This closes #200 - docs and settings

activemq-server/src/main/java/org/apache/activemq/core/persistence/impl/journal/JournalStorageManager.java

@@ -115,6 +115,7 @@ import org.apache.activemq.utils.ByteUtil;
 import org.apache.activemq.utils.DataConstants;
 import org.apache.activemq.utils.ExecutorFactory;
 import org.apache.activemq.utils.ActiveMQThreadFactory;
+import org.apache.activemq.utils.UUID;
 import org.apache.activemq.utils.XidCodecSupport;
 
 import static org.apache.activemq.core.persistence.impl.journal.JournalRecordIds.ACKNOWLEDGE_CURSOR;
@@ -3489,9 +3490,42 @@ public class JournalStorageManager implements StorageManager
          // SimpleString simpleStr = new SimpleString(duplID);
          // return "DuplicateIDEncoding [address=" + address + ", duplID=" + simpleStr + "]";
 
-         return "DuplicateIDEncoding [address=" + address + ", duplID=" + ByteUtil.bytesToHex(duplID, 2) + "]";
+         String bridgeRepresentation = null;
+
+         // The bridge will generate IDs on these terms:
+         // This will make them easier to read
+         if (address.toString().startsWith("BRIDGE") && duplID.length == 24)
+         {
+            try
+            {
+               ByteBuffer buff = ByteBuffer.wrap(duplID);
+
+               // 16 for UUID
+               byte[] bytesUUID = new byte[16];
+
+               buff.get(bytesUUID);
+
+               UUID uuid = new UUID(UUID.TYPE_TIME_BASED, bytesUUID);
+
+               long id = buff.getLong();
+               bridgeRepresentation = "nodeUUID=" + uuid.toString() + " messageID=" + id;
+            }
+            catch (Throwable ignored)
+            {
+               bridgeRepresentation = null;
+            }
          }
 
+         if (bridgeRepresentation != null)
+         {
+            return "DuplicateIDEncoding [address=" + address + ", duplID=" + ByteUtil.bytesToHex(duplID, 2) + " / " +
+               bridgeRepresentation + "]";
+         }
+         else
+         {
+            return "DuplicateIDEncoding [address=" + address + ", duplID=" + ByteUtil.bytesToHex(duplID, 2) + "]";
+         }
+      }
    }
 
    /**

docs/user-manual/en/configuration-index.md

@@ -48,7 +48,7 @@ Name | Description
 [jmx-management-enabled](management.md "30.2.1. Configuring JMX")                   |  true means that the management API is available via JMX. Default=true
 [journal-buffer-size](persistence.md)                                               |  The size of the internal buffer on the journal in KB. Default=490 KiB
 [journal-buffer-timeout](persistence.md)                                            |  The Flush timeout for the journal buffer
-[journal-compact-min-files](persistence.md)                                         |  The minimal number of data files before we can start compacting. Default=10
+[journal-compact-min-files](persistence.md)                                         |  The minimal number of data files before we can start compacting. Setting this to 0 means compacting is disabled. Default=10
 [journal-compact-percentage](persistence.md)                                        |  The percentage of live data on which we consider compacting the journal. Default=30
 [journal-directory](persistence.md)                                                 |  the directory to store the journal files in. Default=data/journal
 [journal-file-size](persistence.md)                                                 |  the size (in bytes) of each journal file. Default=10485760 (10 MB)

docs/user-manual/en/persistence.md

@@ -269,6 +269,11 @@ The message journal is configured using the following attributes in
     journal. The compacting algorithm won't start until you have at
     least `journal-compact-min-files`
 
+    Setting this to 0 will disable the feature to compact completely. 
+    This could be dangerous though as the journal could grow indefinitely.
+    Use it wisely!
+
+
     The default for this parameter is `10`
 
 -   `journal-compact-percentage`

tests/extra-tests/pom.xml

@@ -25,7 +25,7 @@
    <parent>
       <groupId>org.apache.activemq.tests</groupId>
       <artifactId>activemq-tests-pom</artifactId>
-      <version>6.0.1-SNAPSHOT</version>
+      <version>10.0.0-SNAPSHOT</version>
    </parent>
 
    <artifactId>extra-tests</artifactId>