GitHub user cestella opened a pull request:
https://github.com/apache/metron/pull/944
METRON-1463: Adjust the groupings and shuffles in enrichment to be more
efficient
## Contributor Comments
Currently there are some deficiencies in our grouping approach in the
enrichment topology:
* We have field grouping by key in places where we need LOCAL_OR_SHUFFLE
groupings
* We have shuffle groupings in places where we need LOCAL_OR_SHUFFLE
groupings
* We have field groupings by key in places where we need field grouping by
message (specifically in the connections from the splitter to the enrichments).
* Field grouping by key, as we had before, ensured that we had fewer
cache hits as opposed to field grouping by message.
To test this, just run things up in full-dev and ensure that data continues
to flow.
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You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cestella/incubator-metron
better_grouping_in_splitjoin
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/metron/pull/944.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #944
----
commit dd8821af912071e357c42c852361292c7c2c655c
Author: cstella <cestella@...>
Date: 2018-02-27T14:28:00Z
Adjusted groupings to be local or shuffle
----
---
