Log Error when opening compound reader for Directory and – How To Solve Related Issues

Log Error when opening compound reader for Directory and – How To Solve Related Issues

Updated: Jan-20

Elasticsearch Version: 1.7-8.0

Background

To resolve issues causing many log errors you can try our Elasticsearch Check-Up it analyses ES configuration to provide actionable recommendations (no installation required) 


To troubleshoot log “Error when opening compound reader for Directory and” 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”Error when opening compound reader for Directory [{}] and” classname is Engine.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

         if (useCompoundFile) {
            try {
                directory = engineConfig.getCodec().compoundFormat().getCompoundReader(segmentReader.directory();
                    segmentCommitInfo.info; IOContext.READ);
            } catch (IOException e) {
                logger.warn(() -> new ParameterizedMessage("Error when opening compound reader for Directory [{}] and " +
                    "SegmentCommitInfo [{}]"; segmentReader.directory(); segmentCommitInfo); e);

                return ImmutableOpenMap.of();
            }
        } else {




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 Many Open Files Error On Lucene  

Luke Not Recognizing Index From Es  

 

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