craigminihan
/ gist:b23c06afd9073ec32e0c
Last active
September 21, 2023 12:47
Build GCC 4.9.2 for C/C++ on CentOS 7
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| sudo yum install libmpc-devel mpfr-devel gmp-devel | |
| cd ~/Downloads | |
| curl ftp://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/releases/gcc-4.9.2/gcc-4.9.2.tar.bz2 -O | |
| tar xvfj gcc-4.9.2.tar.bz2 | |
| cd gcc-4.9.2 | |
| ./configure --disable-multilib --enable-languages=c,c++ | |
| make -j 4 | |
| make install |
zouzias
/ sparkDataFrameZipWithIndex.scala
Last active
October 28, 2021 14:25
Spark DataFrame zipWithIndex
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| import org.apache.spark.sql.Row | |
| import org.apache.spark.sql.types.{StructField,StructType,IntegerType, LongType} | |
| val df = sc.parallelize(Seq((1.0, 2.0), (0.0, -1.0), (3.0, 4.0), (6.0, -2.3))).toDF("x", "y") | |
| // Append "rowid" column of type Long | |
| val newSchema = StructType(df.schema.fields ++ Array(StructField("rowid", LongType, false))) | |
| // Zip on RDD level | |
| val rddWithId = df.rdd.zipWithIndex |