DataStax Academy FAQ

DataStax Academy migrated to a new learning management system (LMS) in July 2020. We are also moving to a new Cassandra Certification process so there are changes to exam bookings, voucher system and issuing of certificates.

Check out the Academy FAQ pages for answers to your questions:


question

gmldba_107428 avatar image
gmldba_107428 asked ·

What is cell count on nodetool tablehistograms?

Is cell count the number of records in the table?

Is this an average?

How is it calculated?

nodetool
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1 Answer

Erick Ramirez avatar image
Erick Ramirez answered ·

{ {Cell count}} is the estimated number of columns in each percentile for a table that was recorded for reads and writes in the last 15 minutes. The estimate is calculated based on the standard deviation from the mean number of columns read/written in the last 15 minutes. Cheers!

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