elasticsearch-shard can not parse an index that has been rolled over

[jasontedor]

This is because it is not loading named writeables and therefore can not parse the condition that led to the rollover:

Caused by: java.io.IOException: failed to read /home/jason/.rally/benchmarks/races/2019-07-19-06-20-40/rally-node-0/install/elasticsearch-8.0.0-SNAPSHOT/data/indices/DnVmdtIuTVuJPIt0rUblFA/_state/state-7.st
        at org.elasticsearch.gateway.MetaDataStateFormat.loadGeneration(MetaDataStateFormat.java:408)
        ... 10 more
Caused by: org.elasticsearch.common.xcontent.XContentParseException: [-1:1028] [rollover_info] failed to parse field [met_conditions]
        at org.elasticsearch.common.xcontent.ObjectParser.parseValue(ObjectParser.java:386)
        at org.elasticsearch.common.xcontent.ObjectParser.parseSub(ObjectParser.java:396)
        at org.elasticsearch.common.xcontent.ObjectParser.parse(ObjectParser.java:238)
        at org.elasticsearch.common.xcontent.ConstructingObjectParser.parse(ConstructingObjectParser.java:169)
        at org.elasticsearch.common.xcontent.ConstructingObjectParser.apply(ConstructingObjectParser.java:161)
        at org.elasticsearch.action.admin.indices.rollover.RolloverInfo.parse(RolloverInfo.java:72)
        at org.elasticsearch.cluster.metadata.IndexMetaData$Builder.fromXContent(IndexMetaData.java:1346)
        at org.elasticsearch.cluster.metadata.IndexMetaData$2.fromXContent(IndexMetaData.java:1462)
        at org.elasticsearch.cluster.metadata.IndexMetaData$2.fromXContent(IndexMetaData.java:1451)
        at org.elasticsearch.gateway.MetaDataStateFormat.read(MetaDataStateFormat.java:302)
        at org.elasticsearch.gateway.MetaDataStateFormat.loadGeneration(MetaDataStateFormat.java:404)
        ... 10 more
Caused by: org.elasticsearch.common.xcontent.XContentParseException: [-1:1028] [met_conditions] failed to parse field [max_docs]
        at org.elasticsearch.common.xcontent.ObjectParser.lambda$declareNamedObjects$6(ObjectParser.java:314)
        at org.elasticsearch.common.xcontent.ObjectParser.lambda$declareNamedObjects$7(ObjectParser.java:326)
        at org.elasticsearch.common.xcontent.ObjectParser.parseValue(ObjectParser.java:384)
        ... 20 more
Caused by: org.elasticsearch.common.xcontent.NamedObjectNotFoundException: unknown named object category [org.elasticsearch.action.admin.indices.rollover.Condition]
        at org.elasticsearch.common.xcontent.NamedXContentRegistry.parseNamedObject(NamedXContentRegistry.java:128)
        at org.elasticsearch.common.xcontent.support.AbstractXContentParser.namedObject(AbstractXContentParser.java:385)
        at org.elasticsearch.action.admin.indices.rollover.RolloverInfo.lambda$static$1(RolloverInfo.java:51)
        at org.elasticsearch.common.xcontent.ObjectParser.lambda$declareNamedObjects$6(ObjectParser.java:312)
        ... 22 more

[elasticmachine]

Pinging @elastic/es-distributed