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The Dataframe API was released as an abstraction on top of the RDD, followed by the Dataset API. In Spark 1.x, the RDD was the primary application programming interface (API), but as of Spark 2.x use of the Dataset API is encouraged [3] even though the RDD API is not deprecated. [4] [5] The RDD technology still underlies the Dataset API. [6] [7]
In programming language theory, lazy evaluation, or call-by-need, [1] is an evaluation strategy which delays the evaluation of an expression until its value is needed (non-strict evaluation) and which also avoids repeated evaluations (by the use of sharing).
[4]: 114 A DataFrame is a 2-dimensional data structure of rows and columns, similar to a spreadsheet, and analogous to a Python dictionary mapping column names (keys) to Series (values), with each Series sharing an index. [4]: 115 DataFrames can be concatenated together or "merged" on columns or indices in a manner similar to joins in SQL.
In some cases, patients might be asked to do a blood test or urine test to diagnose obesity or related medical conditions. Treatment. The good news about binge eating disorder is that it is treatable.
Child Protection and Obscenity Enforcement Act warning This work, which was made after November 1, 1990 and depicts one or more actual human beings engaged in sexually explicit conduct—including but not limited to "lascivious exhibition of the genitals or pubic area of any person" (USC 18 § 2256)—has record-keeping requirements in the United States under the Child Protection and Obscenity ...
Dec 29, 2024; Cleveland, Ohio, USA; Cleveland Browns quarterback Bailey Zappe (2) throws the ball during warm ups before the game against the Miami Dolphins at Huntington Bank Field.
"Baywatch" star Nicole Eggert recalled the warning signs that she missed ahead of receiving her breast cancer diagnosis.. The 52-year-old actress was diagnosed with stage 2 cribriform carcinoma ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 15 January 2025. American businessman and entrepreneur (born 1944) Larry Ellison Ellison in 2010 Born Lawrence Joseph Ellison (1944-08-17) August 17, 1944 (age 80) New York City, U.S. Education University of Illinois, Urbana-Champaign (no degree) University of Chicago (no degree) Occupations Businessman ...