IO error creating collector – How to solve this Elasticsearch error

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IO error creating collector – How to solve this Elasticsearch error

Opster Team

March-22, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” IO error creating collector ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search, aggregations.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “IO error creating collector”classname  is BestDocsDeferringCollector.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

tdc = createTopDocsCollector(shardSize);
 currentLeafCollector = tdc.getLeafCollector(readerContext);
 setScorer(scorer);
 } catch (IOException e) {
 throw new ElasticsearchException("IO error creating collector"; e);
 }
 } 
 public void getMatches(List allDocs) {
 TopDocs topDocs = tdc.topDocs();

 

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