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https://issues.apache.org/jira/browse/ARTEMIS-4973?focusedWorklogId=928824&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-928824
 ]

ASF GitHub Bot logged work on ARTEMIS-4973:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 06/Aug/24 03:48
            Start Date: 06/Aug/24 03:48
    Worklog Time Spent: 10m 
      Work Description: gaohoward commented on code in PR #5128:
URL: https://github.com/apache/activemq-artemis/pull/5128#discussion_r1704871499


##########
artemis-server/src/main/java/org/apache/activemq/artemis/core/paging/impl/PagingStoreImpl.java:
##########
@@ -228,11 +229,34 @@ private void configureSizeMetric() {
       size.setMax(maxSize, maxSize, maxMessages, maxMessages);
    }
 
+   private void validateNewSettings(final AddressSettings addressSettings) 
throws ActiveMQException {
+
+      Long newPageLimitBytes = addressSettings.getPageLimitBytes();
+
+      if (newPageLimitBytes != null && newPageLimitBytes.longValue() < 0) {
+         newPageLimitBytes = null;
+      }
+      int newPageSize = 
storageManager.getAllowedPageSize(addressSettings.getPageSizeBytes());
+      if (newPageLimitBytes != null && newPageSize > 0) {
+         long newEstimatedMaxPages = newPageLimitBytes / newPageSize;
+         if (this.numberOfPages > newEstimatedMaxPages) {
+            throw 
ActiveMQMessageBundle.BUNDLE.invalidPageSettings(this.storeName.toString(), 
addressSettings, "estimated max pages " + newEstimatedMaxPages + " is less than 
current number of pages " + this.numberOfPages);

Review Comment:
   Make sense. Thanks!





Issue Time Tracking
-------------------

    Worklog Id:     (was: 928824)
    Time Spent: 0.5h  (was: 20m)

> pageSizeBytes/pageLimitBytes combination can cause Address full
> ---------------------------------------------------------------
>
>                 Key: ARTEMIS-4973
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-4973
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 2.36.0
>            Reporter: Howard Gao
>            Assignee: Howard Gao
>            Priority: Major
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> There is an edge case where adjusting pageSizeBytes can cause "Address is 
> full" errors, even though the address is not full.
> Do we need to enforce that pageSizeBytes <= pageLimitBytes?
> Reproducer steps:
> Step 1: configure pageSizeBytes == pageLimitBytes == 1mb:
> $ cat my.broker.properties 
> addressSettings."FOO".pageSizeBytes=1048576
> addressSettings."FOO".pageLimitBytes=1048576
> addressSettings."FOO".maxSizeBytes=1048576
> addressSettings."FOO".pageFullMessagePolicy=FAIL
> addressConfigurations."FOO".routingTypes=MULTICAST
> addressConfigurations."FOO".queueConfigs."FOO".name=FOO
> addressConfigurations."FOO".queueConfigs."FOO".address=FOO
> addressConfigurations."FOO".queueConfigs."FOO".routingType=MULTICAST
> Step 2: run broker
> bin/artemis run --properties my.broker.properties
> Step 3: produce 15 messages
> $ bin/artemis producer --user admin --password admin --destination 
> topic://FOO --message-count 15 --message-size 100000 --protocol amqp
> Step 4: observe paging started on the destination (but the page size is 
> 328kb, can hold more messages)
> INFO  [org.apache.activemq.artemis.core.server] AMQ222038: Starting paging on 
> address 'FOO'; size=1107003 bytes (11 messages); maxSize=1048576 bytes (-1 
> messages); globalSize=1107003 bytes (11 messages); globalMaxSize=1073741824 
> bytes (-1 messages);
> Step 5: stop broker, increase page size
>  cat my.broker.properties 
> addressSettings."FOO".pageSizeBytes=4048576
> ...
> Step 6: run broker, observe logs show paging warning
> 2024-06-25 15:23:47,135 WARN  [org.apache.activemq.artemis.core.server] 
> AMQ224123: Address FOO has more pages than allowed. System currently has 1 
> pages, while the estimated max number of pages is 0 based on the 
> page-limit-bytes (1048576) / page-size (4048576)
> Step 7: try to produce a message, address full
> WARN  [org.apache.activemq.artemis.protocol.amqp.broker.AMQPSessionCallback] 
> AMQ229102: Address "FOO" is full.



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