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reschke pushed a commit to branch OAK-11642
in repository https://gitbox.apache.org/repos/asf/jackrabbit-oak.git

commit 7890b2bde6f76b07fc29bdca44e35fd71b72c7fc
Author: Julian Reschke <[email protected]>
AuthorDate: Sun Apr 6 16:00:18 2025 +0100

    OAK-11642: oak-segment-tar uses unmaintained concurrentlinkedhashmap-lru
---
 oak-segment-tar/pom.xml                                     | 13 -------------
 .../org/apache/jackrabbit/oak/segment/CommitsTracker.java   |  6 +++---
 .../jackrabbit/oak/segment/SegmentNodeStoreStats.java       |  6 ++----
 3 files changed, 5 insertions(+), 20 deletions(-)

diff --git a/oak-segment-tar/pom.xml b/oak-segment-tar/pom.xml
index 6361823553..5c1649c90b 100644
--- a/oak-segment-tar/pom.xml
+++ b/oak-segment-tar/pom.xml
@@ -32,10 +32,6 @@
 
     <name>Oak Segment Tar</name>
 
-    <properties>
-        
<concurrentlinkedhashmap.version>1.4.2</concurrentlinkedhashmap.version>
-    </properties>
-
     <build>
         <plugins>
             <plugin>
@@ -332,15 +328,6 @@
             <scope>provided</scope>
         </dependency>
 
-               <!-- ConcurrentLinkedHashMap -->
-
-        <dependency>
-            <groupId>com.googlecode.concurrentlinkedhashmap</groupId>
-            <artifactId>concurrentlinkedhashmap-lru</artifactId>
-            <version>${concurrentlinkedhashmap.version}</version>
-            <scope>provided</scope>
-           </dependency>
-
         <!-- Dependencies on Oak testing modules -->
 
         <dependency>
diff --git 
a/oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/CommitsTracker.java
 
b/oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/CommitsTracker.java
index 4116468ee4..2e3ebd3160 100644
--- 
a/oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/CommitsTracker.java
+++ 
b/oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/CommitsTracker.java
@@ -19,8 +19,10 @@
 package org.apache.jackrabbit.oak.segment;
 
 import java.lang.ref.WeakReference;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.Iterator;
+import java.util.LinkedHashMap;
 import java.util.Map;
 import java.util.Queue;
 import java.util.concurrent.ConcurrentHashMap;
@@ -28,7 +30,6 @@ import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.concurrent.ConcurrentMap;
 import java.util.function.Supplier;
 
-import com.googlecode.concurrentlinkedhashmap.ConcurrentLinkedHashMap;
 import org.apache.jackrabbit.oak.segment.file.tar.GCGeneration;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -199,8 +200,7 @@ class CommitsTracker {
     }
 
     public Map<String, Long> getCommitsCountOthers() {
-        Map<String, Long> commitsOther = new 
ConcurrentLinkedHashMap.Builder<String, Long>()
-                .maximumWeightedCapacity(otherWritersLimit).build();
+        Map<String, Long> commitsOther = new LinkedHashMap(otherWritersLimit);
         long t = System.currentTimeMillis() - 60000;
         for (Commit commit : commits) {
             if (commit.getQueued() > t) {
diff --git 
a/oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/SegmentNodeStoreStats.java
 
b/oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/SegmentNodeStoreStats.java
index 7e98e0c4c1..2ff710da99 100644
--- 
a/oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/SegmentNodeStoreStats.java
+++ 
b/oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/SegmentNodeStoreStats.java
@@ -145,11 +145,9 @@ public class SegmentNodeStoreStats implements 
SegmentNodeStoreStatsMBean, Segmen
         TabularDataSupport tabularData = new TabularDataSupport(new 
TabularType(typeName, "Most active writers",
                 commitsPerWriterRowType, new String[] { writerDescription }));
 
-        if (commitsCountMap.isEmpty()) {
-            commitsCountMap.put("N/A", 0L);
-        }
+        Map<String, Long> map = commitsCountMap.isEmpty() ? Map.of("N/A", 0L) 
: commitsCountMap;
 
-        commitsCountMap.entrySet().stream()
+        map.entrySet().stream()
                 .sorted(Comparator.<Entry<String, Long>> 
comparingLong(Entry::getValue).reversed()).map(e -> {
                     Map<String, Object> m = new HashMap<>();
                     m.put("count", e.getValue());

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