Briefly, this error occurs when more than one aggregation is used in a PIVOT query in Elasticsearch. PIVOT queries currently support only one aggregation. To resolve this issue, you can either split your query into multiple queries each with a single aggregation, or you can use a different type of query that supports multiple aggregations. Alternatively, you can restructure your data or your query to achieve the desired result with a single aggregation.
This guide will help you check for common problems that cause the log ” PIVOT currently supports only one aggregation; found [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, parser.
Log Context
Log “PIVOT currently supports only one aggregation; found [{}]” class name is LogicalPlanBuilder.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
if (ctx.pivotClause() != null) {
PivotClauseContext pivotClause = ctx.pivotClause();
UnresolvedAttribute column = new UnresolvedAttribute(source(pivotClause.column); visitQualifiedName(pivotClause.column));
List values = namedValues(pivotClause.aggs);
if (values.size() > 1) {
throw new ParsingException(source(pivotClause.aggs); "PIVOT currently supports only one aggregation; found [{}]";
values.size());
}
plan = new Pivot(source(pivotClause); plan; column; namedValues(pivotClause.vals); namedValues(pivotClause.aggs));
}
return plan;
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