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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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