public void setSkippable(boolean skippable) {
    this.skippable = skippable;
  }
Set skippable for this stage.

A skippable stage can be skipped on failure so that the
remaining stages of the request can execute.
If a stage is not skippable, a failure will cause the
remaining stages of the request to be aborted.

@param skippable  true if this stage should be skippable
ambari-server/src/main/java/org/apache/ambari/server/actionmanager/Stage.java