Hi,
We were running 7.9.1 but after after a machine power outage, ES did not start due to
an index created at version 5.6. And recommends downgrading to 6.x and reindex.
So I replaced with dpkg -i elasticsearch-oss-6.8.13.deb and
now I get an error message in startup :
failed to read [id:116, file:/dynga/es-iou2/elasticsearch/nodes/0/_state/node-116.st
[2020-11-04T10:41:59,031][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [iou2.uninett.no] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: ElasticsearchException[java.io.IOException: failed to read [id:116, file:/dynga/es-iou2/elasticsearch/nodes/0/_state/node-116.st]]; nested: IOException[failed to read [id:116, file:/dynga/es-iou2/elasticsearch/nodes/0/_state/node-116.st]]; nested: XContentParseException[[-1:36] [node_meta_data] unknown field [node_version], parser not found];
should I also downgrade some or all of the suppor packages to do the reindexing necessary ?
opendistro-alerting opendistro-anomaly-detection opendistro-index-management opendistro-job-scheduler opendistro-knn
opendistro-performance-analyzer opendistro-security opendistro-sql opendistroforelasticsearch