docstr: Verify the task context correct when reused python worker
docstr_tok: ["Verify","the","task","context","correct","when","reused","python","worker"]
code: def check_task_context_correct_with_python_worker_reuse(self):
      """Verify the task context correct when reused python worker"""
      # start a normal job first to start all workers and get all worker pids
      worker_pids = (
          self.sc.parallelize(range(2), 2)
          .map(lambda x: os.getpid())
          .collect()
      )
      # the worker will reuse in this barrier job
      rdd = self.sc.parallelize(range(10), 2)
  
      def context(iterator):
          tp = TaskContext.get().partitionId()
          try:
              bp = BarrierTaskContext.get().partitionId()
          except Exception:
              bp = -1
  
          yield (tp, bp, os.getpid())
  
      # normal stage after normal stage
      normal_result = rdd.mapPartitions(context).collect()
      tps, bps, pids = zip(*normal_result)
      self.assertTrue(tps == (0, 1))
      self.assertTrue(bps == (-1, -1))
      for pid in pids:
          self.assertTrue(pid in worker_pids)
      # barrier stage after normal stage
      barrier_result = rdd.barrier().mapPartitions(context).collect()
      tps, bps, pids = zip(*barrier_result)
      self.assertTrue(tps == (0, 1))
      self.assertTrue(bps == (0, 1))
      for pid in pids:
          self.assertTrue(pid in worker_pids)
      # normal stage after barrier stage
      normal_result2 = rdd.mapPartitions(context).collect()
      tps, bps, pids = zip(*normal_result2)
      self.assertTrue(tps == (0, 1))
      self.assertTrue(bps == (-1, -1))
      for pid in pids:
          self.assertTrue(pid in worker_pids)
      return True
  
imports: import os
  import random
  import stat
  import sys
  import tempfile
  import time
  import unittest
  from pyspark import SparkConf, SparkContext, TaskContext, BarrierTaskContext
  from pyspark.testing.utils import PySparkTestCase, SPARK_HOME, eventually
label_desc: Use image node_id 3 for calling the TaskContextTestsWithWorkerReuse obj's underlying member method code with example usage: obj.check_task_context_correct_with_python_worker_reuse() and returns: True