Suvrat1629 commented on code in PR #5332:
URL: https://github.com/apache/accumulo/pull/5332#discussion_r1963706423


##########
server/base/src/main/java/org/apache/accumulo/server/util/ECAdmin.java:
##########
@@ -153,43 +166,112 @@ private void listCompactorsByQueue(ServerContext 
context) {
     }
   }
 
-  private void runningCompactions(ServerContext context, boolean details) {
+  private void runningCompactions(ServerContext context, boolean details, 
String format) {
     CompactionCoordinatorService.Client coordinatorClient = null;
-    TExternalCompactionList running;
+    Map<String,TExternalCompaction> runningCompactionsMap = new HashMap<>();
+
     try {
       coordinatorClient = getCoordinatorClient(context);
-      running = coordinatorClient.getRunningCompactions(TraceUtil.traceInfo(), 
context.rpcCreds());
-      if (running == null) {
+
+      // Fetch running compactions as a list and convert to a map
+      TExternalCompactionList running =
+          coordinatorClient.getRunningCompactions(TraceUtil.traceInfo(), 
context.rpcCreds());
+
+      if (running == null || running.getCompactions().isEmpty()) {
         System.out.println("No running compactions found.");
         return;
       }
-      var ecidMap = running.getCompactions();
-      if (ecidMap == null) {
-        System.out.println("No running compactions found.");
-        return;
+
+      // Convert the list to a map
+      for (Map.Entry<String,TExternalCompaction> entry : 
running.getCompactions().entrySet()) {
+        runningCompactionsMap.put(entry.getKey(), entry.getValue());
       }
-      ecidMap.forEach((ecid, ec) -> {
-        if (ec != null) {
-          var runningCompaction = new RunningCompaction(ec);
-          var addr = runningCompaction.getCompactorAddress();
-          var kind = runningCompaction.getJob().kind;
-          var queue = runningCompaction.getQueueName();
-          var ke = KeyExtent.fromThrift(runningCompaction.getJob().extent);
-          System.out.format("%s %s %s %s TableId: %s\n", ecid, addr, kind, 
queue, ke.tableId());
+
+      StringBuilder csvOutput = new StringBuilder();
+      List<Map<String,Object>> jsonOutput = new ArrayList<>();
+
+      if ("csv".equalsIgnoreCase(format)) {
+        csvOutput.append(
+            
"ECID,Compactor,Kind,Queue,TableId,Status,LastUpdate,Duration,NumFiles,Progress\n");
+      }
+
+      for (Map.Entry<String,TExternalCompaction> entry : 
runningCompactionsMap.entrySet()) {
+        TExternalCompaction ec = entry.getValue();
+        if (ec == null) {
+          continue;
+        }
+
+        var runningCompaction = new RunningCompaction(ec);
+        String ecid = runningCompaction.getJob().getExternalCompactionId();
+        var addr = runningCompaction.getCompactorAddress();
+        var kind = runningCompaction.getJob().kind;
+
+        // Ensure getQueueName() exists, else use an alternative like 
getGroupName()
+        var queueName = runningCompaction.getQueueName(); // If this method 
does not exist, replace
+                                                          // with 
getGroupName()
+
+        var ke = KeyExtent.fromThrift(runningCompaction.getJob().extent);
+        String tableId = ke.tableId().canonical();
+
+        String status = "";
+        long lastUpdate = 0, duration = 0;
+        int numFiles = 0;
+        double progress = 0.0;
+
+        if (details) {
+          var runningCompactionInfo = new RunningCompactionInfo(ec);
+          status = runningCompactionInfo.status;
+          lastUpdate = runningCompactionInfo.lastUpdate;
+          duration = runningCompactionInfo.duration;
+          numFiles = runningCompactionInfo.numFiles;
+          progress = runningCompactionInfo.progress;
+        }
+
+        if ("plain".equalsIgnoreCase(format)) {
+          System.out.format("%s %s %s %s TableId: %s\n", ecid, addr, kind, 
queueName, tableId);
           if (details) {
-            var runningCompactionInfo = new RunningCompactionInfo(ec);
-            var status = runningCompactionInfo.status;
-            var last = runningCompactionInfo.lastUpdate;
-            var duration = runningCompactionInfo.duration;
-            var numFiles = runningCompactionInfo.numFiles;
-            var progress = runningCompactionInfo.progress;
             System.out.format("  %s Last Update: %dms Duration: %dms Files: %d 
Progress: %.2f%%\n",
-                status, last, duration, numFiles, progress);
+                status, lastUpdate, duration, numFiles, progress);
+          }
+        }
+
+        if ("csv".equalsIgnoreCase(format)) {
+          csvOutput.append(String.format("%s,%s,%s,%s,%s,%s,%d,%d,%d,%.2f\n", 
ecid, addr, kind,
+              queueName, tableId, status, lastUpdate, duration, numFiles, 
progress));

Review Comment:
   removed the `csvOutput.append()` and made it output as we process the 
compaction. Please take a look :)



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