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public interface ExecPhysicalPlan
Method Summary | |
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void |
explain(OutputStream out)
To provide an "explanation" about how the physical plan has been constructed |
Properties |
getConfiguration()
A job may have properties, like a priority, degree of parallelism... |
Map<OperatorKey,ExecPhysicalOperator> |
getOpTable()
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OperatorKey |
getRoot()
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void |
updateConfiguration(Properties configuration)
Some properties of the job may be changed, say the priority... |
Method Detail |
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Properties getConfiguration()
void updateConfiguration(Properties configuration) throws ExecException
configuration
-
some
- changes may not be allowed, for instance the some
job-level properties cannot override Execution-Engine-level properties
or maybe some properties can only be changes only in certain states of the
job, say, once the job is started, parallelism level may not be changed...
ExecException
void explain(OutputStream out)
Map<OperatorKey,ExecPhysicalOperator> getOpTable()
OperatorKey getRoot()
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