* fix race conditio * code cleaning rm pom.xml-e * clean again * fix compilation issue * recover * avoid using getOrCreate * interrupt zombie threads * safe guard * fix deadlock * Update SparkParallelismTracker.scala
* fix race conditio * code cleaning rm pom.xml-e * clean again * fix compilation issue * recover * avoid using getOrCreate * interrupt zombie threads * safe guard * fix deadlock * Update SparkParallelismTracker.scala