Gabriel Reid created CRUNCH-183:
-----------------------------------
Summary: Reservoir sampling functions don't take object reuse into account
Key: CRUNCH-183
URL: https://issues.apache.org/jira/browse/CRUNCH-183
Project: Crunch
Issue Type: Bug
Reporter: Gabriel Reid
ReservoirSampleFn and WRSCombineFn in o.a.c.lib.SampleUtils both hold onto references of processed
values, but don't make deep copies of them. For complex objects such as Avro objects, this
leads to incorrect results, with the same value being returned for all samples.
This can be resolved by making use of PType#getDetachedValue before storing a reference to
the object.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
|