What about in dmesg? I have run into this issue and it was the OOM killer. I also ran into a heap issue using too much of the direct memory (JVM). Reducing the fetcher threads helped with that problem. On Jun 2, 2016 12:19 PM, "allen chan" <allen.michael.c...@gmail.com> wrote:
> Hi Tom, > > That is one of the first things that i checked. Active memory never goes > above 50% of overall available. File cache uses the rest of the memory but > i do not think that causes OOM killer. > Either way there is no entries in /var/log/messages (centos) to show OOM is > happening. > > Thanks > > On Thu, Jun 2, 2016 at 5:36 AM, Tom Crayford <tcrayf...@heroku.com> wrote: > > > That looks like somebody is killing the process. I'd suspect either the > > linux OOM killer or something else automatically killing the JVM for some > > reason. > > > > For the OOM killer, assuming you're on ubuntu, it's pretty easy to find > in > > /var/log/syslog (depending on your setup). I don't know about other > > operating systems. > > > > On Thu, Jun 2, 2016 at 5:54 AM, allen chan <allen.michael.c...@gmail.com > > > > wrote: > > > > > I have an issue where my brokers would randomly shut itself down. > > > I turned on debug in log4j.properties but still do not see a reason why > > the > > > shutdown is happening. > > > > > > Anyone seen this behavior before? > > > > > > version 0.10.0 > > > log4j.properties > > > log4j.rootLogger=DEBUG, kafkaAppender > > > * I tried TRACE level but i do not see any additional log messages > > > > > > snippet of log around shutdown > > > [2016-06-01 15:11:51,374] DEBUG Got ping response for sessionid: > > > 0x2550a693b470001 after 1ms (org.apache.zookeeper.ClientCnxn) > > > [2016-06-01 15:11:53,376] DEBUG Got ping response for sessionid: > > > 0x2550a693b470001 after 1ms (org.apache.zookeeper.ClientCnxn) > > > [2016-06-01 15:11:55,377] DEBUG Got ping response for sessionid: > > > 0x2550a693b470001 after 1ms (org.apache.zookeeper.ClientCnxn) > > > [2016-06-01 15:11:57,380] DEBUG Got ping response for sessionid: > > > 0x2550a693b470001 after 1ms (org.apache.zookeeper.ClientCnxn) > > > [2016-06-01 15:11:59,383] DEBUG Got ping response for sessionid: > > > 0x2550a693b470001 after 1ms (org.apache.zookeeper.ClientCnxn) > > > [2016-06-01 15:12:01,386] DEBUG Got ping response for sessionid: > > > 0x2550a693b470001 after 1ms (org.apache.zookeeper.ClientCnxn) > > > [2016-06-01 15:12:03,389] DEBUG Got ping response for sessionid: > > > 0x2550a693b470001 after 1ms (org.apache.zookeeper.ClientCnxn) > > > [2016-06-01 15:12:04,121] INFO [Group Metadata Manager on Broker 2]: > > > Removed 0 expired offsets in 0 milliseconds. > > > (kafka.coordinator.GroupMetadataManager) > > > [2016-06-01 15:12:04,121] INFO [Group Metadata Manager on Broker 2]: > > > Removed 0 expired offsets in 0 milliseconds. > > > (kafka.coordinator.GroupMetadataManager) > > > [2016-06-01 15:12:05,390] DEBUG Got ping response for sessionid: > > > 0x2550a693b470001 after 1ms (org.apache.zookeeper.ClientCnxn) > > > [2016-06-01 15:12:07,393] DEBUG Got ping response for sessionid: > > > 0x2550a693b470001 after 1ms (org.apache.zookeeper.ClientCnxn) > > > [2016-06-01 15:12:09,396] DEBUG Got ping response for sessionid: > > > 0x2550a693b470001 after 1ms (org.apache.zookeeper.ClientCnxn) > > > [2016-06-01 15:12:11,399] DEBUG Got ping response for sessionid: > > > 0x2550a693b470001 after 1ms (org.apache.zookeeper.ClientCnxn) > > > [2016-06-01 15:12:13,334] INFO [Kafka Server 2], shutting down > > > (kafka.server.KafkaServer) > > > [2016-06-01 15:12:13,334] INFO [Kafka Server 2], shutting down > > > (kafka.server.KafkaServer) > > > [2016-06-01 15:12:13,336] INFO [Kafka Server 2], Starting controlled > > > shutdown (kafka.server.KafkaServer) > > > [2016-06-01 15:12:13,336] INFO [Kafka Server 2], Starting controlled > > > shutdown (kafka.server.KafkaServer) > > > [2016-06-01 15:12:13,338] DEBUG Added sensor with name > > connections-closed: > > > (org.apache.kafka.common.metrics.Metrics) > > > [2016-06-01 15:12:13,338] DEBUG Added sensor with name > > connections-created: > > > (org.apache.kafka.common.metrics.Metrics) > > > [2016-06-01 15:12:13,338] DEBUG Added sensor with name > > bytes-sent-received: > > > (org.apache.kafka.common.metrics.Metrics) > > > [2016-06-01 15:12:13,338] DEBUG Added sensor with name bytes-sent: > > > (org.apache.kafka.common.metrics.Metrics) > > > [2016-06-01 15:12:13,339] DEBUG Added sensor with name bytes-received: > > > (org.apache.kafka.common.metrics.Metrics) > > > [2016-06-01 15:12:13,339] DEBUG Added sensor with name select-time: > > > (org.apache.kafka.common.metrics.Metrics) > > > > > > -- > > > Allen Michael Chan > > > > > > > > > -- > Allen Michael Chan >
