Re: off-heap certain operations

2016-02-16 Thread Ovidiu-Cristian MARCU
Well, it is quite important the off-heap setting and now I am curios about other parameters, I hope everything else is well documented or not missleading. Best, Ovidiu > On 12 Feb 2016, at 19:18, Sean Owen wrote: > > I don't think much more is said since in fact it would affect parts of > the i

Re: off-heap certain operations

2016-02-16 Thread Li Ming Tsai
ect: Re: off-heap certain operations I don't think much more is said since in fact it would affect parts of the implementations of lots of operations -- anything touching Tungsten. It wouldn't be meaningful to try to list everything. The difference is allocating memory on the

Re: off-heap certain operations

2016-02-12 Thread Sean Owen
I don't think much more is said since in fact it would affect parts of the implementations of lots of operations -- anything touching Tungsten. It wouldn't be meaningful to try to list everything. The difference is allocating memory on the heap or with sun.misc.Unsafe. This is definitely something

Re: off-heap certain operations

2016-02-12 Thread Ovidiu-Cristian MARCU
I found nothing about the certain operations. Still not clear, certain is poor documentation. Can someone give an answer so I can consider using this new release? spark.memory.offHeap.enabled If true, Spark will attempt to use off-heap memory for certain operations. > On 12 Feb 2016, at 13:21,

Re: off-heap certain operations

2016-02-12 Thread Ted Yu
Ovidiu-Cristian: Please see the following JIRA / PR : [SPARK-12251] Document and improve off-heap memory configurations Cheers On Thu, Feb 11, 2016 at 11:06 PM, Sea <261810...@qq.com> wrote: > spark.memory.offHeap.enabled (default is false) , it is wrong in spark > docs. Spark1.6 do not recommen