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https://issues.apache.org/jira/browse/AMQ-4938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13868674#comment-13868674
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Arthur Naseef commented on AMQ-4938:
------------------------------------
Watching the stats using the web console, the stats update as follows:
|| stat || on normal send || on send after get timed out ||
| Dequeue Counter | no change | +1 |
| Message count waiting acknowledge | +1 | no change |
| Dispatched Counter | +1 | +1 |
| Enqueue Counter | +1 | +1 |
So, it appears the consumer is acknowledging the message immediately.
> Queue Messages lost after read timeout on REST API.
> ---------------------------------------------------
>
> Key: AMQ-4938
> URL: https://issues.apache.org/jira/browse/AMQ-4938
> Project: ActiveMQ
> Issue Type: Bug
> Affects Versions: 5.8.0, 5.9.0, 5.10.0
> Environment: Win32, Linux
> Reporter: Peter Eisenlohr
> Priority: Critical
>
> I have been trying to send/receive messages via a Queue using the [REST
> API|http://activemq.apache.org/rest.html]. While testing I found that some
> messages got lost after a consuming request times out when no message is
> available.
> Here is a transcript of the test case I used:
> {code}
> #
> # OK: send first, consume later
> #
> $ curl -d "body=message" "http://localhost:8161/api/message/TEST?type=queue";
> Message sent
> $ wget --no-http-keep-alive -q -O -
> "http://localhost:8161/api/message/TEST?type=queue&clientId=GETID&readTimeout=1000";
> message
> #
> # OK: start consuming, then send (within timeout)
> #
> $ wget --no-http-keep-alive -q -O -
> "http://localhost:8161/api/message/TEST?type=queue&clientId=GETID&readTimeout=5000"&;
> [1] 5172
> $ curl -d "body=message" "http://localhost:8161/api/message/TEST?type=queue";
> messageMessage sent[1]+ Fertig wget --no-http-keep-alive -q
> -O -
> "http://localhost:8161/api/message/TEST?type=queue&clientId=GETID&readTimeout=5000";
> #
> # NOK: start consuming, wait for timeout, then send and consume again
> #
> $ wget --no-http-keep-alive -q -O -
> "http://localhost:8161/api/message/TEST?type=queue&clientId=GETID&readTimeout=5000";
> $ curl -d "body=message" "http://localhost:8161/api/message/TEST?type=queue";
> Message sent
> $ wget --no-http-keep-alive -q -O -
> "http://localhost:8161/api/message/TEST?type=queue&clientId=GETID&readTimeout=5000";
> {code}
> The last *wget* returns after the given read timeout without any message.
> When looking at the managament console, the message has been consumed.
> I tested this with 5.8.0 on linux as well as with 5.8.0, 5.9.0 and a freshly
> built 5.10.0 on windows.
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