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Mario Giammarco commented on KAFKA-1194: ---------------------------------------- Hello, we would like to use kakfa in a big project for our customer but infortunately in some deployments with need to put a local kafka on windows and this bug is a showstopper for us. We can try to help you in testing. Thanks, Mario > The kafka broker cannot delete the old log files after the configured time > -------------------------------------------------------------------------- > > Key: KAFKA-1194 > URL: https://issues.apache.org/jira/browse/KAFKA-1194 > Project: Kafka > Issue Type: Bug > Components: log > Affects Versions: 0.10.0.0, 0.11.0.0, 1.0.0 > Environment: window > Reporter: Tao Qin > Priority: Critical > Labels: features, patch, windows > Attachments: KAFKA-1194.patch, RetentionExpiredWindows.txt, > Untitled.jpg, image-2018-09-12-14-25-52-632.png, kafka-1194-v1.patch, > kafka-1194-v2.patch, kafka-bombarder.7z, screenshot-1.png > > Original Estimate: 72h > Remaining Estimate: 72h > > We tested it in windows environment, and set the log.retention.hours to 24 > hours. > # The minimum age of a log file to be eligible for deletion > log.retention.hours=24 > After several days, the kafka broker still cannot delete the old log file. > And we get the following exceptions: > [2013-12-19 01:57:38,528] ERROR Uncaught exception in scheduled task > 'kafka-log-retention' (kafka.utils.KafkaScheduler) > kafka.common.KafkaStorageException: Failed to change the log file suffix from > to .deleted for log segment 1516723 > at kafka.log.LogSegment.changeFileSuffixes(LogSegment.scala:249) > at kafka.log.Log.kafka$log$Log$$asyncDeleteSegment(Log.scala:638) > at kafka.log.Log.kafka$log$Log$$deleteSegment(Log.scala:629) > at kafka.log.Log$$anonfun$deleteOldSegments$1.apply(Log.scala:418) > at kafka.log.Log$$anonfun$deleteOldSegments$1.apply(Log.scala:418) > at > scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:59) > at scala.collection.immutable.List.foreach(List.scala:76) > at kafka.log.Log.deleteOldSegments(Log.scala:418) > at > kafka.log.LogManager.kafka$log$LogManager$$cleanupExpiredSegments(LogManager.scala:284) > at > kafka.log.LogManager$$anonfun$cleanupLogs$3.apply(LogManager.scala:316) > at > kafka.log.LogManager$$anonfun$cleanupLogs$3.apply(LogManager.scala:314) > at > scala.collection.TraversableLike$WithFilter$$anonfun$foreach$1.apply(TraversableLike.scala:743) > at scala.collection.Iterator$class.foreach(Iterator.scala:772) > at > scala.collection.JavaConversions$JIteratorWrapper.foreach(JavaConversions.scala:573) > at scala.collection.IterableLike$class.foreach(IterableLike.scala:73) > at > scala.collection.JavaConversions$JListWrapper.foreach(JavaConversions.scala:615) > at > scala.collection.TraversableLike$WithFilter.foreach(TraversableLike.scala:742) > at kafka.log.LogManager.cleanupLogs(LogManager.scala:314) > at > kafka.log.LogManager$$anonfun$startup$1.apply$mcV$sp(LogManager.scala:143) > at kafka.utils.KafkaScheduler$$anon$1.run(KafkaScheduler.scala:100) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304) > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178) > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > at java.lang.Thread.run(Thread.java:724) > I think this error happens because kafka tries to rename the log file when it > is still opened. So we should close the file first before rename. > The index file uses a special data structure, the MappedByteBuffer. Javadoc > describes it as: > A mapped byte buffer and the file mapping that it represents remain valid > until the buffer itself is garbage-collected. > Fortunately, I find a forceUnmap function in kafka code, and perhaps it can > be used to free the MappedByteBuffer. -- This message was sent by Atlassian JIRA (v7.6.3#76005)