Seems you're hitting the self-join, currently Spark SQL won't cache any
result/logical tree for further analyzing or computing for self-join. Since the
logical tree is huge, it's reasonable to take long time in generating its tree
string recursively. And I also doubt the computing can finish
Seems you're hitting the self-join, currently Spark SQL won't cache any
result/logical tree for further analyzing or computing for self-join.
Other joins don’t suffer from this problem?
Since the logical tree is huge, it's reasonable to take long time in
generating its tree string
