jq: Filtering missing keys
· jq

Docker 1.9: Port forwarding on Mac OS X
· docker

IntelliJ 'java: cannot find JDK 1.8'
· software-development

Hadoop: HDFS - java.lang.NoSuchMethodError: org.apache.hadoop.fs.FSOutputSummer.<init>(Ljava/util/zip/Checksum;II)V
· hadoop hdfs

Spark: MatchError (of class org.apache.spark.sql.catalyst.expressions.GenericRow) spark
· spark-2

Exploring (potential) data entry errors in the Land Registry data set
· data-science-2

jq: error - Cannot iterate over null (null)
· jq

Mac OS X: Installing the PROJ.4 - Cartographic Projections Library

R: data.table - Finding the maximum row
· r-2 rstats data-table

IntelliJ 14.1.5: Unable to import maven project
· intellij java