I was running on elasticsearch 2.3.1, but I had to upgrade to 5.6.4 (because of kibana), but Elasticsearch won't start anymore.
This is log from Elasticsearch:
java.lang.IllegalStateException: The index [[cyclone3.mysite_sk/Qf5ccdWNRYKFGs4lBffSAQ]] was created with version [1.2.1] but the minimum compatible version is [2.0.0-beta1]. It should be re-indexed in Elasticsearch 2.x before upgrading to 5.6.4.
And lot of the same errors.
Yes I understand that I need to reindex, but how? And does I lose all data?
Apache, Apache Lucene, Apache Hadoop, Hadoop, HDFS and the yellow elephant
logo are trademarks of the
Apache Software Foundation
in the United States and/or other countries.