Unknown parameter incremental_file_count – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” unknown parameter incremental_file_count ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: blobstore and index.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “unknown parameter [incremental_file_count]”classname  is BlobStoreIndexShardSnapshot.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

private static final String INDEX_VERSION = "index_version";
 private static final String START_TIME = "start_time";
 private static final String TIME = "time";
 private static final String FILES = "files";
 // for the sake of BWC keep the actual property names as in 6.x
 // + there is a constraint in #fromXContent() that leads to ElasticsearchParseException("unknown parameter [incremental_file_count]");
 private static final String INCREMENTAL_FILE_COUNT = "number_of_files";
 private static final String INCREMENTAL_SIZE = "total_size"; 
 private static final ParseField PARSE_NAME = new ParseField(NAME);


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