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https://issues.apache.org/jira/browse/SPARK-6112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14606551#comment-14606551
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Arpit Agarwal edited comment on SPARK-6112 at 6/29/15 10:31 PM:
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Hi [~bghit], thanks for the repro steps. I tried it out and saw the output
splits from {{saveAsTextFile}} go to RAM_DISK.
I used Spark v 1.4.0 + Apache Hadoop 2.6.0. Let me try it out with 2.7.0 also
since that's what you had.
was (Author: arpitagarwal):
Hi [~bghit], thanks for t
> Provide external block store 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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