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Jun Rao commented on KAFKA-5413: -------------------------------- [~Kelvinrutt], yes, that seems to be the issue. segs.head.index.lastOffset doesn't give the precise last offset in the segment, especially in the case where the index is empty. The issue seems to be there even in 0.9.0. About the fix. LogSegment.nextOffset() gives the offset that we want, but can be expensive. Perhaps we could use the next segment's base offset instead. [~Kelvinrutt], do you think you could patch it? Until this is fixed, not sure if there is an easy way to get around the issue. > Log cleaner fails due to large offset in segment file > ----------------------------------------------------- > > Key: KAFKA-5413 > URL: https://issues.apache.org/jira/browse/KAFKA-5413 > Project: Kafka > Issue Type: Bug > Components: core > Affects Versions: 0.10.2.0, 0.10.2.1 > Environment: Ubuntu 14.04 LTS, Oracle Java 8u92, kafka_2.11-0.10.2.0 > Reporter: Nicholas Ngorok > Labels: reliability > Attachments: 00000000000000000000.index.cleaned, > 00000000000000000000.log, 00000000000000000000.log.cleaned, > 00000000000000000000.timeindex.cleaned, 00000000002147422683.log > > > The log cleaner thread in our brokers is failing with the trace below > {noformat} > [2017-06-08 15:49:54,822] INFO {kafka-log-cleaner-thread-0} Cleaner 0: > Cleaning segment 0 in log __consumer_offsets-12 (largest timestamp Thu Jun 08 > 15:48:59 PDT 2017) into 0, retaining deletes. (kafka.log.LogCleaner) > [2017-06-08 15:49:54,822] INFO {kafka-log-cleaner-thread-0} Cleaner 0: > Cleaning segment 2147343575 in log __consumer_offsets-12 (largest timestamp > Thu Jun 08 15:49:06 PDT 2017) into 0, retaining deletes. > (kafka.log.LogCleaner) > [2017-06-08 15:49:54,834] ERROR {kafka-log-cleaner-thread-0} > [kafka-log-cleaner-thread-0], Error due to (kafka.log.LogCleaner) > java.lang.IllegalArgumentException: requirement failed: largest offset in > message set can not be safely converted to relative offset. > at scala.Predef$.require(Predef.scala:224) > at kafka.log.LogSegment.append(LogSegment.scala:109) > at kafka.log.Cleaner.cleanInto(LogCleaner.scala:478) > at > kafka.log.Cleaner$$anonfun$cleanSegments$1.apply(LogCleaner.scala:405) > at > kafka.log.Cleaner$$anonfun$cleanSegments$1.apply(LogCleaner.scala:401) > at scala.collection.immutable.List.foreach(List.scala:381) > at kafka.log.Cleaner.cleanSegments(LogCleaner.scala:401) > at kafka.log.Cleaner$$anonfun$clean$4.apply(LogCleaner.scala:363) > at kafka.log.Cleaner$$anonfun$clean$4.apply(LogCleaner.scala:362) > at scala.collection.immutable.List.foreach(List.scala:381) > at kafka.log.Cleaner.clean(LogCleaner.scala:362) > at > kafka.log.LogCleaner$CleanerThread.cleanOrSleep(LogCleaner.scala:241) > at kafka.log.LogCleaner$CleanerThread.doWork(LogCleaner.scala:220) > at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:63) > [2017-06-08 15:49:54,835] INFO {kafka-log-cleaner-thread-0} > [kafka-log-cleaner-thread-0], Stopped (kafka.log.LogCleaner) > {noformat} > This seems to point at the specific line [here| > https://github.com/apache/kafka/blob/0.11.0/core/src/main/scala/kafka/log/LogSegment.scala#L92] > in the kafka src where the difference is actually larger than MAXINT as both > baseOffset and offset are of type long. It was introduced in this [pr| > https://github.com/apache/kafka/pull/2210/files/56d1f8196b77a47b176b7bbd1e4220a3be827631] > These were the outputs of dumping the first two log segments > {noformat} > :~$ /usr/bin/kafka-run-class kafka.tools.DumpLogSegments --deep-iteration > --files /kafka-logs/__consumer_offsets-12/000 > 00000000000000000.log > Dumping /kafka-logs/__consumer_offsets-12/00000000000000000000.log > Starting offset: 0 > offset: 1810054758 position: 0 NoTimestampType: -1 isvalid: true payloadsize: > -1 magic: 0 compresscodec: NONE crc: 3127861909 keysize: 34 > :~$ /usr/bin/kafka-run-class kafka.tools.DumpLogSegments --deep-iteration > --files /kafka-logs/__consumer_offsets-12/000 > 00000002147343575.log > Dumping /kafka-logs/__consumer_offsets-12/00000000002147343575.log > Starting offset: 2147343575 > offset: 2147539884 position: 0 NoTimestampType: -1 isvalid: true paylo > adsize: -1 magic: 0 compresscodec: NONE crc: 2282192097 keysize: 34 > {noformat} > My guess is that since 2147539884 is larger than MAXINT, we are hitting this > exception. Was there a specific reason, this check was added in 0.10.2? > E.g. if the first offset is a key = "key 0" and then we have MAXINT + 1 of > "key 1" following, wouldn't we run into this situation whenever the log > cleaner runs? -- This message was sent by Atlassian JIRA (v6.4.14#64029)