Hi,
I have a key-value RDD called rdd below. After a groupBy, I tried to count
rows.
But the result is not unique, somehow non deterministic.
Here is the test code:
val step1 = ligneReceipt_cleTable.persist
val step2 = step1.groupByKey
val s1size = step1.count
val s2size = step2.count
val t = step2 // rdd after groupBy
val t1 = t.count
val t2 = t.count
val t3 = t.count
val t4 = t.count
val t5 = t.count
val t6 = t.count
val t7 = t.count
val t8 = t.count
println("s1size = " + s1size)
println("s2size = " + s2size)
println("1 => " + t1)
println("2 => " + t2)
println("3 => " + t3)
println("4 => " + t4)
println("5 => " + t5)
println("6 => " + t6)
println("7 => " + t7)
println("8 => " + t8)
Here are the results:
s1size = 5338864
s2size = 5268001
1 => 5268002
2 => 5268001
3 => 5268001
4 => 5268002
5 => 5268001
6 => 5268002
7 => 5268002
8 => 5268001
Even if the difference is just one row, that's annoying.
Any idea ?
Thank you.
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