Support Questions

aloha · ‎01-09-2016

I have orc.stripe.size=67108864

What size of stripe would be for small orc file (for example 2 Mb, 350K records)?

I thought that in this case file contains 1 stripe with size 2Mb. However in orcfiledump I see 426 stripes! Why?

bleonhardi · ‎01-13-2016

That is very curious I have seen lots of stripes being created because of memory problems. But normally he only gets down to 5000 rows and then out of memory.

Which version of Hive are you using? What are your memory settings for the hive tasks and if the file is small is it possible that the table is partitioned and the task is writing into a large number of partitions at the same time?

Can you share the LOAD command and the table layout?

View solution in original post

subhashreddy · ‎04-19-2017

Thanks Benjamin Leonhardi J,

Your slide 16 saved my day...

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ORC Stripe size