<commit_before>sd_section("Connecting to Spark",
    "Functions for installing Spark components and connecting to Spark clusters.",
    c("install_spark",
      "spark_connect")
)

sd_section("Reading and Writing Data",
    "Functions for reading and writing Spark data frames",
    c("load_csv",
      "load_json")
)<commit_msg>tweak static docs index<commit_after>sd_section("Connecting to Spark",
    "Functions for installing Spark components and connecting to Spark clusters.",
    c("spark_connect",
      "spark_disconnect",
      "spark_log",
      "spark_web")
)

sd_section("MLlib Interface",
    "Functions for invoking MLlib algorithms",
    c("ml_kmeans",
      "ml_linear_regression",
      "ml_logistic_regression",
      "ml_random_forest",
      "ml_pca")
)
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