David Smiley created LUCENE-8050:
------------------------------------
Summary: PerFieldDocValuesFormat's merge should not grab field DVF
if DocValuesType.NONE
Key: LUCENE-8050
URL: https://issues.apache.org/jira/browse/LUCENE-8050
Project: Lucene - Core
Issue Type: Improvement
Components: core/index
Affects Versions: 6.3
Reporter: David Smiley
Assignee: David Smiley
Since LUCENE-7456 (Lucene 6.3), PerFieldDocValuesFormat delegates the merge to
the actual field DVF's merge. Great, but unfortunately it will call
{{getDocValuesFormatForField}} on all fields (in FieldInfos) even those that
have no DocValues (DocValuesType.NONE). It won't ultimately actually write
anything to those DVFs but there may be some overhead and furthermore it's now
more awkward to write a subclass of PFDVF that deliberately throws an exception
from {{getDocValuesFormatForField}} for some fields.
AFAICT this appears to be a non-issue for PerFieldPostingsFormat's merge
because it's use of MultiFields filters out IndexOptions.NONE
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
