[jira] [Created] (SPARK-7292) Provide operator to truncate lineage without persisting RDD's

["Patrick Wendell (JIRA)" <ji...@apache.org>]

Patrick Wendell created SPARK-7292:
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             Summary: Provide operator to truncate lineage without persisting RDD's
                 Key: SPARK-7292
                 URL: https://issues.apache.org/jira/browse/SPARK-7292
             Project: Spark
          Issue Type: New Feature
          Components: Spark Core
            Reporter: Patrick Wendell


Checkpointing exists in Spark to truncate a lineage chain. I've heard requests from some users to allow truncation of lineage in a way that is "cheap" and doesn't serialized and persist the RDD. This is possible if the user is willing to forgo fault tolerance for that RDD (for instance, for shorter running jobs or ones that use a small number of machines). It's pretty easy to allow this so we should look into it for Spark 1.5.



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