oscon | A live coding presentation on GraphQL for OSCON | GraphQL library
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Getting Great with GraphQL - OSCON 2018.
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QUESTION
I have a function to send an email. But state is not updating for setLoading,setLoading1. Initailly both loading is set as false. The console console.log("no",loading,loading1); returns no false false and console console.log("load",loadingState) returns load false. All other functionality works correctly.
...ANSWER
Answered 2020-Aug-21 at 12:03setState is a kind of async operation but it does not return Promise so awaiting them is pointless and the code like this:
QUESTION
A friend asked me how to store raw video, frame by frame, in HBase. The typical access pattern would be to retrieve frames for a block of time. Each frame is approx. 7MB and the footage is captured at about 30 frames-per-second. A 20-minute video, for example, would take about 250GB of storage.
I saw an excellent video by Lars George, author of HBase: the definitive guide, titled HBase Schema Design: things you need to know, where he talks about storing video "chunks" (the snippet where he's talking about video starts at 1:07:12 and ends at 1:08:52), so it's seems like HBase could, potentially, be a fit for this use-case.
I created a couple of row-key options:
Scenario 0: rowkey=video ID + timestamp; frames in a single column (tall, skinny table), e.g. ...ANSWER
Answered 2017-Jun-18 at 07:28I like you approach but I would suggest to use (videoID % number_of_regions) + videoID + timestamp. This way you are not restricted to 1 min limit, but reads are consequtive and whole video is stored in same region.
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