10k rows of 40 columns. 9 tablets in total for this table. 9 number of nodes (1 tablet per node).
Ara. > On Oct 29, 2015, at 12:51 PM, Christopher <[email protected]> wrote: > > How many tablets were these batches going to? > > How much were the column updates spread across mutations? 1 mutation > per update? or grouped by row? > > 10k also seems like a very small number. I'd be curious to know where > the error bars are around that 50% value. > > -- > Christopher L Tubbs II > http://gravatar.com/ctubbsii > > > On Thu, Oct 29, 2015 at 3:30 PM, Ara Ebrahimi > <[email protected]> wrote: >> Hi, >> >> We just did a simple test: >> >> - insert 10k batches of columns >> - sort the same 10k batch based on row keys and insert >> >> So basically the batch writer in the first test has items in non-sorted >> order and in the second one in sorted order. We noticed 50% better >> performance in the sorted version! Why is that the case? Is this something >> we need to consider doing for live ingest scenarios? >> >> Thanks, >> Ara. >> >> >> >> ________________________________ >> >> This message is for the designated recipient only and may contain >> privileged, proprietary, or otherwise confidential information. If you have >> received it in error, please notify the sender immediately and delete the >> original. Any other use of the e-mail by you is prohibited. Thank you in >> advance for your cooperation. >> >> ________________________________ > > > > ________________________________ > > This message is for the designated recipient only and may contain privileged, > proprietary, or otherwise confidential information. If you have received it > in error, please notify the sender immediately and delete the original. Any > other use of the e-mail by you is prohibited. Thank you in advance for your > cooperation. > > ________________________________ ________________________________ This message is for the designated recipient only and may contain privileged, proprietary, or otherwise confidential information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the e-mail by you is prohibited. Thank you in advance for your cooperation. ________________________________
