github-advanced-security[bot] commented on code in PR #17775:
URL: https://github.com/apache/druid/pull/17775#discussion_r2009683966


##########
server/src/main/java/org/apache/druid/server/coordinator/loading/HttpLoadQueuePeon.java:
##########
@@ -139,17 +146,48 @@
     this.callBackExecutor = callBackExecutor;
 
     this.serverId = baseUrl;
+    this.loadingModeSupplier = loadingModeSupplier;
+    this.serverCapabilities = fetchSegmentLoadingCapabilities();
+  }
+
+  @VisibleForTesting
+  SegmentLoadingCapabilities fetchSegmentLoadingCapabilities()
+  {
     try {
-      this.changeRequestURL = new URL(
-          new URL(baseUrl),
-          StringUtils.nonStrictFormat(
-              "druid-internal/v1/segments/changeRequests?timeout=%d",
-              config.getHostTimeout().getMillis()
-          )
+      final URL segmentLoadingCapabilitiesURL = new URL(
+          new URL(serverId),
+          "druid-internal/v1/segments/loadCapabilities"
+      );
+
+      BytesAccumulatingResponseHandler responseHandler = new 
BytesAccumulatingResponseHandler();
+      InputStream stream = httpClient.go(
+          new Request(HttpMethod.GET, segmentLoadingCapabilitiesURL)
+              .addHeader(HttpHeaders.Names.ACCEPT, MediaType.APPLICATION_JSON),
+          responseHandler,
+          new Duration(DEFAULT_TIMEOUT)
+      ).get();
+
+      if (HttpServletResponse.SC_NOT_FOUND == responseHandler.getStatus()) {
+        int batchSize = config.getBatchSize() == null ? 1 : 
config.getBatchSize();
+        SegmentLoadingCapabilities defaultCapabilities = new 
SegmentLoadingCapabilities(batchSize, batchSize);
+        log.warn(
+            "Historical capabilities endpoint not found at URL[%s]. Using 
default values[%s].",
+            segmentLoadingCapabilitiesURL,
+            defaultCapabilities

Review Comment:
   ## Use of default toString()
   
   Default toString(): SegmentLoadingCapabilities inherits toString() from 
Object, and so is not suitable for printing.
   
   [Show more 
details](https://github.com/apache/druid/security/code-scanning/8763)



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