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| <html> |
| <h2>Combine - BinaryCombineFn</h2> |
| <p>Combine is a Beam transform for combining collections of elements or values in your data. |
| When you apply a Combine transform, you must provide the function that contains the logic for |
| combining the elements or values. The combining function should be commutative and associative, |
| as the function is not necessarily invoked exactly once on all values with a given key. Because |
| the input data (including the value collection) may be distributed across multiple workers, the |
| combining function might be called multiple times to perform partial combining on subsets of |
| the value collection.</p> |
| <p>BinaryCombineFn is used for implementing combiners that are more easily expressed as binary operations.</p> |
| <p>In this task, we are going to implement the summation of BigInteger using |
| <a href="https://beam.apache.org/releases/javadoc/2.11.0/org/apache/beam/sdk/transforms/Combine.BinaryCombineFn.html"> |
| Combine.BinaryCombineFn</a>. |
| </p> |
| <br> |
| <br> |
| <div class='hint'>Extend the |
| <a href="https://beam.apache.org/releases/javadoc/2.11.0/org/apache/beam/sdk/transforms/Combine.BinaryCombineFn.html">Combine.BinaryCombineFn</a> |
| class that counts the sum of the number.</div> |
| </html> |
