[
https://issues.apache.org/jira/browse/SPARK-58177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yicong Huang updated SPARK-58177:
---------------------------------
Affects Version/s: 4.3.0
(was: 5.0.0)
> Fix wrong operand in SVD++ aggregateMessages combiner
> -----------------------------------------------------
>
> Key: SPARK-58177
> URL: https://issues.apache.org/jira/browse/SPARK-58177
> Project: Spark
> Issue Type: Bug
> Components: GraphX
> Affects Versions: 4.3.0
> Reporter: Matthew Ball
> Priority: Major
> Labels: pull-request-available
>
> When SVD++ combines two updates for the same node, it is supposed to add them
> together. For one of the values, the code started from the wrong update, so
> that value was never actually added up: it doubled one side and threw the
> other away. Any node with two or more edges ended up with the wrong value.
> The matching code just below already does it the right way (adds the two
> updates), which shows this was a typo.
> The fix is a single line: start from the first update instead of the second.
> This is the same kind of one-line correctness fix as SPARK-6710.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
