@Override
protected ClusterStatsNodeResponse nodeOperation(ClusterStatsNodeRequest nodeRequest) {
NodeInfo nodeInfo = nodeService.info(false, true, false, true, false, true, false, true);
NodeStats nodeStats =
nodeService.stats(
CommonStatsFlags.NONE,
false,
true,
true,
false,
true,
false,
false,
false,
false,
false);
List<ShardStats> shardsStats = new ArrayList<>();
for (IndexService indexService : indicesService) {
for (IndexShard indexShard : indexService) {
if (indexShard.routingEntry() != null && indexShard.routingEntry().active()) {
// only report on fully started shards
shardsStats.add(
new ShardStats(
indexShard.routingEntry(),
indexShard.shardPath(),
new CommonStats(
indicesService.getIndicesQueryCache(), indexShard, SHARD_STATS_FLAGS),
indexShard.commitStats()));
}
}
}
ClusterHealthStatus clusterStatus = null;
if (clusterService.state().nodes().localNodeMaster()) {
clusterStatus = new ClusterStateHealth(clusterService.state()).getStatus();
}
return new ClusterStatsNodeResponse(
nodeInfo.getNode(),
clusterStatus,
nodeInfo,
nodeStats,
shardsStats.toArray(new ShardStats[shardsStats.size()]));
}
public synchronized IndexShard createShard(ShardRouting routing) throws IOException {
final boolean primary = routing.primary();
/*
* TODO: we execute this in parallel but it's a synced method. Yet, we might
* be able to serialize the execution via the cluster state in the future. for now we just
* keep it synced.
*/
if (closed.get()) {
throw new IllegalStateException("Can't create shard " + routing.shardId() + ", closed");
}
final Settings indexSettings = this.indexSettings.getSettings();
final ShardId shardId = routing.shardId();
boolean success = false;
Store store = null;
IndexShard indexShard = null;
ShardLock lock = null;
try {
lock = nodeEnv.shardLock(shardId, TimeUnit.SECONDS.toMillis(5));
eventListener.beforeIndexShardCreated(shardId, indexSettings);
ShardPath path;
try {
path = ShardPath.loadShardPath(logger, nodeEnv, shardId, this.indexSettings);
} catch (IllegalStateException ex) {
logger.warn("{} failed to load shard path, trying to remove leftover", shardId);
try {
ShardPath.deleteLeftoverShardDirectory(logger, nodeEnv, lock, this.indexSettings);
path = ShardPath.loadShardPath(logger, nodeEnv, shardId, this.indexSettings);
} catch (Exception inner) {
ex.addSuppressed(inner);
throw ex;
}
}
if (path == null) {
// TODO: we should, instead, hold a "bytes reserved" of how large we anticipate this shard
// will be, e.g. for a shard
// that's being relocated/replicated we know how large it will become once it's done
// copying:
// Count up how many shards are currently on each data path:
Map<Path, Integer> dataPathToShardCount = new HashMap<>();
for (IndexShard shard : this) {
Path dataPath = shard.shardPath().getRootStatePath();
Integer curCount = dataPathToShardCount.get(dataPath);
if (curCount == null) {
curCount = 0;
}
dataPathToShardCount.put(dataPath, curCount + 1);
}
path =
ShardPath.selectNewPathForShard(
nodeEnv,
shardId,
this.indexSettings,
routing.getExpectedShardSize() == ShardRouting.UNAVAILABLE_EXPECTED_SHARD_SIZE
? getAvgShardSizeInBytes()
: routing.getExpectedShardSize(),
dataPathToShardCount);
logger.debug("{} creating using a new path [{}]", shardId, path);
} else {
logger.debug("{} creating using an existing path [{}]", shardId, path);
}
if (shards.containsKey(shardId.id())) {
throw new IndexShardAlreadyExistsException(shardId + " already exists");
}
logger.debug("creating shard_id {}", shardId);
// if we are on a shared FS we only own the shard (ie. we can safely delete it) if we are the
// primary.
final boolean canDeleteShardContent =
IndexMetaData.isOnSharedFilesystem(indexSettings) == false
|| (primary && IndexMetaData.isOnSharedFilesystem(indexSettings));
final Engine.Warmer engineWarmer =
(searcher) -> {
IndexShard shard = getShardOrNull(shardId.getId());
if (shard != null) {
warmer.warm(searcher, shard, IndexService.this.indexSettings);
}
};
store =
new Store(
shardId,
this.indexSettings,
indexStore.newDirectoryService(path),
lock,
new StoreCloseListener(
shardId, canDeleteShardContent, () -> eventListener.onStoreClosed(shardId)));
if (useShadowEngine(primary, indexSettings)) {
indexShard =
new ShadowIndexShard(
routing,
this.indexSettings,
path,
store,
indexCache,
mapperService,
similarityService,
indexFieldData,
engineFactory,
eventListener,
searcherWrapper,
threadPool,
bigArrays,
engineWarmer,
searchOperationListeners);
// no indexing listeners - shadow engines don't index
} else {
indexShard =
new IndexShard(
routing,
this.indexSettings,
path,
store,
indexCache,
mapperService,
similarityService,
indexFieldData,
engineFactory,
eventListener,
searcherWrapper,
threadPool,
bigArrays,
engineWarmer,
searchOperationListeners,
indexingOperationListeners);
}
eventListener.indexShardStateChanged(indexShard, null, indexShard.state(), "shard created");
eventListener.afterIndexShardCreated(indexShard);
shards = newMapBuilder(shards).put(shardId.id(), indexShard).immutableMap();
success = true;
return indexShard;
} catch (ShardLockObtainFailedException e) {
throw new IOException("failed to obtain in-memory shard lock", e);
} finally {
if (success == false) {
if (lock != null) {
IOUtils.closeWhileHandlingException(lock);
}
closeShard("initialization failed", shardId, indexShard, store, eventListener);
}
}
}