[GitHub] [carbondata] kunal642 commented on a change in pull request #3336: [CARBONDATA-3481] Multi-thread pruning fails when datamaps count is just near numOfThreadsForPruning

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kunal642 commented on a change in pull request #3336: [CARBONDATA-3481] Multi-thread pruning fails when datamaps count is just near numOfThreadsForPruning
URL: https://github.com/apache/carbondata/pull/3336#discussion_r309530214
 
 

 ##########
 File path: core/src/main/java/org/apache/carbondata/core/datamap/TableDataMap.java
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 @@ -254,6 +251,16 @@ public CarbonTable getTable() {
       // this should not happen
       throw new RuntimeException(" not all the files processed ");
     }
+    if (datamapListForEachThread.size() < numOfThreadsForPruning) {
+      // If the total datamaps less than 2 * numOfThreadsForPruning,
 
 Review comment:
   Can you change the comment to something like "If the number of groups identified are 3 and the numberOfThread for pruning are 4 then the 4th thread will not get any datamaps to prune, therefore set the 'numOfThreadsForPruning' to 3"

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