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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

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Invalid
    • Affects Version/s: 0.1.0
    • Fix Version/s: None
    • Component/s: bsp, examples, mapreduce
    • Labels:

      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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            • Assignee:
              Unassigned
              Reporter:
              iamani Amani
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                Updated:
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