Github user sourind commented on the pull request:
https://github.com/apache/spark/pull/10907#issuecomment-175187527
There is a TODO in Accumulators.scala
<https://github.com/apache/spark/blob/302bb569f3e1f09e2e7cea5e4e7f5c6953b0fc82/core/src/main/scala/org/apache/spark/Accumulator.scala#L159>
for
adding different accumulator params (Lists, Strings etc.). This change is
similar to that.
Also, with this change people can accumulate values for keys that are not
initially defined in the driver -therefore, allowing users to define
metrics at runtime.
Let me know your thoughts on this.
Thanks,
Souri
On Mon, Jan 25, 2016 at 6:00 PM, Reynold Xin <[email protected]>
wrote:
> Do we need this in Spark? It seems like it is just a few lines of code.
>
> â
> Reply to this email directly or view it on GitHub
> <https://github.com/apache/spark/pull/10907#issuecomment-174773667>.
>
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