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RF3 -> RF4 to improve impala read performance

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RF3 -> RF4 to improve impala read performance

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Hello --

 

Our cluster is used primarily for ad-hoc read-only queries using impala, with many daily users. 

We currently have 12 DNs, 8 cores per DN, 8 disks per DN. 

 

Can anyone speak to moving to RF 4 to improve impala read performance? Is this a crazy idea?

 

Thanks,

 

Jeff