Pavel Moravec created QPID-4343: ----------------------------------- Summary: cluster initial update stall when a queue has >10k messages with message groups set Key: QPID-4343 URL: https://issues.apache.org/jira/browse/QPID-4343 Project: Qpid Issue Type: Bug Components: C++ Broker Affects Versions: 0.18 Reporter: Pavel Moravec Attachments: bz854666.patch
Description of problem: Having qpid broker in a cluster and using message groups, an attempt to join a clustered peer causes cluster stall during initial update process, when some queue has >10k messages with message groups set. The reason is that updater node sends information about message groups in ClusterConnectionQueueObserverStateBody message (exactly one message per one queue). If some queue has "too much" messages with msg.groups, such ClusterConnectionQueueObserverStateBody message does not fit into one AMQP frame and it is silently(!) dropped by the updater. Updatee node then waits for the message while updater node (and consequently whole cluster) waits for updatee to mark itself as ready. Version-Release number of selected component (if applicable): 0.14-21, almost surely in 0.18 How reproducible: 100% Steps to Reproduce: 1. Have 2node cluster with 1 node running 2. Produce at least 10k messages with message groups to it: qpid-send --group-key "GROUP_KEY" -m 10000 -a "groupQ; {create:always, node:{type:queue, x-declare:{ arguments:{'qpid.group_header_key':'GROUP_KEY', 'qpid.shared_msg_group':1 }}}}" 3. (re)start 2nd node twice - due to some unknown reason, the first start succeeds while the second does not. Actual results: New joiner stalls the cluster. Expected results: No broker joining a cluster can stall the cluster. Additional info: patch proposed -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@qpid.apache.org For additional commands, e-mail: dev-h...@qpid.apache.org