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cshannon pushed a commit to branch activemq-5.19.x
in repository https://gitbox.apache.org/repos/asf/activemq.git
The following commit(s) were added to refs/heads/activemq-5.19.x by this push:
new 4f3bafbcb7 AMQ-9823 - properly clear ack set from ackAndPreparedMap
4f3bafbcb7 is described below
commit 4f3bafbcb76f86fc89bf3a172044ccea602a27e6
Author: Christopher L. Shannon <[email protected]>
AuthorDate: Thu Dec 18 16:35:02 2025 -0500
AMQ-9823 - properly clear ack set from ackAndPreparedMap
Fix the logic that removes prepared acks from the ackAndPreparedMap
that were loaded during XA recovery on commit/rollback so that if the
set of acks for a key is empty the set it is removed from the map
(cherry picked from commit 5cc1e73b6ade9cb9d0fed5c3702c22fbebee9dcb)
---
.../apache/activemq/store/kahadb/KahaDBStore.java | 2 +-
.../activemq/store/kahadb/KahaDBStoreTest.java | 33 ++++++++++++++++++++++
2 files changed, 34 insertions(+), 1 deletion(-)
diff --git
a/activemq-kahadb-store/src/main/java/org/apache/activemq/store/kahadb/KahaDBStore.java
b/activemq-kahadb-store/src/main/java/org/apache/activemq/store/kahadb/KahaDBStore.java
index 63273bcce7..0c526b6399 100644
---
a/activemq-kahadb-store/src/main/java/org/apache/activemq/store/kahadb/KahaDBStore.java
+++
b/activemq-kahadb-store/src/main/java/org/apache/activemq/store/kahadb/KahaDBStore.java
@@ -465,7 +465,7 @@ public class KahaDBStore extends MessageDatabase implements
PersistenceAdapter,
Set<String> ackedAndPrepared =
ackedAndPreparedMap.get(key);
if (ackedAndPrepared != null) {
ackedAndPrepared.remove(id);
- if (ackedAndPreparedMap.isEmpty()) {
+ if (ackedAndPrepared.isEmpty()) {
ackedAndPreparedMap.remove(key);
}
}
diff --git
a/activemq-unit-tests/src/test/java/org/apache/activemq/store/kahadb/KahaDBStoreTest.java
b/activemq-unit-tests/src/test/java/org/apache/activemq/store/kahadb/KahaDBStoreTest.java
index 46f7772cf2..edfb006c48 100644
---
a/activemq-unit-tests/src/test/java/org/apache/activemq/store/kahadb/KahaDBStoreTest.java
+++
b/activemq-unit-tests/src/test/java/org/apache/activemq/store/kahadb/KahaDBStoreTest.java
@@ -16,6 +16,7 @@
*/
package org.apache.activemq.store.kahadb;
+import java.util.ArrayList;
import java.util.Vector;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
@@ -32,6 +33,7 @@ import org.junit.Before;
import org.junit.Test;
+import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class KahaDBStoreTest {
@@ -106,4 +108,35 @@ public class KahaDBStoreTest {
assertTrue("no exceptions " + exceptions, exceptions.isEmpty());
}
+
+ @Test
+ public void testTrackAndForgetRecoveredAcks() throws Exception {
+ final ArrayList<MessageAck> acks = new ArrayList<>();
+ for (int i = 0; i < 10; i++) {
+ MessageAck ack = new MessageAck();
+ ack.setLastMessageId(new MessageId(producerId, i));
+ acks.add(ack);
+ }
+
+ // Add track 10 recovered acks and verify they are in the
+ // ackedAndPreparedMap. There should be 1 entry for the dest
+ // that contains a set of the ids
+ underTest.trackRecoveredAcks(acks);
+ assertEquals(1, underTest.ackedAndPreparedMap.size());
+ assertEquals(10, underTest.ackedAndPreparedMap.get(
+ underTest.getDestination().getPhysicalName()).size());
+
+ // forget 5 of the recovered acks
+ // there should now only be 5 remaining that are tracked
+ underTest.forgetRecoveredAcks(new ArrayList<>(acks.subList(0, 5)),
false);
+ assertEquals(5, underTest.ackedAndPreparedMap.get(
+ underTest.getDestination().getPhysicalName()).size());
+
+ // forget the rest, the ackedAndPreparedMap should now be empty
+ // because any entries that contain a set of size 0 should be removed
+ // from the map entirely. Before AMQ-9823 this was keeping an empty set
+ // in the map leading to a possible small memory leak
+ underTest.forgetRecoveredAcks(new ArrayList<>(acks.subList(5, 10)),
false);
+ assertTrue(underTest.ackedAndPreparedMap.isEmpty());
+ }
}
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