Details
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Bug
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Status: Open
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Major
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Resolution: Unresolved
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1.0.1
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None
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None
Description
We encountered a problem in our product env without any foresight. When kafka broker trying to clean __consumer_offsets-38 (and only happents to this partition), the log shows
it failed, and marking the whole disk/log dir offline, and this leads to a negative impact on some normal partitions (because of the ISR list of those partitions decrease).
we had to restart the broker server to reuse the disk/dir which was marked as offline. BUT!! this problem occurs periodically with the same reason so we have to restart broker periodically.
we read some source code of kafka-1.0.1, but cannot make sure why this happends. And The cluster status had been good until this problem suddenly attacked us.
the error log is something like this :
2019-06-25 00:11:26,241 INFO kafka.log.TimeIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000012855596978.timeindex.deleted 2019-06-25 00:11:26,258 ERROR kafka.server.LogDirFailureChannel: Error while deleting segments for __consumer_offsets-38 in dir /data6/kafka/data java.io.IOException: Delete of log 00000000000000000000.log.deleted failed. at kafka.log.LogSegment.delete(LogSegment.scala:496) at kafka.log.Log$$anonfun$kafka$log$Log$$deleteSeg$1$1.apply$mcV$sp(Log.scala:1596) at kafka.log.Log$$anonfun$kafka$log$Log$$deleteSeg$1$1.apply(Log.scala:1596) at kafka.log.Log$$anonfun$kafka$log$Log$$deleteSeg$1$1.apply(Log.scala:1596) at kafka.log.Log.maybeHandleIOException(Log.scala:1669) at kafka.log.Log.kafka$log$Log$$deleteSeg$1(Log.scala:1595) at kafka.log.Log$$anonfun$kafka$log$Log$$asyncDeleteSegment$1.apply$mcV$sp(Log.scala:1599) at kafka.utils.KafkaScheduler$$anonfun$1.apply$mcV$sp(KafkaScheduler.scala:110) at kafka.utils.CoreUtils$$anon$1.run(CoreUtils.scala:61) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) 2019-06-25 00:11:26,265 ERROR kafka.utils.KafkaScheduler: Uncaught exception in scheduled task 'delete-file' org.apache.kafka.common.errors.KafkaStorageException: Error while deleting segments for __consumer_offsets-38 in dir /data6/kafka/data Caused by: java.io.IOException: Delete of log 00000000000000000000.log.deleted failed. at kafka.log.LogSegment.delete(LogSegment.scala:496) at kafka.log.Log$$anonfun$kafka$log$Log$$deleteSeg$1$1.apply$mcV$sp(Log.scala:1596) at kafka.log.Log$$anonfun$kafka$log$Log$$deleteSeg$1$1.apply(Log.scala:1596) at kafka.log.Log$$anonfun$kafka$log$Log$$deleteSeg$1$1.apply(Log.scala:1596) at kafka.log.Log.maybeHandleIOException(Log.scala:1669) at kafka.log.Log.kafka$log$Log$$deleteSeg$1(Log.scala:1595) at kafka.log.Log$$anonfun$kafka$log$Log$$asyncDeleteSegment$1.apply$mcV$sp(Log.scala:1599) at kafka.utils.KafkaScheduler$$anonfun$1.apply$mcV$sp(KafkaScheduler.scala:110) at kafka.utils.CoreUtils$$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.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) 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) 2019-06-25 00:11:26,268 INFO kafka.server.ReplicaManager: [ReplicaManager broker=1001] Stopping serving replicas in dir /data6/kafka/data
and we also find that the cleaning of __consumer_offsets-38 is so frequently that almost 85% of output log is related. something like this :
2019-06-25 20:29:03,222 INFO kafka.log.OffsetIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000008457474982.index.deleted 2019-06-25 20:29:03,222 INFO kafka.log.TimeIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000008457474982.timeindex.deleted 2019-06-25 20:29:03,295 INFO kafka.log.Log: Deleting segment 10514999959 from log __consumer_offsets-38. 2019-06-25 20:29:03,298 INFO kafka.log.OffsetIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000010514999959.index.deleted 2019-06-25 20:29:03,298 INFO kafka.log.TimeIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000010514999959.timeindex.deleted 2019-06-25 20:29:03,380 INFO kafka.log.Log: Deleting segment 11374174390 from log __consumer_offsets-38. 2019-06-25 20:29:03,382 INFO kafka.log.OffsetIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000011374174390.index.deleted 2019-06-25 20:29:03,382 INFO kafka.log.TimeIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000011374174390.timeindex.deleted 2019-06-25 20:29:03,455 INFO kafka.log.Log: Deleting segment 13507582773 from log __consumer_offsets-38. 2019-06-25 20:29:03,461 INFO kafka.log.OffsetIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000013507582773.index.deleted 2019-06-25 20:29:03,461 INFO kafka.log.TimeIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000013507582773.timeindex.deleted 2019-06-25 20:29:03,531 INFO kafka.log.Log: Deleting segment 15655066421 from log __consumer_offsets-38. 2019-06-25 20:29:03,531 INFO kafka.log.OffsetIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000015655066421.index.deleted 2019-06-25 20:29:03,531 INFO kafka.log.TimeIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000015655066421.timeindex.deleted 2019-06-25 20:29:03,606 INFO kafka.log.Log: Deleting segment 17802355567 from log __consumer_offsets-38. 2019-06-25 20:29:03,606 INFO kafka.log.Log: Deleting segment 18177617859 from log __consumer_offsets-38. 2019-06-25 20:29:03,606 INFO kafka.log.OffsetIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000017802355567.index.deleted 2019-06-25 20:29:03,606 INFO kafka.log.TimeIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000017802355567.timeindex.deleted 2019-06-25 20:29:03,606 INFO kafka.log.OffsetIndex: Deleting index /data6/kafka/data/__consumer_offsets-38/00000000018177617859.index.deleted