Top Questions

1. Efficient way to join a cached spark dataframe with other and cache again
   6 votes

   3 answers
2. Get "java.lang.NoClassDefFoundError" when running spark project with spark-submit on multiple machines
   3 votes

   1 answers
3. Design a RESTful api for creating a resource and its related resources at once
   3 votes

   2 answers
4. How to union only those rows (from large table) with keys in left small table?
   3 votes

   2 answers
5. Spark Dataframe suddenly become very slow when I reuse the old cached data iteratively too much time
   2 votes

   2 answers