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Posted to issues@spark.apache.org by "Matei Zaharia (JIRA)" <ji...@apache.org> on 2014/11/06 18:39:35 UTC

[jira] [Resolved] (SPARK-993) Don't reuse Writable objects in HadoopRDDs by default

     [ https://issues.apache.org/jira/browse/SPARK-993?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matei Zaharia resolved SPARK-993.
---------------------------------
    Resolution: Won't Fix

We investigated this for 1.0 but found that many InputFormats behave wrongly if you try to clone the object, so we won't fix it.

> Don't reuse Writable objects in HadoopRDDs by default
> -----------------------------------------------------
>
>                 Key: SPARK-993
>                 URL: https://issues.apache.org/jira/browse/SPARK-993
>             Project: Spark
>          Issue Type: Improvement
>            Reporter: Matei Zaharia
>
> Right now we reuse them as an optimization, which leads to weird results when you call collect() on a file with distinct items. We should instead make that behavior optional through a flag.



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