Sunday, May 24, 2015

maven version conflict


>PROBLEM
[WARNING] Rule 0: org.apache.maven.plugins.enforcer.RequireMavenVersion failed with message:
Detected Maven Version: 3.0.4 is not in the allowed range 3.1.1.


>SOLUTION
Using an old version incompatible with the version required.
  M2_HOME=D:\portables_d\apache-maven-3.0.4

Switch the M2_HOME envvar to the new maven version:
  M2_HOME=D:\portables_d\apache-maven-3.1.1





Spark : Cancelling potential speculative or zombie tasks for this job

  >PROBLEM Running a long iteration, Spark was returning messages like these: [dag-scheduler-event-loop] INFO org.apache.spark.scheduler....