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Posted to issues@spark.apache.org by "Liquan Pei (JIRA)" <ji...@apache.org> on 2014/10/07 08:19:33 UTC
[jira] [Updated] (SPARK-3828) Spark returns inconsistent results
when building with different Hadoop version
[ https://issues.apache.org/jira/browse/SPARK-3828?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Liquan Pei updated SPARK-3828:
------------------------------
Summary: Spark returns inconsistent results when building with different Hadoop version (was: Spark returns inconsistent results when building with different HADOOP version )
> Spark returns inconsistent results when building with different Hadoop version
> -------------------------------------------------------------------------------
>
> Key: SPARK-3828
> URL: https://issues.apache.org/jira/browse/SPARK-3828
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.1.0
> Environment: OSX 10.9, Spark master branch
> Reporter: Liquan Pei
>
> For text8 data at http://mattmahoney.net/dc/text8.zip. To reproduce, please unzip first.
> Spark build with different Hadoop version returns different result.
> {code}
> val data = sc.textFile("text8")
> data.count()
> {code}
> returns 1 when built with SPARK_HADOOP_VERSION=1.0.4 and return 2 when built with SPARK_HADOOP_VERSION=2.4.0.
> Looking through the rdd code, it seems that textFile uses hadoopFile which creates HadoopRDD, we should probably create newHadoopRDD when building spark with SPARK_HADOOP_VERSION >= 2.0.0.
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