Log Could not lock IndexWriter isLocked – How To Solve Related Issues

Log Could not lock IndexWriter isLocked – How To Solve Related Issues

Updated: Feb-20

Elasticsearch Version: 1.7-8.0


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To troubleshoot log “Could not lock IndexWriter isLocked” it’s important to understand a few problems related to Elasticsearch concepts index. See bellow important tips and explanations on these concepts

Log Context

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

            return new IndexWriter(store.directory(); iwc);
        } catch (LockObtainFailedException ex) {
            boolean isLocked = IndexWriter.isLocked(store.directory());
            logger.warn("Could not lock IndexWriter isLocked [{}]"; ex; isLocked);
            throw ex;

    /** Extended SearcherFactory that warms the segments if needed when acquiring a new searcher */

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 Could not lock IndexWriter isLocked [false]

1.08 K 2

Could Not Lock Indexwriter Islocked  


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