Failed to recover index – 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 ” Failed to recover index ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: repositories, index, blobstore.

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 “Failed to recover index”classname  is FileRestoreContext.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

} finally {
 store.decRef();
 }
 }; listener::onFailure));
 } catch (IOException ex) {
 throw new IndexShardRestoreFailedException(shardId; "Failed to recover index"; ex);
 }
 } catch (Exception e) {
 listener.onFailure(e);
 } finally {
 store.decRef();

 

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