[
https://issues.apache.org/jira/browse/SPARK-22148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17077614#comment-17077614
]
Thomas Graves commented on SPARK-22148:
---------------------------------------
I'm not sure I follow what you are saying. Are you just saying even with this
change, you still see the behavior that your job is aborted? This PR is a
heuristic which makes it better in some cases but it still might hit that
condition.
You say " where all the other executors are busy and no idle blacklisted
executor left to kill". I'm not sure what that means.I assume it already
killed some and if there aren't any left to kill, is it just taking a long time
to acquire more from yarn? If not please give more detail
> TaskSetManager.abortIfCompletelyBlacklisted should not abort when all current
> executors are blacklisted but dynamic allocation is enabled
> -----------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-22148
> URL: https://issues.apache.org/jira/browse/SPARK-22148
> Project: Spark
> Issue Type: Bug
> Components: Scheduler, Spark Core
> Affects Versions: 2.2.0
> Reporter: Juan Rodríguez Hortalá
> Assignee: Dhruve Ashar
> Priority: Major
> Fix For: 2.4.1, 3.0.0
>
> Attachments: SPARK-22148_WIP.diff
>
>
> Currently TaskSetManager.abortIfCompletelyBlacklisted aborts the TaskSet and
> the whole Spark job with `task X (partition Y) cannot run anywhere due to
> node and executor blacklist. Blacklisting behavior can be configured via
> spark.blacklist.*.` when all the available executors are blacklisted for a
> pending Task or TaskSet. This makes sense for static allocation, where the
> set of executors is fixed for the duration of the application, but this might
> lead to unnecessary job failures when dynamic allocation is enabled. For
> example, in a Spark application with a single job at a time, when a node
> fails at the end of a stage attempt, all other executors will complete their
> tasks, but the tasks running in the executors of the failing node will be
> pending. Spark will keep waiting for those tasks for 2 minutes by default
> (spark.network.timeout) until the heartbeat timeout is triggered, and then it
> will blacklist those executors for that stage. At that point in time, other
> executors would had been released after being idle for 1 minute by default
> (spark.dynamicAllocation.executorIdleTimeout), because the next stage hasn't
> started yet and so there are no more tasks available (assuming the default of
> spark.speculation = false). So Spark will fail because the only executors
> available are blacklisted for that stage.
> An alternative is requesting more executors to the cluster manager in this
> situation. This could be retried a configurable number of times after a
> configurable wait time between request attempts, so if the cluster manager
> fails to provide a suitable executor then the job is aborted like in the
> previous case.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]