hadoop-mapreduce-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Gera Shegalov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-5613) DefaultSpeculator.statusUpdate wastes CPU for task attempt id hashing and lookups in an unused empty CHM
Date Thu, 07 Nov 2013 23:39:18 GMT
Gera Shegalov created MAPREDUCE-5613:
----------------------------------------

             Summary: DefaultSpeculator.statusUpdate wastes CPU for task attempt id hashing
and lookups in an unused empty CHM
                 Key: MAPREDUCE-5613
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5613
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: applicationmaster
            Reporter: Gera Shegalov


The only way pendingSpeculations is used:
{code}
     // If the task is already known to be speculation-bait, don't do anything   
      if (pendingSpeculations.get(task) != null) {                                
        if (pendingSpeculations.get(task).get()) {                                
          return;                                                                 
        }                                                                         
      } 
{code}



--
This message was sent by Atlassian JIRA
(v6.1#6144)

Mime
View raw message