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https://issues.apache.org/jira/browse/KAFKA-6637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16396711#comment-16396711
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ASF GitHub Bot commented on KAFKA-6637:
---------------------------------------
huxihx opened a new pull request #4698: KAFKA-6637: Avoid divide /zero error
with segment.ms set to zero
URL: https://github.com/apache/kafka/pull/4698
https://issues.apache.org/jira/browse/KAFKA-6637
Changes of this patch include:
1. Avoid divide /zero error with segment.ms set to zero
2. Ignore the effect of setting `log.roll.ms` to zero. Use `log.roll.hours`
instead
*More detailed description of your change,
if necessary. The PR title and PR message become
the squashed commit message, so use a separate
comment to ping reviewers.*
*Summary of testing strategy (including rationale)
for the feature or bug fix. Unit and/or integration
tests are expected for any behaviour change and
system tests should be considered for larger changes.*
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
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> if set topic config segment.ms=0 Kafka broker won't be able to start
> --------------------------------------------------------------------
>
> Key: KAFKA-6637
> URL: https://issues.apache.org/jira/browse/KAFKA-6637
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 1.0.0
> Reporter: Chong Wang
> Assignee: huxihx
> Priority: Major
>
> If set topic config segment.ms to 0, Kafka server won't be able to start
> because of a FATAL error:
> [2018-03-12 19:05:40,196] FATAL [KafkaServer id=2] Fatal error during
> KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
> java.lang.ArithmeticException: / by zero at
> kafka.log.LogConfig.randomSegmentJitter(LogConfig.scala:100) at
> kafka.log.Log.loadSegments(Log.scala:419) at
> kafka.log.Log.<init>(Log.scala:203) at kafka.log.Log$.apply(Log.scala:1734)
> at kafka.log.LogManager.kafka$log$LogManager$$loadLog(LogManager.scala:221)
> at
> kafka.log.LogManager$$anonfun$loadLogs$2$$anonfun$8$$anonfun$apply$16$$anonfun$apply$2.apply$mcV$sp(LogManager.scala:292)
> at kafka.utils.CoreUtils$$anon$1.run(CoreUtils.scala:61) at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at
> java.util.concurrent.FutureTask.run(FutureTask.java:266) at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> [https://github.com/apache/kafka/blob/1.0/core/src/main/scala/kafka/log/LogConfig.scala#L100]
> So the minimum value shouldn't be 0
> https://kafka.apache.org/documentation/#topicconfigs
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