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https://issues.apache.org/jira/browse/CALCITE-5974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17790057#comment-17790057
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zhaowang commented on CALCITE-5974:
-----------------------------------
[~libenchao] I think Wang Zhao would be better.
> Elasticsearch adapter throws ClassCastException when index mapping sets
> dynamic_templates without properties
> ------------------------------------------------------------------------------------------------------------
>
> Key: CALCITE-5974
> URL: https://issues.apache.org/jira/browse/CALCITE-5974
> Project: Calcite
> Issue Type: Bug
> Affects Versions: 1.35.0
> Reporter: zhaowang
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.36.0
>
>
> When we use the elasticsearch-adapter, as we config an elasticsearch cluster,
> it will fetchMapping during initialization.
> If a index set dynamic_templates bug no mappings like this:
>
> {code:java}
> {
> "test_index" : {
> "mappings" : {
> "dynamic_templates" : [
> {
> "integers" : {
> "match_mapping_type" : "long",
> "mapping" : {
> "type" : "integer"
> }
> }
> }
> ]
> }
> }
> } {code}
> {{org.apache.calcite.adapter.elasticsearch.ElasticsearchJson#visitMappingProperties}}
> throw exception:
>
> {code:java}
> java.lang.ClassCastException:
> com.fasterxml.jackson.databind.node.ArrayNode cannot be cast to
> com.fasterxml.jackson.databind.node.ObjectNode
> at
>
> org.apache.calcite.adapter.elasticsearch.ElasticsearchJson.visitMappingProperties(ElasticsearchJson.java:133)
> {code}
> So ElasticsearchTransport initialize failed, all index of this es cluster
> access failed.
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