Hi Kafka Users, We have 3 KafkaBrokers(i.e kafka version 0.11) configured which is auto dumping thread dumps for every 12mins without posting any errors or warnings in logs but brokers are not crashing. At the moment Kafka brokers not experiencing any high load. Let me know if anyone has faced similar issue and if there is a way to fix it. Please find the attached server.properties
[2018-10-02 13:33:57,060] INFO [Group Metadata Manager on Broker 1002]: Removed 0 expired offsets in 0 milliseconds. (kafka.coordinator.group.GroupMetadataManager) 2018-10-02 13:41:40 Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.45-b02 mixed mode): "executor-Rebalance" #102 prio=5 os_prio=0 tid=0x00007fb304001000 nid=0x17edb waiting on condition [0x00007fb361f0f000] -- [2018-10-02 13:53:57,060] INFO [Group Metadata Manager on Broker 1002]: Removed 0 expired offsets in 0 milliseconds. (kafka.coordinator.group.GroupMetadataManager) 2018-10-02 13:53:59 Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.45-b02 mixed mode): "executor-Rebalance" #102 prio=5 os_prio=0 tid=0x00007fb304001000 nid=0x17edb waiting on condition [0x00007fb361f0f000] -- [2018-10-02 14:03:57,060] INFO [Group Metadata Manager on Broker 1002]: Removed 0 expired offsets in 0 milliseconds. (kafka.coordinator.group.GroupMetadataManager) 2018-10-02 14:06:20 Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.45-b02 mixed mode): "executor-Rebalance" #102 prio=5 os_prio=0 tid=0x00007fb304001000 nid=0x17edb waiting on condition [0x00007fb361f0f000] -- [2018-10-02 14:13:57,060] INFO [Group Metadata Manager on Broker 1002]: Removed 0 expired offsets in 0 milliseconds. (kafka.coordinator.group.GroupMetadataManager) 2018-10-02 14:18:39 Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.45-b02 mixed mode): "executor-Rebalance" #102 prio=5 os_prio=0 tid=0x00007fb304001000 nid=0x17edb waiting on condition [0x00007fb361f0f000] -- [2018-10-02 14:23:57,060] INFO [Group Metadata Manager on Broker 1002]: Removed 0 expired offsets in 0 milliseconds. (kafka.coordinator.group.GroupMetadataManager) 2018-10-02 14:30:59 Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.45-b02 mixed mode): "executor-Rebalance" #102 prio=5 os_prio=0 tid=0x00007fb304001000 nid=0x17edb waiting on condition [0x00007fb361f0f000] -- [2018-10-02 14:33:57,060] INFO [Group Metadata Manager on Broker 1002]: Removed 0 expired offsets in 0 milliseconds. (kafka.coordinator.group.GroupMetadataManager) 2018-10-02 14:43:18 Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.45-b02 mixed mode): "executor-Rebalance" #102 prio=5 os_prio=0 tid=0x00007fb304001000 nid=0x17edb waiting on condition [0x00007fb361f0f000] -- [2018-10-02 14:53:57,060] INFO [Group Metadata Manager on Broker 1002]: Removed 0 expired offsets in 0 milliseconds. (kafka.coordinator.group.GroupMetadataManager) 2018-10-02 14:55:38 Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.45-b02 mixed mode): "executor-Rebalance" #102 prio=5 os_prio=0 tid=0x00007fb304001000 nid=0x17edb waiting on condition [0x00007fb361f0f000] This message may contain information that is confidential or privileged. If you are not the intended recipient, please advise the sender immediately and delete this message. See http://www.blackrock.com/corporate/en-us/compliance/email-disclaimers for further information. Please refer to http://www.blackrock.com/corporate/en-us/compliance/privacy-policy for more information about BlackRock’s Privacy Policy. For a list of BlackRock's office addresses worldwide, see http://www.blackrock.com/corporate/en-us/about-us/contacts-locations. © 2018 BlackRock, Inc. All rights reserved.
