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From iven <...@git.apache.org>
Subject [GitHub] spark pull request: Add role and checkpoint support for Mesos back...
Date Mon, 03 Mar 2014 06:17:22 GMT
Github user iven commented on the pull request:

    https://github.com/apache/spark/pull/60#issuecomment-36484214
  
    If checkpoint is enabled both in spark and Mesos slaves, the slaves will write spark and
executors information periodically to the disk. Yes, it's used for Spark to survive slave
restarts.
    The reason why it's not enabled by default is, if checkpoint is enabled, spark will only
receive offers from checkpointing slaves.
    See here for details: http://mesos.apache.org/documentation/latest/slave-recovery/
    
    Hadoop and Storm framework both get it disabled by default:
    https://github.com/mesos/hadoop/blob/master/configuration.md
    https://github.com/mesosphere/storm-mesos/blob/master/storm.yaml


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