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https://issues.apache.org/jira/browse/SPARK-24325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Li resolved SPARK-24325.
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Resolution: Fixed
Assignee: Maxim Gekk
Fix Version/s: 2.4.0
> 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
> Assignee: Maxim Gekk
> Priority: Minor
> Fix For: 2.4.0
>
>
> Currently, there are no tests for [Hadoop
> LinesReader|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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