@Override
public TerminationHandle warmReader(
final IndexShard indexShard, final Engine.Searcher searcher) {
final MapperService mapperService = indexShard.mapperService();
final Map<String, MappedFieldType> warmUpGlobalOrdinals = new HashMap<>();
for (DocumentMapper docMapper : mapperService.docMappers(false)) {
for (FieldMapper fieldMapper : docMapper.mappers()) {
final MappedFieldType fieldType = fieldMapper.fieldType();
final String indexName = fieldType.name();
if (fieldType.eagerGlobalOrdinals() == false) {
continue;
}
warmUpGlobalOrdinals.put(indexName, fieldType);
}
}
final IndexFieldDataService indexFieldDataService = indexShard.indexFieldDataService();
final CountDownLatch latch = new CountDownLatch(warmUpGlobalOrdinals.size());
for (final MappedFieldType fieldType : warmUpGlobalOrdinals.values()) {
executor.execute(
() -> {
try {
final long start = System.nanoTime();
IndexFieldData.Global ifd = indexFieldDataService.getForField(fieldType);
DirectoryReader reader = searcher.getDirectoryReader();
IndexFieldData<?> global = ifd.loadGlobal(reader);
if (reader.leaves().isEmpty() == false) {
global.load(reader.leaves().get(0));
}
if (indexShard.warmerService().logger().isTraceEnabled()) {
indexShard
.warmerService()
.logger()
.trace(
"warmed global ordinals for [{}], took [{}]",
fieldType.name(),
TimeValue.timeValueNanos(System.nanoTime() - start));
}
} catch (Exception e) {
indexShard
.warmerService()
.logger()
.warn("failed to warm-up global ordinals for [{}]", e, fieldType.name());
} finally {
latch.countDown();
}
});
}
return () -> latch.await();
}
void warm(Engine.Searcher searcher, IndexShard shard, IndexSettings settings) {
if (shard.state() == IndexShardState.CLOSED) {
return;
}
if (settings.isWarmerEnabled() == false) {
return;
}
if (logger.isTraceEnabled()) {
logger.trace("{} top warming [{}]", shard.shardId(), searcher.reader());
}
shard.warmerService().onPreWarm();
long time = System.nanoTime();
final List<TerminationHandle> terminationHandles = new ArrayList<>();
// get a handle on pending tasks
for (final Listener listener : listeners) {
terminationHandles.add(listener.warmReader(shard, searcher));
}
// wait for termination
for (TerminationHandle terminationHandle : terminationHandles) {
try {
terminationHandle.awaitTermination();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
logger.warn("top warming has been interrupted", e);
break;
}
}
long took = System.nanoTime() - time;
shard.warmerService().onPostWarm(took);
if (shard.warmerService().logger().isTraceEnabled()) {
shard
.warmerService()
.logger()
.trace("top warming took [{}]", new TimeValue(took, TimeUnit.NANOSECONDS));
}
}