private void maybeRefreshEngine() {
if (indexSettings.getRefreshInterval().millis() > 0) {
for (IndexShard shard : this.shards.values()) {
switch (shard.state()) {
case CREATED:
case RECOVERING:
case CLOSED:
continue;
case POST_RECOVERY:
case STARTED:
case RELOCATED:
try {
if (shard.isRefreshNeeded()) {
shard.refresh("schedule");
}
} catch (EngineClosedException | AlreadyClosedException ex) {
// fine - continue;
}
continue;
default:
throw new IllegalStateException("unknown state: " + shard.state());
}
}
}
}
