[jira] Updated: (QPID-1621) Flow control fails to release credit when unacknowledge message count exceeds the low water mark
[ https://issues.apache.org/jira/browse/QPID-1621?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Martin Ritchie updated QPID-1621: - Affects Version/s: (was: 0.5) (was: M4) (was: M3) M2.1 This particular issue was actually related to M2.1 where the broker decided that there was a low water mark which affects ALL ack modes other than NO_ACK. The broker would stop sending messages when the High (5000 default was reached) and then would not start sending until it was < low water mark (5000 / 2 by default) I'm guessing the < check was erroneous, this is unlike to affect anything post M3 as the _prefetch_LowerWaterMark has been removed. > Flow control fails to release credit when unacknowledge message count exceeds > the low water mark > > > Key: QPID-1621 > URL: https://issues.apache.org/jira/browse/QPID-1621 > Project: Qpid > Issue Type: Bug > Components: Java Broker >Affects Versions: M2.1 >Reporter: Marnie McCormack >Assignee: Aidan Skinner > Attachments: > 0001-QPID-1621-add-testHighLowStarvation-to-test-this-is.patch > > > Summary: > If we receive more than 2500 msgs on a transacted session then we cannot > recover that credit and will block at the prefetch limit of 5000. > Acknowledging at msg 2501 demonstrates this issue (of being limited to 5000 > mgs) but at <2500 then we are able to receive as many messages as are > available, beyond 5000. > This issue has been seen on Qpid M3, further extraction of a test case and > testing on M4 is required. > The test should also adjust the low water mark to identify if that is part of > the issue. > Workaround: > To prevent client starvation ensure that clients never have more than the low > water mark (2500 default) of unacked messages. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - Apache Qpid - AMQP Messaging Implementation Project: http://qpid.apache.org Use/Interact: mailto:dev-subscr...@qpid.apache.org
[jira] Updated: (QPID-1621) Flow control fails to release credit when unacknowledge message count exceeds the low water mark
[ https://issues.apache.org/jira/browse/QPID-1621?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Aidan Skinner updated QPID-1621: Fix Version/s: (was: M5) Affects Version/s: M5 > Flow control fails to release credit when unacknowledge message count exceeds > the low water mark > > > Key: QPID-1621 > URL: https://issues.apache.org/jira/browse/QPID-1621 > Project: Qpid > Issue Type: Bug > Components: Java Broker >Affects Versions: M3, M4, M5 >Reporter: Marnie McCormack >Assignee: Aidan Skinner > Attachments: > 0001-QPID-1621-add-testHighLowStarvation-to-test-this-is.patch > > > Summary: > If we receive more than 2500 msgs on a transacted session then we cannot > recover that credit and will block at the prefetch limit of 5000. > Acknowledging at msg 2501 demonstrates this issue (of being limited to 5000 > mgs) but at <2500 then we are able to receive as many messages as are > available, beyond 5000. > This issue has been seen on Qpid M3, further extraction of a test case and > testing on M4 is required. > The test should also adjust the low water mark to identify if that is part of > the issue. > Workaround: > To prevent client starvation ensure that clients never have more than the low > water mark (2500 default) of unacked messages. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - Apache Qpid - AMQP Messaging Implementation Project: http://qpid.apache.org Use/Interact: mailto:dev-subscr...@qpid.apache.org
[jira] Updated: (QPID-1621) Flow control fails to release credit when unacknowledge message count exceeds the low water mark
[ https://issues.apache.org/jira/browse/QPID-1621?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Aidan Skinner updated QPID-1621: Attachment: 0001-QPID-1621-add-testHighLowStarvation-to-test-this-is.patch test case. passes against C++ broker, fails against Java broker. > Flow control fails to release credit when unacknowledge message count exceeds > the low water mark > > > Key: QPID-1621 > URL: https://issues.apache.org/jira/browse/QPID-1621 > Project: Qpid > Issue Type: Bug > Components: Java Broker >Affects Versions: M3, M4 >Reporter: Marnie McCormack >Assignee: Aidan Skinner > Fix For: M5 > > Attachments: > 0001-QPID-1621-add-testHighLowStarvation-to-test-this-is.patch > > > Summary: > If we receive more than 2500 msgs on a transacted session then we cannot > recover that credit and will block at the prefetch limit of 5000. > Acknowledging at msg 2501 demonstrates this issue (of being limited to 5000 > mgs) but at <2500 then we are able to receive as many messages as are > available, beyond 5000. > This issue has been seen on Qpid M3, further extraction of a test case and > testing on M4 is required. > The test should also adjust the low water mark to identify if that is part of > the issue. > Workaround: > To prevent client starvation ensure that clients never have more than the low > water mark (2500 default) of unacked messages. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. - Apache Qpid - AMQP Messaging Implementation Project: http://qpid.apache.org Use/Interact: mailto:dev-subscr...@qpid.apache.org
