Failed to create engine – How to solve this OpenSearch exception

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch fails to create a new engine, which is essential for indexing and searching data. This could be due to insufficient disk space, corrupted indices, or configuration issues. To resolve this, you can try freeing up disk space, checking and repairing corrupted indices, or reviewing your OpenSearch configuration for any inconsistencies or errors. Additionally, ensure that your system resources are sufficient for OpenSearch operations.

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This guide will help you check for common problems that cause the log ” failed to create engine ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: index.

Log Context

Log “failed to create engine” class name is We extracted the following from OpenSearch source code for those seeking an in-depth context :

 this.translogManager = translogManagerRef;
 } catch (IOException e) {
 IOUtils.closeWhileHandlingException(store::decRef; readerManager; translogManagerRef);
 throw new EngineCreationFailureException(shardId; "failed to create engine"; e);
 }  private NRTReplicationReaderManager buildReaderManager() throws IOException {
 return new NRTReplicationReaderManager(


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