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  1. Giraph
  2. GIRAPH-234

Error: GC overhead limit exceeded. Child Error org.apache.hadoop.mapred.TaskRunner.run

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Invalid
    • 0.1.0
    • None
    • bsp, examples, mapreduce

    Description

      Hello everyone,

      I'm trying to run pregel style implementation of strongly connected components algorithm on top of giraph. A user defined writable (LongPairWritable) used as the type of the messages between the vertices. The algorithm works well in single node. However, whenever I tested using large graph (around 1 million vertices) in cluster, a GC overhead limit exceeded caused by out of memory exception. The error comes after attempt=0 super-step=1 with 2 minutes pending. I'm wondering how to solve the problem and what causes it?

      Is it possible that LongPairWritable cause the problem?
      I tried a simple test:
      Succeeded job:
      Comput(Iterator<LongPairWritable> msgIterator){
      If(getSuperstep() >=20){
      voteToHalt();
      } else {
      //Do nothing
      }
      }

      Failed job:
      Comput(Iterator<LongPairWritable> msgIterator){
      If(getSuperstep() >=20){
      voteToHalt();
      } else {
      sendToAll(new LongPairWritable(new LongWritable(0),new LongWritable(0));
      }
      }

      Thanks in advance.

      Amani

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            Unassigned Unassigned
            iamani Amani
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              Updated:
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