Re: Heavy one-off writes best practices

2018-02-04 Thread kurt greaves
> > Would you know if there is evidence that inserting skinny rows in sorted > order (no batching) helps C*? This won't have any effect as each insert will be handled separately by the coordinator (or a different coordinator, even). Sorting is also very unlikely to help even if you did batch. Al

Re: Heavy one-off writes best practices

2018-02-04 Thread Julien Moumne
Thank you all for your inputs. Before trying advanced ideas, we'll first try reducing the amount of spark executors and see if export times are still acceptable. Two additional questions. Would you know if there is evidence that inserting skinny rows in sorted order (no batching) helps C*? Also