我遇到以下异常，当我尝试更新某些记录时，我以前从未在ES中看到过此异常，请帮忙：
2016-05-15 20:27:04][INFO ][rest.suppressed] /index1/aprelease/1122/_update Params:
{id=aa22, index=index1, type=aprelease}
RemoteTransportException[[test-es15-a][indices:data/write/update[s]]];
nested: EngineException[Couldn't resolve version]; nested:
NotSerializableExceptionWrapper[Input/output error:
NIOFSIndexInput(path="/data/node-a/data/ts-data/nodes/0/indices/index1/18/index/_ypk3.cfs")
[slice=_ypk3_Lucene50_0.tim]];
nested: NotSerializableExceptionWrapper[Input/output error];
Caused by: [index1][[index1][18]] EngineException[Couldn't resolve version];
nested: NotSerializableExceptionWrapper[Input/output error:
NIOFSIndexInput(path="/data/node-a/data/ts-data/nodes/0/indices/index1/18/index/_ypk3.cfs")
[slice=_ypk3_Lucene50_0.tim]]; nested: NotSerializableExceptionWrapper[Input/output error];
at org.elasticsearch.index.engine.Engine.getFromSearcher(Engine.java:256)
at org.elasticsearch.index.engine.InternalEngine.get(InternalEngine.java:349)
at org.elasticsearch.index.shard.IndexShard.get(IndexShard.java:606)
at org.elasticsearch.index.get.ShardGetService.innerGet(ShardGetService.java:173)
at org.elasticsearch.index.get.ShardGetService.get(ShardGetService.java:86)
at org.elasticsearch.action.update.UpdateHelper.prepare(UpdateHelper.java:76)
at org.elasticsearch.action.update.TransportUpdateAction.shardOperation(TransportUpdateAction.java:170)
at org.elasticsearch.action.update.TransportUpdateAction.shardOperation(TransportUpdateAction.java:164)
at org.elasticsearch.action.update.TransportUpdateAction.shardOperation(TransportUpdateAction.java:65)
at ....
根据Per Val的建议，我运行了以下命令并得到以下结果：
curl -XGET 'http://192.168.0.1:9200/index1/_upgrade?pretty&human'
{
"size" : "408.4gb",
"size_in_bytes" : 438558561139,
"size_to_upgrade" : "0b",
"size_to_upgrade_in_bytes" : 0,
"size_to_upgrade_ancient" : "0b",
"size_to_upgrade_ancient_in_bytes" : 0,
"indices" : {
"index1" : {
"size" : "408.4gb",
"size_in_bytes" : 438558561139,
"size_to_upgrade" : "0b",
"size_to_upgrade_in_bytes" : 0,
"size_to_upgrade_ancient" : "0b",
"size_to_upgrade_ancient_in_bytes" : 0
}
}
}