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]



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