[MAPREDUCE-5165] Create MiniMRCluster version which uses the mapreduce package.

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Tags: JobConf mapred mapreduce MiniMRCluster
• Assignee: Unassigned
• Reporter: jay vyas
• Created: 18/Apr/13 16:32
• Updated: 18/Apr/13 20:18

Description

The MiniMapRedCluster class references some older mapred.* classes (as per comments below however, there is the MiniMRYarnCluster, which may aim to replace it).

It could be recreated in the mapreduce package to use the Configuration class instead of JobConf, which would make it simpler to use and integrate with new FS implementations and test harnesses that use new Configuration (not JobConf) objects to drive tests.

This could be done many ways:

1) using inheritance or else
2) by copying the code directly

The appropriate implementation depends on wether or not

1) Is it okay for mapreduce.* classes to depend on mapred.* classes ?
2) Is the mapred MiniMRCluster implementation going to be deprecated or eliminated anytime?
3) What is the future of the JobConf class - which has been deprecated and then undeprecated ?

Note that This is all intimately linked to the role that MiniMRYarnCluster will play. Relevant classes:

.//hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/MiniMRClientCluster.java

.//hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/MiniMRClientClusterFactory.java

.//hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/MiniMRCluster.java

.//hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/MiniMRYarnClusterAdapter.java

.//hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/MiniMRYarnCluster.java