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From "Vanteru, Rammohan Reddy" <rammohanreddy.vant...@blackrock.com>
Subject KafkaBroker's auto thread dumps every 15mins
Date Tue, 02 Oct 2018 19:11:08 GMT
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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