I O exception during suggest phase – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch encounters an Input/Output problem during the suggest phase, which is used for providing autocomplete suggestions. This could be due to issues like disk space shortage, network connectivity problems, or file corruption. To resolve this, you can check if there’s enough disk space and clean up if necessary. Also, verify network connectivity between nodes and ensure files associated with Elasticsearch are not corrupted. If the issue persists, consider restarting the Elasticsearch service or, in extreme cases, rebuilding the index.

This guide will help you check for common problems that cause the log ” I/O exception during suggest phase ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search.

Log Context

Log “I/O exception during suggest phase” class name is SuggestPhase.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 context.queryResult().suggest(new Suggest(suggestions));
 } catch (IOException e) {
 throw new ElasticsearchException("I/O exception during suggest phase"; e);
 }  }


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