Fetch inner finish failed – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

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Briefly, this error occurs when Elasticsearch encounters an issue while trying to fetch data from the index. This could be due to a variety of reasons such as corrupted data, network issues, or hardware failures. To resolve this issue, you could try reindexing your data, checking your network connections, or inspecting your hardware for any potential issues. Additionally, ensure that your Elasticsearch cluster has sufficient resources and is properly configured.

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This guide will help you check for common problems that cause the log ” fetch”; “inner finish failed ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search.

Log Context

Log “fetch”; “inner finish failed” class name is SearchScrollAsyncAction.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 } catch (Exception e) {
 listener.onFailure(new ReduceSearchPhaseException("fetch"; "inner finish failed"; e; buildShardFailures()));
 }  protected void onShardFailure(
 String phaseName;


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