[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-10 Thread liyinan926
Github user liyinan926 commented on the issue:

https://github.com/apache/spark/pull/21238
  
Makes sense to me.


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[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-10 Thread foxish
Github user foxish commented on the issue:

https://github.com/apache/spark/pull/21238
  
SG. @liyinan926, let's revisit this if we hear from 2.3 users.


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[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-10 Thread mccheah
Github user mccheah commented on the issue:

https://github.com/apache/spark/pull/21238
  
What would make this difficult to backport is the fact that this patch was 
built on top of the big refactor PR that only went in after 2.3. So we'd need 
to rewrite this with the old architecture which is a non-trivial effort.


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[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-10 Thread mccheah
Github user mccheah commented on the issue:

https://github.com/apache/spark/pull/21238
  
I think we can afford to hold off here.


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[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-10 Thread foxish
Github user foxish commented on the issue:

https://github.com/apache/spark/pull/21238
  
@mccheah, wdyt? I just haven't heard from any users here of 2.3 - if you 
think it's useful for 2.3.1 and low risk, then please feel free to propose a 
cherrypick. 


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[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-10 Thread foxish
Github user foxish commented on the issue:

https://github.com/apache/spark/pull/21238
  
Maintenance releases most often have fixes for stability. We could maybe 
backport this since it's not a new feature but an omission from before. If it 
is going to be some effort, thanks to all the refactors that went in so far, I 
think we should think twice about whether we need to. 



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[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-10 Thread liyinan926
Github user liyinan926 commented on the issue:

https://github.com/apache/spark/pull/21238
  
@foxish @mccheah should we also merge this to branch-2.3? I think we should 
target this for 2.3.1.


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[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-10 Thread foxish
Github user foxish commented on the issue:

https://github.com/apache/spark/pull/21238
  
LGTM. Merging to master. 
Thanks @mccheah 


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[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-10 Thread mccheah
Github user mccheah commented on the issue:

https://github.com/apache/spark/pull/21238
  
Requesting sign off and merge from @foxish 


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[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-09 Thread mccheah
Github user mccheah commented on the issue:

https://github.com/apache/spark/pull/21238
  
@rxin @liyinan926 @foxish addressed comments.


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[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-09 Thread erikerlandson
Github user erikerlandson commented on the issue:

https://github.com/apache/spark/pull/21238
  
I agree with @mcheah that the potential code reuse is small. Keeping this 
as a separate pod construction step, decoupled from the user-exposed step, is 
cleaner.


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[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-09 Thread mccheah
Github user mccheah commented on the issue:

https://github.com/apache/spark/pull/21238
  
Also #21260 currently only supports hostPath and PVCs but you definitely 
want emptyDir for isolation (though that looks like a trivial enough change).


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[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-09 Thread mccheah
Github user mccheah commented on the issue:

https://github.com/apache/spark/pull/21238
  
@andrusha I don't think it's entirely analogous - for the simple reason 
that the hostPath volumes PR doesn't take into account `SPARK_LOCAL_DIRS`. That 
environment variable is used to determine the right place for shuffle files. We 
want to strictly tie that setting to emptydir volumes - and moreover this 
should be done transparently for the user, i.e. the user shouldn't have to know 
to provision these volumes to get better performance.


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[GitHub] spark issue #21238: [SPARK-24137][K8s] Mount local directories as empty dir ...

2018-05-07 Thread andrusha
Github user andrusha commented on the issue:

https://github.com/apache/spark/pull/21238
  
Seems like it addresses similar problem to 
https://github.com/apache/spark/pull/21095. It might be worth investigating how 
to unify both.


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