Log Key . date . doc_count – How To Solve Related Issues

Log Key . date . doc_count – How To Solve Related Issues

Opster Team

Feb-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 causing many log errors (free and no installation required)


This guide will help you check for common problems that cause the log “Key . date . doc_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: aggregations.

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 discover the cause of many errors and provides suitable actionable recommendations. 

Log Context

Log”key [{}]; date [{}]; doc_count [{}]” classname is datehistogram-aggregation.asciidoc
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 for (DateHistogram.Bucket entry : agg.getBuckets()) {
    String key = entry.getKey();                // Key
    DateTime keyAsDate = entry.getKeyAsDate();  // Key as date
    long docCount = entry.getDocCount();        // Doc count

    logger.info("key [{}]; date [{}]; doc_count [{}]"; key; keyAsDate.getYear(); docCount);

This will basically produce for the first example:


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 Elasticsearch Get only those date histograms whose bucket size is greater than given number -views 0.18 K ,score 1

Date Histogram And Derivative On Do  


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