Kafka compaction on a topic stopped











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I have multiple Kafka topics on which compaction is enabled. On all the topics compaction is happening fine but on one topic I am facing below issue.



The compaction happened until a point of time, after that it never happened. When I went through log cleaner logs there weren't any exceptions or logs telling me the potential reason why compaction stopped.



I am wondering what could be the reason for this behavior. How do i force my compaction to happen?
Any sort of advice would be helpful.










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  • How do you know compaction has stopped?
    – Mickael Maison
    Nov 21 at 21:10










  • My disk size is growing more than it should, and from the logs I could see compaction is not happening.
    – user304611
    Nov 21 at 21:13















up vote
0
down vote

favorite












I have multiple Kafka topics on which compaction is enabled. On all the topics compaction is happening fine but on one topic I am facing below issue.



The compaction happened until a point of time, after that it never happened. When I went through log cleaner logs there weren't any exceptions or logs telling me the potential reason why compaction stopped.



I am wondering what could be the reason for this behavior. How do i force my compaction to happen?
Any sort of advice would be helpful.










share|improve this question
























  • How do you know compaction has stopped?
    – Mickael Maison
    Nov 21 at 21:10










  • My disk size is growing more than it should, and from the logs I could see compaction is not happening.
    – user304611
    Nov 21 at 21:13













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I have multiple Kafka topics on which compaction is enabled. On all the topics compaction is happening fine but on one topic I am facing below issue.



The compaction happened until a point of time, after that it never happened. When I went through log cleaner logs there weren't any exceptions or logs telling me the potential reason why compaction stopped.



I am wondering what could be the reason for this behavior. How do i force my compaction to happen?
Any sort of advice would be helpful.










share|improve this question















I have multiple Kafka topics on which compaction is enabled. On all the topics compaction is happening fine but on one topic I am facing below issue.



The compaction happened until a point of time, after that it never happened. When I went through log cleaner logs there weren't any exceptions or logs telling me the potential reason why compaction stopped.



I am wondering what could be the reason for this behavior. How do i force my compaction to happen?
Any sort of advice would be helpful.







apache-kafka






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share|improve this question













share|improve this question




share|improve this question








edited Nov 21 at 21:23









Mickael Maison

6,56732428




6,56732428










asked Nov 21 at 21:07









user304611

368




368












  • How do you know compaction has stopped?
    – Mickael Maison
    Nov 21 at 21:10










  • My disk size is growing more than it should, and from the logs I could see compaction is not happening.
    – user304611
    Nov 21 at 21:13


















  • How do you know compaction has stopped?
    – Mickael Maison
    Nov 21 at 21:10










  • My disk size is growing more than it should, and from the logs I could see compaction is not happening.
    – user304611
    Nov 21 at 21:13
















How do you know compaction has stopped?
– Mickael Maison
Nov 21 at 21:10




How do you know compaction has stopped?
– Mickael Maison
Nov 21 at 21:10












My disk size is growing more than it should, and from the logs I could see compaction is not happening.
– user304611
Nov 21 at 21:13




My disk size is growing more than it should, and from the logs I could see compaction is not happening.
– user304611
Nov 21 at 21:13












1 Answer
1






active

oldest

votes

















up vote
0
down vote













This usually happen because the compacting thread (log cleaner) crashed. Next step in troubleshooting is to find the reason it crashed and fix it. I'd search the main server logs for exceptions.



Log cleaner became a lot more stable over time, so if you are running versions older than 2.0, I recommend upgrading.






share|improve this answer





















  • I am running version above 2, i have gone through all the server logs, nothing regarding any exceptions is found. Are the log cleaner threads separate for every topic? Could i force compact somehow?
    – user304611
    Nov 22 at 3:33












  • All the new index, timestamp index files are getting created for new segments, but the process after that compaction is not happening.
    – user304611
    Nov 22 at 4:12










  • @user306 log-cleaner.log is separate from server.log, yes... But what do you mean "version above 2"? That's the current, and highest version of Kafka
    – cricket_007
    Nov 22 at 20:23











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

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active

oldest

votes








up vote
0
down vote













This usually happen because the compacting thread (log cleaner) crashed. Next step in troubleshooting is to find the reason it crashed and fix it. I'd search the main server logs for exceptions.



Log cleaner became a lot more stable over time, so if you are running versions older than 2.0, I recommend upgrading.






share|improve this answer





















  • I am running version above 2, i have gone through all the server logs, nothing regarding any exceptions is found. Are the log cleaner threads separate for every topic? Could i force compact somehow?
    – user304611
    Nov 22 at 3:33












  • All the new index, timestamp index files are getting created for new segments, but the process after that compaction is not happening.
    – user304611
    Nov 22 at 4:12










  • @user306 log-cleaner.log is separate from server.log, yes... But what do you mean "version above 2"? That's the current, and highest version of Kafka
    – cricket_007
    Nov 22 at 20:23















up vote
0
down vote













This usually happen because the compacting thread (log cleaner) crashed. Next step in troubleshooting is to find the reason it crashed and fix it. I'd search the main server logs for exceptions.



Log cleaner became a lot more stable over time, so if you are running versions older than 2.0, I recommend upgrading.






share|improve this answer





















  • I am running version above 2, i have gone through all the server logs, nothing regarding any exceptions is found. Are the log cleaner threads separate for every topic? Could i force compact somehow?
    – user304611
    Nov 22 at 3:33












  • All the new index, timestamp index files are getting created for new segments, but the process after that compaction is not happening.
    – user304611
    Nov 22 at 4:12










  • @user306 log-cleaner.log is separate from server.log, yes... But what do you mean "version above 2"? That's the current, and highest version of Kafka
    – cricket_007
    Nov 22 at 20:23













up vote
0
down vote










up vote
0
down vote









This usually happen because the compacting thread (log cleaner) crashed. Next step in troubleshooting is to find the reason it crashed and fix it. I'd search the main server logs for exceptions.



Log cleaner became a lot more stable over time, so if you are running versions older than 2.0, I recommend upgrading.






share|improve this answer












This usually happen because the compacting thread (log cleaner) crashed. Next step in troubleshooting is to find the reason it crashed and fix it. I'd search the main server logs for exceptions.



Log cleaner became a lot more stable over time, so if you are running versions older than 2.0, I recommend upgrading.







share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 21 at 21:21









Gwen Shapira

2,3741318




2,3741318












  • I am running version above 2, i have gone through all the server logs, nothing regarding any exceptions is found. Are the log cleaner threads separate for every topic? Could i force compact somehow?
    – user304611
    Nov 22 at 3:33












  • All the new index, timestamp index files are getting created for new segments, but the process after that compaction is not happening.
    – user304611
    Nov 22 at 4:12










  • @user306 log-cleaner.log is separate from server.log, yes... But what do you mean "version above 2"? That's the current, and highest version of Kafka
    – cricket_007
    Nov 22 at 20:23


















  • I am running version above 2, i have gone through all the server logs, nothing regarding any exceptions is found. Are the log cleaner threads separate for every topic? Could i force compact somehow?
    – user304611
    Nov 22 at 3:33












  • All the new index, timestamp index files are getting created for new segments, but the process after that compaction is not happening.
    – user304611
    Nov 22 at 4:12










  • @user306 log-cleaner.log is separate from server.log, yes... But what do you mean "version above 2"? That's the current, and highest version of Kafka
    – cricket_007
    Nov 22 at 20:23
















I am running version above 2, i have gone through all the server logs, nothing regarding any exceptions is found. Are the log cleaner threads separate for every topic? Could i force compact somehow?
– user304611
Nov 22 at 3:33






I am running version above 2, i have gone through all the server logs, nothing regarding any exceptions is found. Are the log cleaner threads separate for every topic? Could i force compact somehow?
– user304611
Nov 22 at 3:33














All the new index, timestamp index files are getting created for new segments, but the process after that compaction is not happening.
– user304611
Nov 22 at 4:12




All the new index, timestamp index files are getting created for new segments, but the process after that compaction is not happening.
– user304611
Nov 22 at 4:12












@user306 log-cleaner.log is separate from server.log, yes... But what do you mean "version above 2"? That's the current, and highest version of Kafka
– cricket_007
Nov 22 at 20:23




@user306 log-cleaner.log is separate from server.log, yes... But what do you mean "version above 2"? That's the current, and highest version of Kafka
– cricket_007
Nov 22 at 20:23


















 

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