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https://issues.apache.org/jira/browse/KAFKA-6637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16396622#comment-16396622
]
ASF GitHub Bot commented on KAFKA-6637:
---------------------------------------
huxihx closed pull request #4697: KAFKA-6637: Avoid divide by zero exception
when segment.ms is set to 0
URL: https://github.com/apache/kafka/pull/4697
This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:
As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):
diff --git a/core/src/main/scala/kafka/log/LogConfig.scala
b/core/src/main/scala/kafka/log/LogConfig.scala
index 30ca333dd28..2a941bc4196 100755
--- a/core/src/main/scala/kafka/log/LogConfig.scala
+++ b/core/src/main/scala/kafka/log/LogConfig.scala
@@ -98,7 +98,7 @@ case class LogConfig(props: java.util.Map[_, _],
overriddenConfigs: Set[String]
val FollowerReplicationThrottledReplicas =
getList(LogConfig.FollowerReplicationThrottledReplicasProp)
def randomSegmentJitter: Long =
- if (segmentJitterMs == 0) 0 else Utils.abs(scala.util.Random.nextInt()) %
math.min(segmentJitterMs, segmentMs)
+ if (segmentJitterMs == 0 || segmentMs == 0) 0 else
Utils.abs(scala.util.Random.nextInt()) % math.min(segmentJitterMs, segmentMs)
}
object LogConfig {
diff --git a/core/src/main/scala/kafka/server/KafkaConfig.scala
b/core/src/main/scala/kafka/server/KafkaConfig.scala
index cf22305caf7..e35d188e943 100755
--- a/core/src/main/scala/kafka/server/KafkaConfig.scala
+++ b/core/src/main/scala/kafka/server/KafkaConfig.scala
@@ -1088,7 +1088,10 @@ class KafkaConfig(val props: java.util.Map[_, _], doLog:
Boolean, dynamicConfigO
def logIndexSizeMaxBytes = getInt(KafkaConfig.LogIndexSizeMaxBytesProp)
def logIndexIntervalBytes = getInt(KafkaConfig.LogIndexIntervalBytesProp)
def logDeleteDelayMs = getLong(KafkaConfig.LogDeleteDelayMsProp)
- def logRollTimeMillis: java.lang.Long =
Option(getLong(KafkaConfig.LogRollTimeMillisProp)).getOrElse(60 * 60 * 1000L *
getInt(KafkaConfig.LogRollTimeHoursProp))
+ def logRollTimeMillis: java.lang.Long =
Option(getLong(KafkaConfig.LogRollTimeMillisProp)) match {
+ case Some(rollMs) if rollMs > 0 => rollMs
+ case _ => 60 * 60 * 1000L * getInt(KafkaConfig.LogRollTimeHoursProp)
+ }
def logRollTimeJitterMillis: java.lang.Long =
Option(getLong(KafkaConfig.LogRollTimeJitterMillisProp)).getOrElse(60 * 60 *
1000L * getInt(KafkaConfig.LogRollTimeJitterHoursProp))
def logFlushIntervalMs: java.lang.Long =
Option(getLong(KafkaConfig.LogFlushIntervalMsProp)).getOrElse(getLong(KafkaConfig.LogFlushSchedulerIntervalMsProp))
def minInSyncReplicas = getInt(KafkaConfig.MinInSyncReplicasProp)
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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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