[jira] [Created] (PIG-3767) Work with TEZ-668 which allows starting and closing of inputs and outputs

["Rohini Palaniswamy (JIRA)" <ji...@apache.org>]

Rohini Palaniswamy created PIG-3767:
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             Summary: Work with TEZ-668 which allows starting and closing of inputs and outputs
                 Key: PIG-3767
                 URL: https://issues.apache.org/jira/browse/PIG-3767
             Project: Pig
          Issue Type: Sub-task
            Reporter: Rohini Palaniswamy
            Assignee: Rohini Palaniswamy
             Fix For: tez-branch


>From [~bikassaha]:

https://issues.apache.org/jira/browse/TEZ-668 is a breaking change in TEZ trunk
 
This adds a start method to the Input/Output and the processor is expected to call input.start()/output.start() for the input/output to actually start fetching/writing data. After this get committed, Hive and Pig Processors need to call start() on the input/output that they want to start. The processors may decide to not call start for an input they do not want to read (e.g. data already in ObjectRegistry) or they may choose to stagger the inputs in a certain order based on memory or processing requirements.



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