (see > below). In thread usage, I am seeing these threads > 'kafka-network-thread-6-ListenerName(SASL_PLAINTEXT)-SASL_PLAINTEXT-0,kafka-network-thread-6-ListenerName(SASL_PLAINTEXT)-SASL_PLAINTEXT-1,kafka-network-thread-6-ListenerName(SASL_PLAINTEXT)-SASL_PLAINTEXT-2' > taking up more than 90% of the cpu time in a 60s interval. > I have attached a thread dump of one of the brokers in the cluster. > *Java version:* > openjdk 11.0.2 2019-01-15 > OpenJDK Runtime Environment 18.9 (build 11.0.2+9) > OpenJDK 64-Bit Server VM 18.9 (build 11.0.2+9, mixed mode) > *Kafka verison:* v2.1.0 > > *connections:* > java 144319 kafkagod 88u IPv4 3063266 0t0 TCP *:35395 (LISTEN) > java 144319 kafkagod 89u IPv4 3063267 0t0 TCP *:9144 (LISTEN) > java 144319 kafkagod 104u IPv4 3064219 0t0 TCP > mwkafka-prod-02.tbd:47292->mwkafka-zk-prod-05.tbd:2181 (ESTABLISHED) > java 144319 kafkagod 2003u IPv4 3055115 0t0 TCP *:9092 (LISTEN) > java 144319 kafkagod 2013u IPv4 7220110 0t0 TCP > mwkafka-prod-02.tbd:60724->mwkafka-zk-prod-04.dr:2181 (ESTABLISHED) > java 144319 kafkagod 2020u IPv4 30012904 0t0 TCP > mwkafka-prod-02.tbd:38988->mwkafka-prod-02.nyc:9092 (ESTABLISHED) > java 144319 kafkagod 2021u IPv4 30012961 0t0 TCP > mwkafka-prod-02.tbd:58420->mwkafka-prod-01.nyc:9092 (ESTABLISHED) > java 144319 kafkagod 2027u IPv4 30015723 0t0 TCP > mwkafka-prod-02.tbd:58398->mwkafka-prod-01.nyc:9092 (ESTABLISHED) > java 144319 kafkagod 2028u IPv4 30015630 0t0 TCP > mwkafka-prod-02.tbd:36248->mwkafka-prod-02.dr:9092 (ESTABLISHED) > java 144319 kafkagod 2030u IPv4 30015726 0t0 TCP > mwkafka-prod-02.tbd:39012->mwkafka-prod-02.nyc:9092 (ESTABLISHED) > java 144319 kafkagod 2031u IPv4 30013619 0t0 TCP > mwkafka-prod-02.tbd:38986->mwkafka-prod-02.nyc:9092 (ESTABLISHED) > java 144319 kafkagod 2032u IPv4 30015604 0t0 TCP > mwkafka-prod-02.tbd:36246->mwkafka-prod-02.dr:9092 (ESTABLISHED) > java 144319 kafkagod 2033u IPv4 30012981 0t0 TCP > mwkafka-prod-02.tbd:36924->mwkafka-prod-01.dr:9092 (ESTABLISHED) > java 144319 kafkagod 2034u IPv4 30012967 0t0 TCP > mwkafka-prod-02.tbd:39036->mwkafka-prod-02.nyc:9092 (ESTABLISHED) > java 144319 kafkagod 2035u IPv4 30012898 0t0 TCP > mwkafka-prod-02.tbd:36866->mwkafka-prod-01.dr:9092 (FIN_WAIT2) > java 144319 kafkagod 2036u IPv4 30004729 0t0 TCP > mwkafka-prod-02.tbd:36882->mwkafka-prod-01.dr:9092 (ESTABLISHED) > java 144319 kafkagod 2037u IPv4 30004914 0t0 TCP > mwkafka-prod-02.tbd:58426->mwkafka-prod-01.nyc:9092 (ESTABLISHED) > java 144319 kafkagod 2038u IPv4 30015651 0t0 TCP > mwkafka-prod-02.tbd:36884->mwkafka-prod-01.dr:9092 (ESTABLISHED) > java 144319 kafkagod 2039u IPv4 30012966 0t0 TCP > mwkafka-prod-02.tbd:58422->mwkafka-prod-01.nyc:9092 (ESTABLISHED) > java 144319 kafkagod 2040u IPv4 30005643 0t0 TCP > mwkafka-prod-02.tbd:36252->mwkafka-prod-02.dr:9092 (ESTABLISHED) > java 144319 kafkagod 2041u IPv4 30012944 0t0 TCP > mwkafka-prod-02.tbd:36286->mwkafka-prod-02.dr:9092 (ESTABLISHED) > java 144319 kafkagod 2042u IPv4 30012973 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51924 (ESTABLISHED) > java 144319 kafkagod 2043u sock 0,7 0t0 30012463 protocol: TCP > java 144319 kafkagod 2044u IPv4 30012979 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.dr:39994 (ESTABLISHED) > java 144319 kafkagod 2045u IPv4 30012899 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.nyc:34548 (ESTABLISHED) > java 144319 kafkagod 2046u sock 0,7 0t0 30003437 protocol: TCP > java 144319 kafkagod 2047u IPv4 30012980 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.dr:38120 (ESTABLISHED) > java 144319 kafkagod 2048u sock 0,7 0t0 30012546 protocol: TCP > java 144319 kafkagod 2049u IPv4 30005418 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.dr:39686 (CLOSE_WAIT) > java 144319 kafkagod 2050u IPv4 30009977 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.nyc:34552 (ESTABLISHED) > java 144319 kafkagod 2060u sock 0,7 0t0 30003439 protocol: TCP > java 144319 kafkagod 2061u IPv4 30012906 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51862 (ESTABLISHED) > java 144319 kafkagod 2069u IPv4 30005642 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.nyc:34570 (ESTABLISHED) > java 144319 kafkagod 2073u sock 0,7 0t0 30003440 protocol: TCP > java 144319 kafkagod 2086u IPv4 30005644 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51878 (ESTABLISHED) > java 144319 kafkagod 2090u sock 0,7 0t0 30012553 protocol: TCP > java 144319 kafkagod 2093u sock 0,7 0t0 30012502 protocol: TCP > java 144319 kafkagod 2097u sock 0,7 0t0 30012531 protocol: TCP > java 144319 kafkagod 2104u IPv4 30005670 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.nyc:34646 (ESTABLISHED) > java 144319 kafkagod 2105u IPv4 30012933 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.dr:38106 (ESTABLISHED) > java 144319 kafkagod 2106u IPv4 30012565 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.nyc:34366 (CLOSE_WAIT) > java 144319 kafkagod 2114u IPv4 30012958 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.dr:39970 (ESTABLISHED) > java 144319 kafkagod 2115u sock 0,7 0t0 30012569 protocol: TCP > java 144319 kafkagod 2117u sock 0,7 0t0 30012571 protocol: TCP > java 144319 kafkagod 2118u IPv4 30012959 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.dr:39972 (ESTABLISHED) > java 144319 kafkagod 2120u IPv4 30012575 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.dr:37868 (CLOSE_WAIT) > java 144319 kafkagod 2121u IPv4 30012960 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.dr:39974 (ESTABLISHED) > java 144319 kafkagod 2122u IPv4 30012577 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.dr:39704 (CLOSE_WAIT) > java 144319 kafkagod 2127u IPv4 29477410 0t0 TCP > mwkafka-prod-02.tbd:58804->u-sonar-sonarsec.sdlb:8826 (ESTABLISHED) > java 144319 kafkagod 2128u IPv4 30012579 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.dr:39708 (CLOSE_WAIT) > java 144319 kafkagod 2129u IPv4 30012962 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.dr:38110 (ESTABLISHED) > java 144319 kafkagod 2130u IPv4 30012582 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.dr:37872 (CLOSE_WAIT) > java 144319 kafkagod 2132u IPv4 30012963 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.dr:38112 (ESTABLISHED) > java 144319 kafkagod 2133u IPv4 30012602 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51622 (CLOSE_WAIT) > java 144319 kafkagod 2135u IPv4 30012964 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51916 (ESTABLISHED) > java 144319 kafkagod 2136u IPv4 30012605 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51626 (CLOSE_WAIT) > java 144319 kafkagod 2139u IPv4 30012965 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51918 (ESTABLISHED) > java 144319 kafkagod 2140u IPv4 30012607 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.dr:39754 (CLOSE_WAIT) > java 144319 kafkagod 2141u IPv4 30010735 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.dr:37878 (CLOSE_WAIT) > java 144319 kafkagod 2144u IPv4 30010741 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.nyc:34402 (CLOSE_WAIT) > java 144319 kafkagod 2145u IPv4 30010742 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51648 (CLOSE_WAIT) > java 144319 kafkagod 2149u IPv4 30012623 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51658 (CLOSE_WAIT) > java 144319 kafkagod 2152u IPv4 30012625 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.nyc:34416 (CLOSE_WAIT) > java 144319 kafkagod 2155u IPv4 30012635 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.dr:39778 (CLOSE_WAIT) > java 144319 kafkagod 2157u IPv4 30012636 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.dr:39780 (CLOSE_WAIT) > java 144319 kafkagod 2162u IPv4 29630161 0t0 TCP > mwkafka-prod-02.tbd:45254->u-sonar-sonarpri.sdlb:8826 (ESTABLISHED) > java 144319 kafkagod 2165u IPv4 30012639 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.dr:37916 (CLOSE_WAIT) > java 144319 kafkagod 2168u IPv4 30012640 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.dr:37918 (CLOSE_WAIT) > java 144319 kafkagod 2169u sock 0,7 0t0 30006888 protocol: TCP > java 144319 kafkagod 2172u IPv4 30012656 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51714 (CLOSE_WAIT) > java 144319 kafkagod 2173u IPv4 30012659 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51718 (CLOSE_WAIT) > java 144319 kafkagod 2176u sock 0,7 0t0 30006891 protocol: TCP > java 144319 kafkagod 2179u sock 0,7 0t0 30012426 protocol: TCP > java 144319 kafkagod 2180u sock 0,7 0t0 30012427 protocol: TCP > java 144319 kafkagod 2183u sock 0,7 0t0 30012429 protocol: TCP > java 144319 kafkagod 2184u sock 0,7 0t0 30012432 protocol: TCP > java 144319 kafkagod 2186u sock 0,7 0t0 30012437 protocol: TCP > java 144319 kafkagod 2187u sock 0,7 0t0 30012459 protocol: TCP > java 144319 kafkagod 2188u sock 0,7 0t0 30012696 protocol: TCP > java 144319 kafkagod 2189u IPv4 30012718 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.nyc:34436 (CLOSE_WAIT) > java 144319 kafkagod 2191u sock 0,7 0t0 30012720 protocol: TCP > java 144319 kafkagod 2192u IPv4 30009662 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.nyc:34456 (CLOSE_WAIT) > java 144319 kafkagod 2193u sock 0,7 0t0 30009663 protocol: TCP > java 144319 kafkagod 2195u sock 0,7 0t0 30012723 protocol: TCP > java 144319 kafkagod 2196u IPv4 30012727 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.dr:37958 (CLOSE_WAIT) > java 144319 kafkagod 2197u sock 0,7 0t0 30012791 protocol: TCP > java 144319 kafkagod 2198u IPv4 30012808 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.dr:39818 (CLOSE_WAIT) > java 144319 kafkagod 2199u IPv4 30012818 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.dr:39838 (CLOSE_WAIT) > java 144319 kafkagod 2200u IPv4 30012836 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.dr:37980 (CLOSE_WAIT) > java 144319 kafkagod 2201u IPv4 30012839 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.dr:37986 (CLOSE_WAIT) > java 144319 kafkagod 2202u IPv4 30012866 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51812 (CLOSE_WAIT) > java 144319 kafkagod 2204u IPv4 30012867 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51814 (CLOSE_WAIT) > java 144319 kafkagod 2205u IPv4 30012872 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.nyc:51846 (CLOSE_WAIT) > java 144319 kafkagod 2206u IPv4 30012873 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-01.dr:39890 (CLOSE_WAIT) > java 144319 kafkagod 2207u IPv4 30012894 0t0 TCP > mwkafka-prod-02.tbd:9092->mwkafka-prod-02.dr:38000 (CLOSE_WAIT) > > -- This message was sent by Atlassian JIRA (v7.6.3#76005)