Constantin Muraru created SOLR-6034:
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Summary: Use a wildcard in order to delete fields with Atomic
Update
Key: SOLR-6034
URL: https://issues.apache.org/jira/browse/SOLR-6034
Project: Solr
Issue Type: Improvement
Components: contrib - DataImportHandler
Affects Versions: 4.7
Reporter: Constantin Muraru
As discussed on the SOLR user group, it would a great feature to be able to
remove all fields matching a pattern, using Atomic Updates.
Example:
<add><doc>
<field name="id">100</field>
<field name="*_day_i" update="set" null="true"></field>
</doc></add>
The *_day_i should be expanded server-side and all fields matching this pattern
should be removed from the specified document.
Workaround: When removing fields from a document, we can make a query to SOLR
from the client, in order to see what fields are actually present for the
specific document. After that, we can create the XML update document to be sent
to SOLR. However, this is going to increase the number of queries to SOLR and
for large amount of documents this is going to weigh pretty much. It would be
great performance-wise and simplicity-wise to be able to provide wildcards.
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