I am submitting a Spark Job using below command. I want to tail the yarn log using application Id similar to tail command operation in Linux box. export SPARK
I am going through Spark Programming guide that says: Broadcast variables allow the programmer to keep a read-only variable cached on each machine rather th
I am having a pyspark dataframe as DOCTOR | PATIENT JOHN | SAM JOHN | PETER JOHN | ROBIN BEN | ROSE BEN | GRAY and need to concatenate patient n
I'm running both the master and 1 worker on a GPU server in standalone mode. After submitting the job, it retrieves and loses executors for X amount of times be
I have a large data set which I am reading from Postgres. It has an ID column, a timestamp column and several other columns which may have been updated. For eac
I have a column of type map, where the key and value changes. I am trying to extract the value and create a new column. Input: ----------------+ |symbols
I'm new to SPARK-SQL. Is there an equivalent to "CASE WHEN 'CONDITION' THEN 0 ELSE 1 END" in SPARK SQL ? select case when 1=1 then 1 else 0 end from table Tha
My database has numeric value, which is up to 256-bit unsigned integer. However, spark's decimalType has a limit of Decimal(38,18). When I try to do calculatio
I am getting two types of errors in running a job on Google dataproc and it is causing executors to be lost one by one until the last executor is lost and the j
Do I need to use Spark with YARN to achieve NODE LOCAL data locality with HDFS? If I use Spark standalone cluster manager and have my data distributed in HDFS c
This is my first time using PySpark. I am using a Mac and I am trying to start up a session within Jupiter Notebook using the code below: import pyspark from py
I have been working on this problem for two days and still have not find the way. Problem: Our Spark installed via newest CDH 5 always complains about the lost
I was trying to find a good answer for why the default persist for RDD is MEMORY_ONLY whereas for Dataset it is MEMORY_AND_DISK. But I couldn't find it. Does an
I could sound naive asking this question but this is a problem that I have recently faced in my project. Need some better understanding on it. df.persist(Stora
I am am trying to monitor some logic in a udf using counters. i.e. counter = Counter(...).labels("value") @ufd def do_smthng(col): if col: counter.label(
I'm new to spark. I'm trying to run a spark job that loads data to elasticsearch. I've built a fat jar from my code and used it during spark-submit. spark-subm
I have a dataframe with a yearweek column that I want to convert to a date. The code I wrote seems to work for every week except for week '202001' and '202053',
I have a dataframe like this: JoiKey period Age Amount Jk1 2022-02 2 200 Jk1 2022-02 3 450 Jk2 2022-03 5 500 Jk3 2022-03 0 200 Jk2 2022-02 8 300 Jk3 2022-03 9
I'm trying to convert Pandas DF into Spark one. DF head: 10000001,1,0,1,12:35,OK,10002,1,0,9,f,NA,24,24,0,3,9,0,0,1,1,0,0,4,543 10000001,2,0,1,12:36,OK,10002,1
I've written a very simple Sort scala program with Spark. object Sort { def main(args: Array[String]): Unit = { if (args.length < 2) {