Unknown parameter incremental_file_count – How to solve this Elasticsearch error

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 Error 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. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the 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 which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

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);


Run the Check-Up to get a customized report like this:

Analyze your cluster