[jira] [Resolved] (SPARK-24325) Tests for Hadoop's LinesReader

["Xiao Li (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-24325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiao Li resolved SPARK-24325.
-----------------------------
       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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