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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3060) MiniMRCluster is ignoring parameter taskTrackerFirst
Date Thu, 17 Apr 2008 08:45:21 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amareshwari Sriramadasu updated HADOOP-3060:
--------------------------------------------

    Release Note: 
The parameter boolean taskTrackerFirst is removed from org.apache.hadoop.mapred.MiniMRCluster
constructors.
Thus signature of following APIs
  public MiniMRCluster(int jobTrackerPort, int taskTrackerPort, int numTaskTrackers, String
namenode, boolean taskTrackerFirst, int numDir)
  public MiniMRCluster(int jobTrackerPort, int taskTrackerPort, int numTaskTrackers, String
namenode, boolean taskTrackerFirst, int numDir, String[] racks)
  public MiniMRCluster(int jobTrackerPort, int taskTrackerPort, int numTaskTrackers, String
namenode, boolean taskTrackerFirst, int numDir, String[] racks, String[] hosts)
  public MiniMRCluster(int jobTrackerPort, int taskTrackerPort, int numTaskTrackers, String
namenode, boolean taskTrackerFirst, int numDir, String[] racks, String[] hosts, UnixUserGroupInformation
ugi )
is changed to
  public MiniMRCluster(int jobTrackerPort, int taskTrackerPort, int numTaskTrackers, String
namenode, int numDir)
  public MiniMRCluster(int jobTrackerPort, int taskTrackerPort, int numTaskTrackers, String
namenode, int numDir, String[] racks)
  public MiniMRCluster(int jobTrackerPort, int taskTrackerPort, int numTaskTrackers, String
namenode, int numDir, String[] racks, String[] hosts)
  public MiniMRCluster(int jobTrackerPort, int taskTrackerPort, int numTaskTrackers, String
namenode, int numDir, String[] racks, String[] hosts, UnixUserGroupInformation ugi )
respectively.
Since the old signatures were not deprecated, any code using the old constructors must be
changed to use the new constructors.
    Hadoop Flags: [Incompatible change]

> MiniMRCluster is ignoring parameter taskTrackerFirst 
> -----------------------------------------------------
>
>                 Key: HADOOP-3060
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3060
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.17.0
>
>         Attachments: patch-3060.txt, patch-3060.txt
>
>
> Looks like MiniMRCluster is ignoring the parameter taskTrackerFirst. 
> With current code, MiniMRCluster starts jobtracker first, and then starts tasktracker
irrespective of taskTrackerFirst parameter.
> Mapred either has to remove the parameter or provide taskTracker starting first functionality.

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