Liang-Chi Hsieh created SPARK-15430:
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Summary: Access ListAccumulator's value could possibly cause
java.util.ConcurrentModificationException
Key: SPARK-15430
URL: https://issues.apache.org/jira/browse/SPARK-15430
Project: Spark
Issue Type: Bug
Components: SQL
Reporter: Liang-Chi Hsieh
In ListAccumulator we create an unmodifiable view for underlying list. However,
it doesn't prevent the underlying to be modified further. So as we access the
unmodifiable list, the underlying list can be modified in the same time. It
could cause java.util.ConcurrentModificationException. We should fix it.
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