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PC commented on KAFKA-2078: --------------------------- Here is an update on appears to cause this problem: Pumping 4 messages, 1 from each of the 4 producers: 11:16:26.333 [kafka-producer-network-thread | producer-1] DEBUG producer - PumpSuccess topic[test] partition[0] offset[582177743] 11:16:26.333 [kafka-producer-network-thread | producer-3] DEBUG producer - PumpSuccess topic[test] partition[0] offset[582177741] 11:16:26.333 [kafka-producer-network-thread | producer-2] DEBUG producer - PumpSuccess topic[test] partition[0] offset[582177744] 11:16:26.333 [kafka-producer-network-thread | producer-4] DEBUG producer - PumpSuccess topic[test] partition[0] offset[582177742] 11:21:26.243 [kafka-producer-network-thread | producer-3] DEBUG o.apache.kafka.clients.NetworkClient - Trying to send metadata request to node 0 11:21:26.243 [kafka-producer-network-thread | producer-4] DEBUG o.apache.kafka.clients.NetworkClient - Trying to send metadata request to node 0 11:21:26.243 [kafka-producer-network-thread | producer-1] DEBUG o.apache.kafka.clients.NetworkClient - Trying to send metadata request to node 0 11:21:26.243 [kafka-producer-network-thread | producer-2] DEBUG o.apache.kafka.clients.NetworkClient - Trying to send metadata request to node 0 11:21:26.243 [kafka-producer-network-thread | producer-3] DEBUG o.apache.kafka.clients.NetworkClient - Sending metadata request ClientRequest(expectResponse=true, payload=null, request=RequestSend(header={api_key=3,api_version=0,correlation_id=2,client_id=producer-3}, body={topics=[test]})) to node 0 11:21:26.243 [kafka-producer-network-thread | producer-4] DEBUG o.apache.kafka.clients.NetworkClient - Sending metadata request ClientRequest(expectResponse=true, payload=null, request=RequestSend(header={api_key=3,api_version=0,correlation_id=2,client_id=producer-4}, body={topics=[test]})) to node 0 11:21:26.244 [kafka-producer-network-thread | producer-2] DEBUG o.apache.kafka.clients.NetworkClient - Sending metadata request ClientRequest(expectResponse=true, payload=null, request=RequestSend(header={api_key=3,api_version=0,correlation_id=2,client_id=producer-2}, body={topics=[test]})) to node 0 11:21:26.244 [kafka-producer-network-thread | producer-1] DEBUG o.apache.kafka.clients.NetworkClient - Sending metadata request ClientRequest(expectResponse=true, payload=null, request=RequestSend(header={api_key=3,api_version=0,correlation_id=2,client_id=producer-1}, body={topics=[test]})) to node 0 11:21:26.245 [kafka-producer-network-thread | producer-2] DEBUG o.a.k.c.producer.internals.Metadata - Updated cluster metadata version 3 to Cluster(nodes = [Node(0, localhost, 9092)], partitions = [Partition(topic = test, partition = 0, leader = 0, replicas = [0,], isr = [0,]]) 11:21:26.245 [kafka-producer-network-thread | producer-3] DEBUG o.a.k.c.producer.internals.Metadata - Updated cluster metadata version 3 to Cluster(nodes = [Node(0, localhost, 9092)], partitions = [Partition(topic = test, partition = 0, leader = 0, replicas = [0,], isr = [0,]]) 11:21:26.245 [kafka-producer-network-thread | producer-1] DEBUG o.a.k.c.producer.internals.Metadata - Updated cluster metadata version 3 to Cluster(nodes = [Node(0, localhost, 9092)], partitions = [Partition(topic = test, partition = 0, leader = 0, replicas = [0,], isr = [0,]]) 11:21:26.245 [kafka-producer-network-thread | producer-4] DEBUG o.a.k.c.producer.internals.Metadata - Updated cluster metadata version 3 to Cluster(nodes = [Node(0, localhost, 9092)], partitions = [Partition(topic = test, partition = 0, leader = 0, replicas = [0,], isr = [0,]]) 11:21:26.243 [kafka-producer-network-thread | producer-3] DEBUG o.apache.kafka.clients.NetworkClient - Trying to send metadata request to node 0 11:21:26.243 [kafka-producer-network-thread | producer-4] DEBUG o.apache.kafka.clients.NetworkClient - Trying to send metadata request to node 0 11:21:26.243 [kafka-producer-network-thread | producer-1] DEBUG o.apache.kafka.clients.NetworkClient - Trying to send metadata request to node 0 11:21:26.243 [kafka-producer-network-thread | producer-2] DEBUG o.apache.kafka.clients.NetworkClient - Trying to send metadata request to node 0 11:21:26.243 [kafka-producer-network-thread | producer-3] DEBUG o.apache.kafka.clients.NetworkClient - Sending metadata request ClientRequest(expectResponse=true, payload=null, request=RequestSend(header={api_key=3,api_version=0,correlation_id=2,client_id=producer-3}, body={topics=[test]})) to node 0 11:21:26.243 [kafka-producer-network-thread | producer-4] DEBUG o.apache.kafka.clients.NetworkClient - Sending metadata request ClientRequest(expectResponse=true, payload=null, request=RequestSend(header={api_key=3,api_version=0,correlation_id=2,client_id=producer-4}, body={topics=[test]})) to node 0 11:21:26.244 [kafka-producer-network-thread | producer-2] DEBUG o.apache.kafka.clients.NetworkClient - Sending metadata request ClientRequest(expectResponse=true, payload=null, request=RequestSend(header={api_key=3,api_version=0,correlation_id=2,client_id=producer-2}, body={topics=[test]})) to node 0 11:21:26.244 [kafka-producer-network-thread | producer-1] DEBUG o.apache.kafka.clients.NetworkClient - Sending metadata request ClientRequest(expectResponse=true, payload=null, request=RequestSend(header={api_key=3,api_version=0,correlation_id=2,client_id=producer-1}, body={topics=[test]})) to node 0 11:21:26.245 [kafka-producer-network-thread | producer-2] DEBUG o.a.k.c.producer.internals.Metadata - Updated cluster metadata version 3 to Cluster(nodes = [Node(0, localhost, 9092)], partitions = [Partition(topic = test, partition = 0, leader = 0, replicas = [0,], isr = [0,]]) 11:21:26.245 [kafka-producer-network-thread | producer-3] DEBUG o.a.k.c.producer.internals.Metadata - Updated cluster metadata version 3 to Cluster(nodes = [Node(0, localhost, 9092)], partitions = [Partition(topic = test, partition = 0, leader = 0, replicas = [0,], isr = [0,]]) 11:21:26.245 [kafka-producer-network-thread | producer-1] DEBUG o.a.k.c.producer.internals.Metadata - Updated cluster metadata version 3 to Cluster(nodes = [Node(0, localhost, 9092)], partitions = [Partition(topic = test, partition = 0, leader = 0, replicas = [0,], isr = [0,]]) 11:21:26.245 [kafka-producer-network-thread | producer-4] DEBUG o.a.k.c.producer.internals.Metadata - Updated cluster metadata version 3 to Cluster(nodes = [Node(0, localhost, 9092)], partitions = [Partition(topic = test, partition = 0, leader = 0, replicas = [0,], isr = [0,]]) 11:26:26.245 [kafka-producer-network-thread | producer-4] DEBUG o.apache.kafka.clients.NetworkClient - Trying to send metadata request to node 0 11:26:26.245 [kafka-producer-network-thread | producer-1] DEBUG o.apache.kafka.clients.NetworkClient - Trying to send metadata request to node 0 11:26:26.245 [kafka-producer-network-thread | producer-2] DEBUG o.apache.kafka.clients.NetworkClient - Trying to send metadata request to node 0 11:26:26.245 [kafka-producer-network-thread | producer-3] DEBUG o.apache.kafka.clients.NetworkClient - Trying to send metadata request to node 0 11:26:26.246 [kafka-producer-network-thread | producer-4] DEBUG o.apache.kafka.clients.NetworkClient - Sending metadata request ClientRequest(expectResponse=true, payload=null, request=RequestSend(header={api_key=3,api_version=0,correlation_id=3,client_id=producer-4}, body={topics=[test]})) to node 0 11:26:26.246 [kafka-producer-network-thread | producer-1] DEBUG o.apache.kafka.clients.NetworkClient - Sending metadata request ClientRequest(expectResponse=true, payload=null, request=RequestSend(header={api_key=3,api_version=0,correlation_id=3,client_id=producer-1}, body={topics=[test]})) to node 0 11:26:26.246 [kafka-producer-network-thread | producer-2] DEBUG o.apache.kafka.clients.NetworkClient - Sending metadata request ClientRequest(expectResponse=true, payload=null, request=RequestSend(header={api_key=3,api_version=0,correlation_id=3,client_id=producer-2}, body={topics=[test]})) to node 0 11:26:26.246 [kafka-producer-network-thread | producer-3] DEBUG o.apache.kafka.clients.NetworkClient - Sending metadata request ClientRequest(expectResponse=true, payload=null, request=RequestSend(header={api_key=3,api_version=0,correlation_id=3,client_id=producer-3}, body={topics=[test]})) to node 0 11:26:26.252 [kafka-producer-network-thread | producer-1] WARN o.a.kafka.common.network.Selector - Error in I/O with localhost/127.0.0.1 java.io.EOFException: null at org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:62) ~[kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.common.network.Selector.poll(Selector.java:248) ~[kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:192) [kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:191) [kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:122) [kafka-clients-0.8.2.1.jar:na] at java.lang.Thread.run(Thread.java:745) [na:1.8.0_40] 11:26:26.252 [kafka-producer-network-thread | producer-4] WARN o.a.kafka.common.network.Selector - Error in I/O with localhost/127.0.0.1 java.io.EOFException: null at org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:62) ~[kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.common.network.Selector.poll(Selector.java:248) ~[kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:192) [kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:191) [kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:122) [kafka-clients-0.8.2.1.jar:na] at java.lang.Thread.run(Thread.java:745) [na:1.8.0_40] 11:26:26.252 [kafka-producer-network-thread | producer-2] WARN o.a.kafka.common.network.Selector - Error in I/O with localhost/127.0.0.1 java.io.EOFException: null at org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:62) ~[kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.common.network.Selector.poll(Selector.java:248) ~[kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:192) [kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:191) [kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:122) [kafka-clients-0.8.2.1.jar:na] at java.lang.Thread.run(Thread.java:745) [na:1.8.0_40] 11:26:26.252 [kafka-producer-network-thread | producer-3] WARN o.a.kafka.common.network.Selector - Error in I/O with localhost/127.0.0.1 java.io.EOFException: null at org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:62) ~[kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.common.network.Selector.poll(Selector.java:248) ~[kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:192) [kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:191) [kafka-clients-0.8.2.1.jar:na] at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:122) [kafka-clients-0.8.2.1.jar:na] at java.lang.Thread.run(Thread.java:745) [na:1.8.0_40] 11:26:26.253 [kafka-producer-network-thread | producer-1] DEBUG o.apache.kafka.clients.NetworkClient - Node -1 disconnected. 11:26:26.253 [kafka-producer-network-thread | producer-3] DEBUG o.apache.kafka.clients.NetworkClient - Node -1 disconnected. 11:26:26.253 [kafka-producer-network-thread | producer-2] DEBUG o.apache.kafka.clients.NetworkClient - Node -1 disconnected. 11:26:26.254 [kafka-producer-network-thread | producer-4] DEBUG o.a.k.c.producer.internals.Metadata - Updated cluster metadata version 4 to Cluster(nodes = [Node(0, localhost, 9092)], partitions = [Partition(topic = test, partition = 0, leader = 0, replicas = [0,], isr = [0,]]) 11:26:26.254 [kafka-producer-network-thread | producer-4] DEBUG o.apache.kafka.clients.NetworkClient - Node -1 disconnected. 11:26:26.254 [kafka-producer-network-thread | producer-2] DEBUG o.a.k.c.producer.internals.Metadata - Updated cluster metadata version 4 to Cluster(nodes = [Node(0, localhost, 9092)], partitions = [Partition(topic = test, partition = 0, leader = 0, replicas = [0,], isr = [0,]]) 11:26:26.255 [kafka-producer-network-thread | producer-3] DEBUG o.a.k.c.producer.internals.Metadata - Updated cluster metadata version 4 to Cluster(nodes = [Node(0, localhost, 9092)], partitions = [Partition(topic = test, partition = 0, leader = 0, replicas = [0,], isr = [0,]]) 11:26:26.255 [kafka-producer-network-thread | producer-1] DEBUG o.a.k.c.producer.internals.Metadata - Updated cluster metadata version 4 to Cluster(nodes = [Node(0, localhost, 9092)], partitions = [Partition(topic = test, partition = 0, leader = 0, replicas = [0,], isr = [0,]]) 11:26:26.347 [kafka-producer-network-thread | producer-4] DEBUG o.apache.kafka.clients.NetworkClient - Trying to send metadata request to node 0 11:26:26.348 [kafka-producer-network-thread | producer-4] DEBUG o.apache.kafka.clients.NetworkClient - Sending metadata request ClientRequest(expectResponse=true, payload=null, request=RequestSend(header={api_key=3,api_version=0,correlation_id=4,client_id=producer-4}, body={topics=[test]})) to node 0 11:26:26.349 [kafka-producer-network-thread | producer-4] DEBUG o.a.k.c.producer.internals.Metadata - Updated cluster metadata version 5 to Cluster(nodes = [Node(0, localhost, 9092)], partitions = [Partition(topic = test, partition = 0, leader = 0, replicas = [0,], isr = [0,]]) Perhaps this helps pin-point the real cause of the problem. Please advice. > Getting Selector [WARN] Error in I/O with host java.io.EOFException > ------------------------------------------------------------------- > > Key: KAFKA-2078 > URL: https://issues.apache.org/jira/browse/KAFKA-2078 > Project: Kafka > Issue Type: Bug > Components: producer > Affects Versions: 0.8.2.0 > Environment: OS Version: 2.6.39-400.209.1.el5uek and Hardware: 8 x > Intel(R) Xeon(R) CPU X5660 @ 2.80GHz/44GB > Reporter: Aravind > Assignee: Jun Rao > > When trying to Produce 1000 (10 MB) messages, getting this below error some > where between 997 to 1000th message. There is no pattern but able to > reproduce. > [PDT] 2015-03-31 13:53:50 Selector [WARN] Error in I/O with "our host" > java.io.EOFException at > org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:62) > at org.apache.kafka.common.network.Selector.poll(Selector.java:248) at > org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:192) at > org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:191) at > org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:122) at > java.lang.Thread.run(Thread.java:724) > This error I am getting some times @ 997th message or 999th message. There is > no pattern but able to reproduce. -- This message was sent by Atlassian JIRA (v6.3.4#6332)