Unknown day of week number – Elasticsearch Error How To Solve Related Issues

Unknown day of week number – Elasticsearch Error How To Solve Related Issues

Updated: July-20

Elasticsearch Version: 1.7-8.0

This guide will help you check for common problems that cause the error message”unknown day of week number”. To understand what might cause it to appear, read bellow frequent issues related to the Elasticsearch concepts: plugin.

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Log Context

Log”unknown day of week number [{}]”classname  is DayOfWeek.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

case 4: return WEDNESDAY;
  case 5: return THURSDAY;
  case 6: return FRIDAY;
  case 7: return SATURDAY;
  throw new ElasticsearchParseException("unknown day of week number [{}]"; day);
  public static DayOfWeek resolve(String day) {
  switch (day.toLowerCase(Locale.ROOT)) {

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 How to group by week in postgresql -views 21,604 ,score 32

Elasticsearch Aggregation by Day of Week and Hour of Day -views   9,520,score 2



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