Unable to update mappings for Date fields in order to prepare for migration from 6.x to 7.x

Elastic Stack Elasticsearch
1

Hi,
i am trying to migrate Elasticsearch from 6.x to 7.x version. "Indices" Tab in Upgrade Assistant 7.0 page in Kibana shows below warning message for most of my indices,

This index has date fields with deprecated formats: [[type: pipeline, field: Date, format: EEE MMM d HH:mm:ss yyyy Z, suggestion: 'y' year should be replaced with 'u'. Use 'y' for year-of-era.; 'Z' time zone offset/id fails when parsing 'Z' for Zulu timezone. Consider using 'X'.]

  1. i have created one temporary index name - xxxx-new with mapping format as "EEE MMM d HH:mm:ss 8yyyy Z". change here is prefixed 8 to yyyy
  2. i have tried to reindex one index-xxxx in to new index xxxx-new but reindex operation failed as

Invalid format: "Thu May 23 01:00:00 2019 -0400" is malformed at " 2019 -0400

Please suggest a solution!

Thanks,
Raja

2

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