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From "Imran Rashid (JIRA)" <>
Subject [jira] [Created] (SPARK-17675) Add Blacklisting of Executors & Nodes within one TaskSet
Date Tue, 27 Sep 2016 02:04:21 GMT
Imran Rashid created SPARK-17675:

             Summary: Add Blacklisting of Executors & Nodes within one TaskSet
                 Key: SPARK-17675
             Project: Spark
          Issue Type: Task
          Components: Scheduler
    Affects Versions: 2.0.0
            Reporter: Imran Rashid
            Assignee: Imran Rashid

This is a step along the way to SPARK-8425 -- see the design doc on that jira for a complete
discussion of blacklisting.

To enable incremental review, the first step proposed here is to expand the blacklisting within
tasksets.  In particular, this will enable blacklisting for

* (task, executor) pairs (this already exists via an undocumented config)
* (task, node)
* (taskset, executor)
* (taskset, node)

In particular, adding (task, node) is critical to making spark fault-tolerant of one-bad disk
in a cluster, without requiring careful tuning of "spark.task.maxFailures".  The other additions
are also important to avoid many misleading task failures and long scheduling delays when
there is one bad node on a large cluster.

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