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https://issues.apache.org/jira/browse/SPARK-1529?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kannan Rajah updated SPARK-1529:
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Description: In some environments, like with MapR, local volumes are
accessed through the Hadoop filesystem interface. Shuffle is implemented by
writing intermediate data to local disk and serving it to remote node using
Netty as a transport mechanism. We want to provide an HDFS based shuffle such
that data can be written to HDFS (instead of local disk) and served using HDFS
API on the remote nodes. This could involve exposing a file system abstraction
to Spark shuffle and have 2 modes of running it. In default mode, it will write
to local disk and in the DFS mode, it will write to HDFS. (was: In some
environments, like with MapR, local volumes are accessed through the Hadoop
filesystem interface. We should allow setting spark.local.dir to a Hadoop
filesystem location. )
> Support DFS based shuffle in addition to Netty shuffle
> ------------------------------------------------------
>
> Key: SPARK-1529
> URL: https://issues.apache.org/jira/browse/SPARK-1529
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Reporter: Patrick Wendell
> Assignee: Kannan Rajah
> Attachments: Spark Shuffle using HDFS.pdf
>
>
> In some environments, like with MapR, local volumes are accessed through the
> Hadoop filesystem interface. Shuffle is implemented by writing intermediate
> data to local disk and serving it to remote node using Netty as a transport
> mechanism. We want to provide an HDFS based shuffle such that data can be
> written to HDFS (instead of local disk) and served using HDFS API on the
> remote nodes. This could involve exposing a file system abstraction to Spark
> shuffle and have 2 modes of running it. In default mode, it will write to
> local disk and in the DFS mode, it will write to HDFS.
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