ankitsultana commented on code in PR #14742:
URL: https://github.com/apache/pinot/pull/14742#discussion_r1901356989


##########
pinot-plugins/pinot-minion-tasks/pinot-minion-builtin-tasks/src/main/java/org/apache/pinot/plugin/minion/tasks/upsertcompactmerge/UpsertCompactMergeTaskGenerator.java:
##########
@@ -296,18 +307,24 @@ public static SegmentSelectionResult 
processValidDocIdsMetadata(Map<String, Stri
       // variables to maintain current group sum
       long currentValidDocsSum = 0;
       long currentTotalDocsSum = 0;
+      double currentOutputSegmentSizeInBytes = 0.0;
 
       for (SegmentMergerMetadata segment : segments) {
         long validDocs = segment.getValidDocIds();
         long invalidDocs = segment.getInvalidDocIds();
+        double expectedSegmentSizeInBytes =
+            (segment.getSegmentZKMetadata().getSizeThresholdToFlushSegment() * 
validDocs * 1.0)

Review Comment:
   `getSizeThresholdToFlushSegment` returns the number of rows not the size in 
bytes.



##########
pinot-plugins/pinot-minion-tasks/pinot-minion-builtin-tasks/src/main/java/org/apache/pinot/plugin/minion/tasks/upsertcompactmerge/UpsertCompactMergeTaskGenerator.java:
##########
@@ -408,6 +426,10 @@ public void validateTaskConfigs(TableConfig tableConfig, 
Map<String, String> tas
     Preconditions.checkState(upsertConfig.isEnableSnapshot(),
         String.format("'enableSnapshot' from UpsertConfig must be enabled for 
%s",
             MinionConstants.UpsertCompactMergeTask.TASK_TYPE));
+    // check valid task config for maxOutputSegmentSize
+    if 
(taskConfigs.containsKey(MinionConstants.UpsertCompactMergeTask.MAX_NUM_RECORDS_PER_SEGMENT_KEY))
 {
+      
DataSizeUtils.toBytes(taskConfigs.get(MinionConstants.UpsertCompactMergeTask.MAX_NUM_RECORDS_PER_SEGMENT_KEY));

Review Comment:
   bug? the key is max num records



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