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https://issues.apache.org/jira/browse/KAFKA-7130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16532391#comment-16532391
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Karsten Schnitter commented on KAFKA-7130:
------------------------------------------
I saved the faulty segments from the last incident. But they contain sensitive
data, that I cannot share outside my company. I tried to read the last message
of the finished segment from the partition:
{noformat}
$ kafka-console-consumer.sh --bootstrap-server $KAFKA_SERVERS --topic ingestion
--partition 67 --offset 1316626420 --max-messages 1
[2018-07-04 07:33:11,604] WARN [Consumer clientId=consumer-1,
groupId=console-consumer-79022] Unknown error fetching data for topic-partition
ingestion-67 (org.apache.kafka.clients.consumer.internals.Fetcher)
...
^C[2018-07-04 07:33:11,606] WARN [Consumer clientId=consumer-1,
groupId=console-consumer-79022] Unknown error fetching data for topic-partition
ingestion-67 (org.apache.kafka.clients.consumer.internals.Fetcher)
[2018-07-04 07:33:11,612] WARN [Consumer clientId=consumer-1,
groupId=console-consumer-79022] Unknown error fetching data for topic-partition
ingestion-67 (org.apache.kafka.clients.consumer.internals.Fetcher)
Processed a total of 0 messages
{noformat}
The error message is repeated until I stop the command. It is the same for
other messages in the segment. Consuming the first message of the new segment
works fine:
{noformat}
$ kafka-console-consumer.sh --bootstrap-server $KAFKA_SERVERS --topic ingestion
--partition 67 --offset 1316626421 --max-messages 1
<message content>
Processed a total of 1 messages
{noformat}
> EOFException after rolling log segment
> --------------------------------------
>
> Key: KAFKA-7130
> URL: https://issues.apache.org/jira/browse/KAFKA-7130
> Project: Kafka
> Issue Type: Bug
> Components: replication
> Affects Versions: 1.1.0
> Reporter: Karsten Schnitter
> Priority: Major
>
> When rolling a log segment one of our Kafka cluster got an immediate read
> error on the same partition. This lead to a flood of log messages containing
> the corresponding stacktraces. Data was still appended to the partition but
> consumers were unable to read from that partition. Reason for the exception
> is unclear.
> {noformat}
> [2018-07-02 23:53:32,732] INFO [Log partition=ingestion-3,
> dir=/var/vcap/store/kafka] Rolled new log segment at offset 971865991 in 1
> ms. (kafka.log.Log)
> [2018-07-02 23:53:32,739] INFO [ProducerStateManager partition=ingestion-3]
> Writing producer snapshot at offset 971865991 (kafka.log.ProducerStateManager)
> [2018-07-02 23:53:32,739] INFO [Log partition=ingestion-3,
> dir=/var/vcap/store/kafka] Rolled new log segment at offset 971865991 in 1
> ms. (kafka.log.Log)
> [2018-07-02 23:53:32,750] ERROR [ReplicaManager broker=1] Error processing
> fetch operation on partition ingestion-3, offset 971865977
> (kafka.server.ReplicaManager)
> Caused by: java.io.EOFException: Failed to read `log header` from file
> channel `sun.nio.ch.FileChannelImpl@2e0e8810`. Expected to read 17 bytes, but
> reached end of file after reading 0 bytes. Started read from position
> 2147483643.
> {noformat}
> We mitigated the issue by stopping the affected node and deleting the
> corresponding directory. Once the partition was recreated for the replica (we
> use replication-factor 2) the other replica experienced the same problem. We
> mitigated likewise.
> To us it is unclear, what caused this issue. Can you help us in finding the
> root cause of this problem?
>
>
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