QiangCai commented on a change in pull request #3433: [CARBONDATA-3570] Change 
task number to jobid+taskid for FileFormat
URL: https://github.com/apache/carbondata/pull/3433#discussion_r344434713
 
 

 ##########
 File path: 
integration/spark-datasource/src/main/scala/org/apache/spark/sql/carbondata/execution/datasources/SparkCarbonFileFormat.scala
 ##########
 @@ -154,8 +154,11 @@ class SparkCarbonFileFormat extends FileFormat
           path
         }
         context.getConfiguration.set("carbon.outputformat.writepath", 
updatedPath)
+        // "jobid"+"x"+"taskid", task retry should have same task number
         context.getConfiguration.set("carbon.outputformat.taskno",
-          UUID.randomUUID().toString.replace("-", ""))
+          context.getTaskAttemptID.getJobID.getJtIdentifier +
+          context.getTaskAttemptID.getJobID.getId
+          + 'x' + context.getTaskAttemptID.getTaskID.getId)
 
 Review comment:
   old file name already use "-", "\_"  to separate each parts. 
   taskNo is a single part, no need to use "-", "\_"  to separate it. 
   So we use 'x' to contact  jobId and taskId to a single part of file name.

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