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https://issues.apache.org/jira/browse/AMQ-5249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14268871#comment-14268871
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Anuj Khandelwal commented on AMQ-5249:
--------------------------------------
Hi,
We are using 5.10 broker.
We saw this error messages.
[20150107 15:01:52.282 EST (ActiveMQ Transport:
tcp:///10.79.26.196:41859@61613)
org.apache.activemq.broker.region.cursors.AbstractStoreCursor#recoverMess
age 103 WARN] -
TopicStorePrefetch(cas_stuff_price_info_to_jsh,new_golden_price_message)
ID:kepler47.com-49402-1420406276070-1:22507:-1:1 - org
.apache.activemq.broker.region.cursors.TopicStorePrefetch@7524aad9:pricing.goldenPriceFeed,batchResetNeeded=false,storeHasMessages=true,size=52586,cacheEn
abled=false,maxBatchSize:200,hasSpace:true - cursor got duplicate:
ID:helium16.nyc-49994-1420473196066-5:6690:1:1:4257, 4
>From the source code of
>org.apache.activemq.broker.region.cursors.AbstractStoreCursor#recoverMess
age it looks like duplicates messages got stored in kahadb for same
destination. The topic for which it happend has a durable subscriber.
I want to understand in what cases kahadb stores duplicate messages ? Is this a
bug?
Thanks,
Anuj
> "cursor got duplicate" error after upgrade
> ------------------------------------------
>
> Key: AMQ-5249
> URL: https://issues.apache.org/jira/browse/AMQ-5249
> Project: ActiveMQ
> Issue Type: Bug
> Affects Versions: 5.9.1, 5.10.0
> Reporter: Rural Hunter
>
> I was using 5.9.0 and meet one problem so I tried to upgrade activemq. I
> tried both 5.9.1 and 5.10.0 and encouterred a same problem. I saw messages
> filled DLQ very quickly. I checked the clients both producer and consumer but
> there was no error. I checked activemq log and found the log is full of these
> warnings:
> 2014-06-27 23:22:09,337 | WARN |
> org.apache.activemq.broker.region.cursors.QueueStorePrefetch@19117501:com.cyyun.webmon.spider.update,batchResetNeeded=false,storeHasMessages=true,size=211,cacheEnabled=true,maxBatchSize:200,hasSpace:true
> - cursor got duplicate: ID:211.com-52399-1400732399425-1:1:235992:1:1, 4 |
> org.apache.activemq.broker.region.cursors.AbstractStoreCursor | ActiveMQ
> Broker[localhost] Scheduler
> 2014-06-27 23:22:09,337 | WARN |
> org.apache.activemq.broker.region.cursors.QueueStorePrefetch@19117501:com.xxxx.update,batchResetNeeded=false,storeHasMessages=true,size=211,cacheEnabled=true,maxBatchSize:200,hasSpace:true
> - cursor got duplicate: ID:nbzjjf22805-34129-1403880308671-1:1:28:1:1, 4 |
> org.apache.activemq.broker.region.cursors.AbstractStoreCursor | ActiveMQ
> Broker[localhost] Scheduler
> 2014-06-27 23:22:09,338 | WARN |
> org.apache.activemq.broker.region.cursors.QueueStorePrefetch@19117501:com.xxxxx.update,batchResetNeeded=false,storeHasMessages=true,size=211,cacheEnabled=true,maxBatchSize:200,hasSpace:true
> - cursor got duplicate: ID:jxncxnj2-48598-1403856107346-1:1:6007:1:1, 4 |
> org.apache.activemq.broker.region.cursors.AbstractStoreCursor | ActiveMQ
> Broker[localhost] Scheduler
> 2014-06-27 23:22:09,338 | WARN |
> org.apache.activemq.broker.region.cursors.QueueStorePrefetch@19117501:com.xxxx.update,batchResetNeeded=false,storeHasMessages=true,size=211,cacheEnabled=true,maxBatchSize:200,hasSpace:true
> - cursor got duplicate: ID:jxnc17-60227-1400730816361-1:1:149072:1:1, 4 |
> org.apache.activemq.broker.region.cursors.AbstractStoreCursor | ActiveMQ
> Broker[localhost] Scheduler
> 2014-06-27 23:22:09,339 | WARN |
> org.apache.activemq.broker.region.cursors.QueueStorePrefetch@19117501:com.xxxx.update,batchResetNeeded=false,storeHasMessages=true,size=211,cacheEnabled=true,maxBatchSize:200,hasSpace:true
> - cursor got duplicate: ID:cyyun-46954-1403800808565-1:1:9765:1:1, 4 |
> org.apache.activemq.broker.region.cursors.AbstractStoreCursor | ActiveMQ
> Broker[localhost] Scheduler
> 2014-06-27 23:22:09,339 | WARN |
> org.apache.activemq.broker.region.cursors.QueueStorePrefetch@19117501:com.xxxx.update,batchResetNeeded=false,storeHasMessages=true,size=211,cacheEnabled=true,maxBatchSize:200,hasSpace:true
> - cursor got duplicate: ID:ubuntu-55495-1403497638437-1:1:53086:1:1, 4 |
> org.apache.activemq.broker.region.cursors.AbstractStoreCursor | ActiveMQ
> Broker[localhost] Scheduler
> 2014-06-27 23:22:09,340 | WARN |
> org.apache.activemq.broker.region.cursors.QueueStorePrefetch@19117501:com.xxxx.update,batchResetNeeded=false,storeHasMessages=true,size=211,cacheEnabled=true,maxBatchSize:200,hasSpace:true
> - cursor got duplicate: ID:cyyun-39030-1403880008363-1:1:70:1:1, 4 |
> org.apache.activemq.broker.region.cursors.AbstractStoreCursor | ActiveMQ
> Broker[localhost] Scheduler
> The problem mostly happens right after activemq starts and sometimes happened
> after activemq worked normally for a while.
> For now I have to roll back to 5.9.0 and the problem doesn't occure.
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