[jira] [Created] (FLINK-972) Run Flink on Tez

["Stephan Ewen (JIRA)" <ji...@apache.org>]

Stephan Ewen created FLINK-972:
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             Summary: Run Flink on Tez
                 Key: FLINK-972
                 URL: https://issues.apache.org/jira/browse/FLINK-972
             Project: Flink
          Issue Type: New Feature
          Components: New Components
    Affects Versions: 0.6-incubating
            Reporter: Stephan Ewen


The current status is:

  - A prototype that explores how Tez/Flink classes can interoperate was created by Filip Haase and is at https://github.com/filiphaase/incubator-tez/tree/stratosphere-input-output-proto2

  - There is a version that runs "WordCount" in Tez, using the Flink input formats, output formats, and UDFs.


Next steps towards generic support for Flink programs are:

1) Integrate the Flink Memory Manager with Tez. This means actually defining how much memory of each container Flink may allocate for its internal algorithms. In Flink's core, we allow users to set the amount of memory, or define it relative to the heap size (with 0.7*heap_size) being used if nothing else is specified.

2) Create a version of the Flink task context (PactTaskContext) for Tez: This would allow to run the Flink runtime operators on a Tez processor.

3) Integrate Flink "ship strategies" (partitioning, replication, redistribution, etc) with the way Tez parameterizes connections.

4) Integrate the Flink Sorting/Caching with Tez. This should be simple, if the memory manager is there, these classes should work out of the box.

5) Create a component that creates the Tez DAG from a flink "OptimizedPlan". We currently have a component that creates a "Job Graph" (Flink's DAG) from an OptimizedPlan, it is the last step of the "pre-flight phase" before the job is given to the master to be scheduled. We need an equivalent component to create a Tez DAG.




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