[HADOOP-3060] MiniMRCluster is ignoring parameter taskTrackerFirst

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.17.0
• Hadoop Flags: Incompatible change

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.

• Assignee: Amareshwari Sriramadasu
• Reporter: Amareshwari Sriramadasu
• Created: 20/Mar/08 07:23
• Updated: 08/Jul/09 16:52
• Resolved: 27/Mar/08 13:35

Description

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.