为什么使用了累加器，仍然提示Task not serializable？

[Effpom]

自己写了一个Array[Long]的累加器，使用时提示Task not serializable
以下为出错代码：

after_filter.mapPartitions{
      part=>
        part.filter(iter=>{
          val zz=FilterFunc1(iter.asInstanceOf[InternalRow],accumulatorLong)
          val aa=iter.getLong(2).toString
          zz
        })
    }

Array[Long]累加器：

class AccumulatorLong extends AccumulatorV2[Array[Long],Array[Long]] with Serializable{
  var LongArray:Array[Long]=new Array[Long](10)
  var i:Int=0
  def add(value:Array[Long]):Unit={
    LongArray(LongArray.length)=value(0)
  }

  def contains(num:Long):Boolean={
    for(i<-0 to 9)
      {
        if(LongArray(i)==num)
          return true
      }
    false
  }
  def add(value:Long): Unit ={
    LongArray(i)=value
    i+=1
  }
  def delet(num:Long): Unit ={
    for(i<-0 to 20)
      if(LongArray(i)==num)
        LongArray(i)=0
  }
/*  override add(value:Array[Long]):Unit={

  }*/
  def getValue(i:Int):Long={
    LongArray(i)
  }
  override def isZero = {
    LongArray.isEmpty
  }
  override def copy() = {
    val newLong=new AccumulatorLong()
    LongArray.foreach(iter=>newLong.add(iter.toLong))
    newLong
  }
  override def value = {
    LongArray
  }

  override def merge(other: AccumulatorV2[Array[Long], Array[Long]]) =other match {
    case map:AccumulatorLong=>{
      other.value.foreach(x=>
        if(!this.value.contains(x))
          this.add(x)
      )
    }
    case _ =>
      throw new UnsupportedOperationException(
        s"Cannot merge ${this.getClass.getName} with ${other.getClass.getName}"
      )
  }
  def reset(): Unit ={

  }

}

望大神指点！

[Effpom]

问题已解决，只要注册相应的累加器以下就可以了。

　val accmulator=new MapAccumulator
    var accmulatortopk=new LongAccumulator
    val accumulatorLong=new MapAccumulator
    this.sparkContext.register(accmulator)
    this.sparkContext.register(accmulatortopk)
    this.sparkContext.register(accumulatorLong)