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impala cache

impala cache

New Contributor

i created table by impala,when i apend data in this file by "hadoop append",but i can not select data what i append. i must refresh data.why?

thank you very much!

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Re: impala cache

Contributor

Impala caches metadata to minimize load on the NN. We're thinking about ways to automatically detect when metadata might have changed but for now, you will need to issue refresh if the files change.

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