Missing or invalid written_by ” + writtenBy + ” – 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 Error Check-Up which analyzes 2 JSON files to detect many configuration 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 ” missing or invalid written_by ” + writtenBy + ” ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index, blobstore.


Log Context

Log “missing or invalid written_by [” + writtenBy + “]”classname  is BlobStoreIndexShardSnapshot.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

} else if (physicalName == null || Strings.validFileName(physicalName) == false) {
 throw new ElasticsearchParseException("missing or invalid physical file name [" + physicalName + "]");
 } else if (length < 0) {
 throw new ElasticsearchParseException("missing or invalid file length");
 } else if (writtenBy == null) {
 throw new ElasticsearchParseException("missing or invalid written_by [" + writtenBy + "]");
 } else if (checksum == null) {
 throw new ElasticsearchParseException("missing checksum for name [" + name + "]");
 }
 return new FileInfo(name; new StoreFileMetadata(physicalName; length; checksum; writtenBy; metaHash; writerUuid); partSize);
 }

 

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