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https://issues.apache.org/jira/browse/SOLR-14950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17244412#comment-17244412
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Munendra S N commented on SOLR-14950:
-------------------------------------
During regeneration of copyFields, only fields map is used to fetch SchemaField
but in the give copyField, source might match dynamic rule.
[~aeshumway] could you please the above PR and let me know if that fixes your
issue?
> schema api sometimes fails to replace-field-type
> ------------------------------------------------
>
> Key: SOLR-14950
> URL: https://issues.apache.org/jira/browse/SOLR-14950
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Schema and Analysis
> Affects Versions: 8.4.1
> Reporter: Andrew Shumway
> Assignee: Munendra S N
> Priority: Minor
> Labels: schema
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When updating a schema via POST to {{/solr/COLLECTION/schema}} using
> {{replace-field-type}} , the call fails if the schema has existing
> copy-fields whose destination references a non-dynamic field of the
> {{field-type}} which is being updated.
>
> Example steps: # on a blank schema, add a field type and copy-field by POSTing
> {
> "add-field-type": [
> {
> "name": "spellcheck", "class": "solr.TextField","positionIncrementGap":
> "100",
> "analyzer": {
> "tokenizer": {
> "class": "solr.StandardTokenizerFactory"
> }
> }
> }
> ],
> "add-field": [
> {
> "name": "spellcheck", "type": "spellcheck",
> "multiValued": true, "indexed": true, "stored": true
> }
> ],
> "add-copy-field": [
> {
> "source": "important_data_s",
> "dest": "spellcheck"
> }
> ]
> }
> 2. Later, send an update for the field type
> {
> "replace-field-type": [
> {
> "name": "spellcheck", "class": "solr.TextField","positionIncrementGap":
> "100",
> "analyzer": {
> "tokenizer": {
> "class": "solr.StandardTokenizerFactory"
> }
> }
> }
> ]
> }
> This results in {{"errorMessages":["Source or Destination SchemaField can't
> be NULL.\n"]}],}}The error does not trigger if, as mentioned above, the
> destination of the existing copy-field is dynamic OR if the source field
> mapping contains a wildcard e.g. {{*foo_s}} (edited)
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