Robert Kanter created MAPREDUCE-5531:
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Summary: Binary and source incompatibility in mapreduce.TaskID and
mapreduce.TaskAttemptID between branch-1 and branch-2
Key: MAPREDUCE-5531
URL: https://issues.apache.org/jira/browse/MAPREDUCE-5531
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mrv1, mrv2
Affects Versions: 2.1.1-beta
Reporter: Robert Kanter
Assignee: Robert Kanter
Priority: Blocker
{{mapreduce.TaskID}} in branch-1 has these two constructors:
{code:java}
public TaskID(JobID jobId, boolean isMap, int id)
public TaskID(String jtIdentifier, int jobId, boolean isMap, int id)
{code}
In branch-2, {{mapreduce.TaskID}} no longer has either of the above two
constructors.
Also, {{mapreduce.TaskAttemptID}} in branch-1 has this constructor:
{code:java}
public TaskAttemptID(String jtIdentifier, int jobId, boolean isMap, int taskId,
int id)
{code}
In branch-2, {{mapreduce.TaskAttemptID}} no longer his this constructor.
It looks like these constructors were probably removed because the {{boolean
isMap}} was replaced by an enum, {{TaskType}}.
This means that any code that tries to use any of those constructors will not
be binary or source compatible (in fact, the missing {{TaskAttemptID}}
constructor calls one of the missing {{TaskID}} constructors).
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