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https://issues.apache.org/jira/browse/SPARK-6112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14376849#comment-14376849
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Reynold Xin commented on SPARK-6112:
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[~zhanzhang] I created https://issues.apache.org/jira/browse/SPARK-6479 as the
first step of this: to create an API. Do you mind uploading the API part of
this design doc (or even just the entire design doc) to that ticket? Thanks.
> Provide OffHeap support through HDFS RAM_DISK
> ---------------------------------------------
>
> Key: SPARK-6112
> URL: https://issues.apache.org/jira/browse/SPARK-6112
> Project: Spark
> Issue Type: New Feature
> Components: Block Manager
> Reporter: Zhan Zhang
> Attachments: SparkOffheapsupportbyHDFS.pdf
>
>
> HDFS Lazy_Persist policy provide possibility to cache the RDD off_heap in
> hdfs. We may want to provide similar capacity to Tachyon by leveraging hdfs
> RAM_DISK feature, if the user environment does not have tachyon deployed.
> With this feature, it potentially provides possibility to share RDD in memory
> across different jobs and even share with jobs other than spark, and avoid
> the RDD recomputation if executors crash.
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