Re: Integrating ML/DL frameworks with Spark

Shivaram: Yes, we can call it "gang scheduling" or "barrier synchronization". Spark doesn't support it now. The proposal is to have a proper support in Spark's job scheduler, so we can integrate well with MPI-like frameworks. On Tue, May 8, 2018 at 11:17 AM Nan Zhu wrote:

Problem with Spark Master shutting down when zookeeper leader is shutdown

Dear Spark community, Just wanted to bring this issue up which was filed for Spark 1.6.1 ( https://issues.apache.org/jira/browse/SPARK-15544) but also exists in Spark 2.3.0 (https://issues.apache.org/jira/browse/SPARK-23530) We have run into this on production, where Spark Master shuts down if

Revisiting Online serving of Spark models?

Hi y'all, With the renewed interest in ML in Apache Spark now seems like a good a time as any to revisit the online serving situation in Spark ML. DB & other's have done some excellent working moving a lot of the necessary tools into a local linear algebra package that doesn't depend on having a

Re: eager execution and debuggability

The repr() trick is neat when working on a notebook. When working in a library, I used to use an evaluate(dataframe) -> DataFrame function that simply forces the materialization of a dataframe. As Reynold mentions, this is very convenient when working on a lot of chained UDFs, and it is a standard