org.apache.hadoop.mapreduce.task.reduce.Shuffle$ShuffleError: error in shuffle in fetcher#2

Ask Ubuntu | Tak | 2 years ago
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    Root Cause Analysis

    1. java.io.IOException

      Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.

      at org.apache.hadoop.mapreduce.task.reduce.ShuffleScheduler.checkReducerHealth()
    2. Hadoop
      Fetcher.run
      1. org.apache.hadoop.mapreduce.task.reduce.ShuffleScheduler.checkReducerHealth(ShuffleScheduler.java:253)
      2. org.apache.hadoop.mapreduce.task.reduce.ShuffleScheduler.copyFailed(ShuffleScheduler.java:187)
      3. org.apache.hadoop.mapreduce.task.reduce.Fetcher.copyFromHost(Fetcher.java:234)
      4. org.apache.hadoop.mapreduce.task.reduce.Fetcher.run(Fetcher.java:149)
      4 frames