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https://issues.apache.org/jira/browse/KAFKA-6933?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ismael Juma resolved KAFKA-6933.
--------------------------------
    Resolution: Not A Bug

> Broker reports Corrupted index warnings apparently infinitely
> -------------------------------------------------------------
>
>                 Key: KAFKA-6933
>                 URL: https://issues.apache.org/jira/browse/KAFKA-6933
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 1.0.1
>            Reporter: Franco Bonazza
>            Priority: Major
>
> I'm running into a situation where the server logs show continuously the 
> following snippet:
> {noformat}
> [2018-05-23 10:58:56,590] INFO Loading producer state from offset 20601420 
> for partition transaction_r10_updates-6 with message format version 2 
> (kafka.log.Log)
> [2018-05-23 10:58:56,592] INFO Loading producer state from snapshot file 
> '/data/0/kafka-logs/transaction_r10_updates-6/00000000000020601420.snapshot' 
> for partition transaction_r10_u
> pdates-6 (kafka.log.ProducerStateManager)
> [2018-05-23 10:58:56,593] INFO Completed load of log 
> transaction_r10_updates-6 with 74 log segments, log start offset 0 and log 
> end offset 20601420 in 5823 ms (kafka.log.Log)
> [2018-05-23 10:58:58,761] WARN Found a corrupted index file due to 
> requirement failed: Corrupt index found, index file 
> (/data/0/kafka-logs/transaction_r10_updates-15/00000000000020544956.index) 
> has non-zero size but the last offset is 20544956 which is no larger than the 
> base offset 20544956.}. deleting 
> /data/0/kafka-logs/transaction_r10_updates-15/00000000000020544956.timeindex, 
> /data/0/kafka-logs/transaction_r10_updates-15/00000000000020544956.index, and 
> /data/0/kafka-logs/transaction_r10_updates-15/00000000000020544956.txnindex 
> and rebuilding index... (kafka.log.Log)
> [2018-05-23 10:58:58,763] INFO Loading producer state from snapshot file 
> '/data/0/kafka-logs/transaction_r10_updates-15/00000000000020544956.snapshot' 
> for partition transaction_r10_updates-15 (kafka.log.ProducerStateManager)
> [2018-05-23 10:59:02,202] INFO Recovering unflushed segment 20544956 in log 
> transaction_r10_updates-15. (kafka.log.Log){noformat}
> The set up is the following,
> Broker is 1.0.1
> There are mirrors from another cluster using client 0.10.2.1 
> There are kafka streams and other custom consumer / producers using 1.0.0 
> client.
>  
> While is doing this the JVM of the broker is up but it doesn't respond so 
> it's impossible to produce, consume or run any commands.
> If I delete all the index files the WARN turns into an ERROR, which takes a 
> long time (1 day last time I tried) but eventually it goes into a healthy 
> state, then I start the producers and things are still healthy, but when I 
> start the consumers it quickly goes into the original WARN loop, which seems 
> infinite.
>  
> I couldn't find any references to the problem, it seems to be at least 
> missreporting the issue, and perhaps it's not infinite? I let it loop over 
> the WARN for over a day and it never moved past that, and if there was 
> something really wrong with the state maybe it should be reported.
> The log cleaner log showed a few "too many files open" when it originally 
> happened but ulimit has always been set to unlimited so I'm not sure what 
> that error means.



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