Re: Kafka gc remark time very long

2019-08-21 Thread Mark Anderson
The first thing I would do is update to the latest Java 8 release. Just in case you are hitting any G1GC bugs in such an old version. Mark On Thu, 22 Aug 2019, 07:17 Xiaobing Bu, wrote: > it not a network issues, since i had capture the network packets. > when the GC remark and unloading class,

Re: Kafka gc remark time very long

2019-08-21 Thread Xiaobing Bu
it not a network issues, since i had capture the network packets. when the GC remark and unloading class, we guess the java application is in stop the world mode, and can not send heartbeat to zookeeper, and after some time, the broker is disconnected from the cluster, so anther clients and brokers

Re: Kafka gc remark time very long

2019-08-21 Thread Eliza
Hi on 2019/8/22 13:48, Xiaobing Bu wrote: [2019-08-07 02:30:04,802] WARN Attempting to send response via channel for which there is no open connection, connection id 10.97.133.17:9092 -10.97.200.19:58674-52592642 (kafka.network.Processor) It seems the network issues. Did you double check the n

Kafka gc remark time very long

2019-08-21 Thread Xiaobing Bu
Hi all, Our kafka cluster on production environment have some problem, some brokers connect to zookeeper timeout almost everyday. There are four brokers, each has 10 core CPU and 8G memory. The following is the server.log , it said broker can not connect to zookeeper. I had capture packets using t