6.8 to 7.x - This index has date fields with deprecated formats

Elastic Stack Elasticsearch
1

Hi,

we are planing to upgrade Elasticsearch from 6.8 to 7.x.
Kibana " 7.0 Upgrade Assistant" tells us for some indices "Date field format uses patterns which may change meaning in 7.0", e.g.:

This index has date fields with deprecated formats: [[type: message, field: gl2_processing_timestamp, format: yyyy-MM-dd HH:mm:ss.SSS, suggestion: 'y' year should be replaced with 'u'. Use 'y' for year-of-era.], [type: message, field: gl2_receive_timestamp, format: yyyy-MM-dd HH:mm:ss.SSS, suggestion: 'y' year should be replaced with 'u'. Use 'y' for year-of-era.], [type: message, field: timestamp, format: yyyy-MM-dd HH:mm:ss.SSS, suggestion: 'y' year should be replaced with 'u'. Use 'y' for year-of-era.]]. Prefix your date format with '8' to use the new specifier.`

Indeed I see these formats in the index mapping and the mapping templates, but to be honest, I have no idea, who to handle this. Any help is appreciated.

Thanks in advance!
Matthias

2

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