0a7095156b
### What changes were proposed in this pull request? Add mapPartitionsWithIndex for RDDBarrier. ### Why are the changes needed? There is only one method in `RDDBarrier`. We often use the partition index as a label for the current partition. We need to get the index from `TaskContext` index in the method of `mapPartitions` which is not convenient. ### Does this PR introduce any user-facing change? No ### How was this patch tested? New UT. Closes #26148 from ConeyLiu/barrier-index. Authored-by: Xianyang Liu <xianyang.liu@intel.com> Signed-off-by: Xingbo Jiang <xingbo.jiang@databricks.com>
51 lines
1.8 KiB
Python
51 lines
1.8 KiB
Python
#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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from pyspark.testing.utils import ReusedPySparkTestCase
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class RDDBarrierTests(ReusedPySparkTestCase):
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def test_map_partitions(self):
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"""Test RDDBarrier.mapPartitions"""
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rdd = self.sc.parallelize(range(12), 4)
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self.assertFalse(rdd._is_barrier())
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rdd1 = rdd.barrier().mapPartitions(lambda it: it)
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self.assertTrue(rdd1._is_barrier())
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def test_map_partitions_with_index(self):
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"""Test RDDBarrier.mapPartitionsWithIndex"""
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rdd = self.sc.parallelize(range(12), 4)
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self.assertFalse(rdd._is_barrier())
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def f(index, iterator):
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yield index
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rdd1 = rdd.barrier().mapPartitionsWithIndex(f)
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self.assertTrue(rdd1._is_barrier())
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self.assertEqual(rdd1.collect(), [0, 1, 2, 3])
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if __name__ == "__main__":
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import unittest
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from pyspark.tests.test_rddbarrier import *
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try:
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import xmlrunner
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testRunner = xmlrunner.XMLTestRunner(output='target/test-reports', verbosity=2)
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except ImportError:
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testRunner = None
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unittest.main(testRunner=testRunner, verbosity=2)
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