Github user JoshRosen commented on the pull request:
https://github.com/apache/spark/pull/7904#issuecomment-128885925
Spotted the bug: I forgot to reset an index when rolling over to the next
left row. This implies that our existing join unit tests aren't adequately
testing the operators with more than one input key per partition; we need to
either force a lower degree of parallelism (e.g. a single input partition) or
use much more data so that we guarantee > 1 key per partition. The approach of
forcing the input partitioning is what motivated my exchange refactoring patch,
which I plan to pick up tonight.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
