swaminathanmanish commented on code in PR #10359:
URL: https://github.com/apache/pinot/pull/10359#discussion_r1139383484


##########
pinot-controller/src/main/java/org/apache/pinot/controller/api/resources/PinotTableRestletResource.java:
##########
@@ -712,6 +715,37 @@ public String getTableState(
     }
   }
 
+  @GET
+  @Produces(MediaType.APPLICATION_JSON)
+  @Authenticate(AccessType.UPDATE)
+  @Path("/rebalanceStatus/{jobId}")
+  @ApiOperation(value = "Gets detailed stats of a rebalance operation",
+      notes = "Gets detailed stats of a rebalance operation")
+  public ServerRebalanceJobStatusResponse rebalanceStatus(
+      @ApiParam(value = "Rebalance Job Id", required = true) 
@PathParam("jobId") String jobId)
+      throws JsonProcessingException {
+    Map<String, String> controllerJobZKMetadata =
+        _pinotHelixResourceManager.getControllerJobZKMetadataForJobType(jobId, 
ControllerJobType.TABLE_REBALANCE);
+
+    if (controllerJobZKMetadata == null) {
+      throw new ControllerApplicationException(LOGGER, "Failed to find 
controller job id: " + jobId,
+          Response.Status.NOT_FOUND);
+    }
+    TableRebalanceProgressStats tableRebalanceProgressStats =
+        
JsonUtils.stringToObject(controllerJobZKMetadata.get(RebalanceConfigConstants.REBALANCE_PROGRESS_STATS),
+            TableRebalanceProgressStats.class);
+    Long timeSinceStartInSecs = 0L;
+    if 
(!tableRebalanceProgressStats.getStatus().toString().equals(RebalanceResult.Status.DONE.toString()))
 {
+      timeSinceStartInSecs =
+          (long) (System.currentTimeMillis() - 
tableRebalanceProgressStats.getStartTimeInMilliseconds()) / 1000;

Review Comment:
   Its needed, as return type is double. Long (in seconds) makes sense for 
reporting stats



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