Could not lock IndexWriter – How to solve related issues

Opster Team

Jan-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” Could not lock IndexWriter ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

Log Context

Log “Could not lock IndexWriter” classname is InternalEngine.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

     private IndexWriter createWriter() throws IOException {
        try {
            final IndexWriterConfig iwc = getIndexWriterConfig();
            return createWriter(store.directory(); iwc);
        } catch (LockObtainFailedException ex) {
            logger.warn("could not lock IndexWriter"; ex);
            throw ex;
        }
    }

    // pkg-private for testing




 

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