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From "Maxim Gekk (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-24325) Tests for Hadoop's LinesReader
Date Sun, 20 May 2018 17:05:00 GMT
Maxim Gekk created SPARK-24325:
----------------------------------

             Summary: Tests for Hadoop's LinesReader
                 Key: SPARK-24325
                 URL: https://issues.apache.org/jira/browse/SPARK-24325
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
    Affects Versions: 2.3.0
            Reporter: Maxim Gekk


Currently, there are no tests for [Hadoop LineReader|https://github.com/apache/spark/blob/8d79113b812a91073d2c24a3a9ad94cc3b90b24a/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/HadoopFileLinesReader.scala#L42].
For refactoring or rewriting of the class, need to add tests that cover basic functionality
of the class like:

* Split's boundaries slice lines
* A split slices delimiters - user's specified or defaults
* No duplicates if splits slice delimiters or lines
* Checking constant limits like maximum line length
* Handling a case when internal buffers size is less than line size 



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