public Builder(IndexMetaData indexMetaData) {
this(indexMetaData.index());
settings(indexMetaData.settings());
mappings.putAll(indexMetaData.mappings);
aliases.putAll(indexMetaData.aliases);
customs.putAll(indexMetaData.customs);
this.state = indexMetaData.state;
this.version = indexMetaData.version;
}
public static void toXContent(
IndexMetaData indexMetaData, XContentBuilder builder, ToXContent.Params params)
throws IOException {
builder.startObject(indexMetaData.index(), XContentBuilder.FieldCaseConversion.NONE);
builder.field("version", indexMetaData.version());
builder.field("state", indexMetaData.state().toString().toLowerCase(Locale.ENGLISH));
boolean binary = params.paramAsBoolean("binary", false);
builder.startObject("settings");
for (Map.Entry<String, String> entry : indexMetaData.settings().getAsMap().entrySet()) {
builder.field(entry.getKey(), entry.getValue());
}
builder.endObject();
builder.startArray("mappings");
for (Map.Entry<String, MappingMetaData> entry : indexMetaData.mappings().entrySet()) {
if (binary) {
builder.value(entry.getValue().source().compressed());
} else {
byte[] data = entry.getValue().source().uncompressed();
XContentParser parser = XContentFactory.xContent(data).createParser(data);
Map<String, Object> mapping = parser.mapOrdered();
parser.close();
builder.map(mapping);
}
}
builder.endArray();
for (Map.Entry<String, Custom> entry : indexMetaData.customs().entrySet()) {
builder.startObject(entry.getKey(), XContentBuilder.FieldCaseConversion.NONE);
lookupFactorySafe(entry.getKey()).toXContent(entry.getValue(), builder, params);
builder.endObject();
}
builder.startObject("aliases");
for (AliasMetaData alias : indexMetaData.aliases().values()) {
AliasMetaData.Builder.toXContent(alias, builder, params);
}
builder.endObject();
builder.endObject();
}
public static void writeTo(IndexMetaData indexMetaData, StreamOutput out) throws IOException {
out.writeUTF(indexMetaData.index());
out.writeLong(indexMetaData.version());
out.writeByte(indexMetaData.state().id());
writeSettingsToStream(indexMetaData.settings(), out);
out.writeVInt(indexMetaData.mappings().size());
for (MappingMetaData mappingMd : indexMetaData.mappings().values()) {
MappingMetaData.writeTo(mappingMd, out);
}
out.writeVInt(indexMetaData.aliases().size());
for (AliasMetaData aliasMd : indexMetaData.aliases().values()) {
AliasMetaData.Builder.writeTo(aliasMd, out);
}
out.writeVInt(indexMetaData.customs().size());
for (Map.Entry<String, Custom> entry : indexMetaData.customs().entrySet()) {
out.writeUTF(entry.getKey());
lookupFactorySafe(entry.getKey()).writeTo(entry.getValue(), out);
}
}
/** Can the shard request be cached at all? */
public boolean canCache(ShardSearchRequest request, SearchContext context) {
// TODO: for now, template is not supported, though we could use the generated bytes as the key
if (hasLength(request.templateSource())) {
return false;
}
// for now, only enable it for requests with no hits
if (context.size() != 0) {
return false;
}
// We cannot cache with DFS because results depend not only on the content of the index but also
// on the overridden statistics. So if you ran two queries on the same index with different
// stats
// (because an other shard was updated) you would get wrong results because of the scores
// (think about top_hits aggs or scripts using the score)
if (!CACHEABLE_SEARCH_TYPES.contains(context.searchType())) {
return false;
}
IndexMetaData index = clusterService.state().getMetaData().index(request.index());
if (index == null) { // in case we didn't yet have the cluster state, or it just got deleted
return false;
}
// if not explicitly set in the request, use the index setting, if not, use the request
if (request.requestCache() == null) {
if (!isCacheEnabled(index.settings(), Boolean.FALSE)) {
return false;
}
} else if (!request.requestCache()) {
return false;
}
// if the reader is not a directory reader, we can't get the version from it
if (!(context.searcher().getIndexReader() instanceof DirectoryReader)) {
return false;
}
// if now in millis is used (or in the future, a more generic "isDeterministic" flag
// then we can't cache based on "now" key within the search request, as it is not deterministic
if (context.nowInMillisUsed()) {
return false;
}
return true;
}
private void applyDeletedIndices(final ClusterChangedEvent event) {
final ClusterState previousState = event.previousState();
final String localNodeId = event.state().nodes().localNodeId();
assert localNodeId != null;
for (IndexService indexService : indicesService) {
IndexMetaData indexMetaData = event.state().metaData().index(indexService.index().name());
if (indexMetaData != null) {
if (!indexMetaData.isSameUUID(indexService.indexUUID())) {
logger.debug(
"[{}] mismatch on index UUIDs between cluster state and local state, cleaning the index so it will be recreated",
indexMetaData.index());
deleteIndex(
indexMetaData.index(),
"mismatch on index UUIDs between cluster state and local state, cleaning the index so it will be recreated");
}
}
}
for (String index : event.indicesDeleted()) {
if (logger.isDebugEnabled()) {
logger.debug("[{}] cleaning index, no longer part of the metadata", index);
}
final Settings indexSettings;
final IndexService idxService = indicesService.indexService(index);
if (idxService != null) {
indexSettings = idxService.getIndexSettings();
deleteIndex(index, "index no longer part of the metadata");
} else {
final IndexMetaData metaData = previousState.metaData().index(index);
assert metaData != null;
indexSettings = metaData.settings();
indicesService.deleteClosedIndex(
"closed index no longer part of the metadata", metaData, event.state());
}
try {
nodeIndexDeletedAction.nodeIndexDeleted(event.state(), index, indexSettings, localNodeId);
} catch (Throwable e) {
logger.debug("failed to send to master index {} deleted event", e, index);
}
}
}
private void applySettings(ClusterChangedEvent event) {
if (!event.metaDataChanged()) {
return;
}
for (IndexMetaData indexMetaData : event.state().metaData()) {
if (!indicesService.hasIndex(indexMetaData.index())) {
// we only create / update here
continue;
}
// if the index meta data didn't change, no need check for refreshed settings
if (!event.indexMetaDataChanged(indexMetaData)) {
continue;
}
String index = indexMetaData.index();
IndexService indexService = indicesService.indexService(index);
if (indexService == null) {
// already deleted on us, ignore it
continue;
}
IndexSettingsService indexSettingsService =
indexService.injector().getInstance(IndexSettingsService.class);
indexSettingsService.refreshSettings(indexMetaData.settings());
}
}
private void applyNewIndices(final ClusterChangedEvent event) {
// we only create indices for shards that are allocated
RoutingNodes.RoutingNodeIterator routingNode =
event.state().readOnlyRoutingNodes().routingNodeIter(event.state().nodes().localNodeId());
if (routingNode == null) {
return;
}
for (ShardRouting shard : routingNode) {
if (!indicesService.hasIndex(shard.index())) {
final IndexMetaData indexMetaData = event.state().metaData().index(shard.index());
if (logger.isDebugEnabled()) {
logger.debug("[{}] creating index", indexMetaData.index());
}
try {
indicesService.createIndex(
indexMetaData.index(),
indexMetaData.settings(),
event.state().nodes().localNode().id());
} catch (Throwable e) {
sendFailShard(shard, indexMetaData.getIndexUUID(), "failed to create index", e);
}
}
}
}
public boolean allocateUnassigned(RoutingAllocation allocation) {
boolean changed = false;
DiscoveryNodes nodes = allocation.nodes();
RoutingNodes routingNodes = allocation.routingNodes();
// First, handle primaries, they must find a place to be allocated on here
final MetaData metaData = routingNodes.metaData();
RoutingNodes.UnassignedShards unassigned = routingNodes.unassigned();
unassigned.sort(
new PriorityComparator() {
@Override
protected Settings getIndexSettings(String index) {
IndexMetaData indexMetaData = metaData.index(index);
return indexMetaData.getSettings();
}
}); // sort for priority ordering
Iterator<ShardRouting> unassignedIterator = unassigned.iterator();
while (unassignedIterator.hasNext()) {
ShardRouting shard = unassignedIterator.next();
if (!shard.primary()) {
continue;
}
// this is an API allocation, ignore since we know there is no data...
if (!routingNodes
.routingTable()
.index(shard.index())
.shard(shard.id())
.primaryAllocatedPostApi()) {
continue;
}
AsyncShardFetch<TransportNodesListGatewayStartedShards.NodeGatewayStartedShards> fetch =
asyncFetchStarted.get(shard.shardId());
if (fetch == null) {
fetch = new InternalAsyncFetch<>(logger, "shard_started", shard.shardId(), startedAction);
asyncFetchStarted.put(shard.shardId(), fetch);
}
AsyncShardFetch.FetchResult<TransportNodesListGatewayStartedShards.NodeGatewayStartedShards>
shardState = fetch.fetchData(nodes, metaData, allocation.getIgnoreNodes(shard.shardId()));
if (shardState.hasData() == false) {
logger.trace("{}: ignoring allocation, still fetching shard started state", shard);
unassignedIterator.remove();
routingNodes.ignoredUnassigned().add(shard);
continue;
}
shardState.processAllocation(allocation);
IndexMetaData indexMetaData = metaData.index(shard.getIndex());
/**
* Build a map of DiscoveryNodes to shard state number for the given shard. A state of -1
* means the shard does not exist on the node, where any shard state >= 0 is the state version
* of the shard on that node's disk.
*
* <p>A shard on shared storage will return at least shard state 0 for all nodes, indicating
* that the shard can be allocated to any node.
*/
ObjectLongHashMap<DiscoveryNode> nodesState = new ObjectLongHashMap<>();
for (TransportNodesListGatewayStartedShards.NodeGatewayStartedShards nodeShardState :
shardState.getData().values()) {
long version = nodeShardState.version();
// -1 version means it does not exists, which is what the API returns, and what we expect to
logger.trace(
"[{}] on node [{}] has version [{}] of shard",
shard,
nodeShardState.getNode(),
version);
nodesState.put(nodeShardState.getNode(), version);
}
int numberOfAllocationsFound = 0;
long highestVersion = -1;
final Map<DiscoveryNode, Long> nodesWithVersion = Maps.newHashMap();
assert !nodesState.containsKey(null);
final Object[] keys = nodesState.keys;
final long[] values = nodesState.values;
Settings idxSettings = indexMetaData.settings();
for (int i = 0; i < keys.length; i++) {
if (keys[i] == null) {
continue;
}
DiscoveryNode node = (DiscoveryNode) keys[i];
long version = values[i];
// since we don't check in NO allocation, we need to double check here
if (allocation.shouldIgnoreShardForNode(shard.shardId(), node.id())) {
continue;
}
if (recoverOnAnyNode(idxSettings)) {
numberOfAllocationsFound++;
if (version > highestVersion) {
highestVersion = version;
}
// We always put the node without clearing the map
nodesWithVersion.put(node, version);
} else if (version != -1) {
numberOfAllocationsFound++;
// If we've found a new "best" candidate, clear the
// current candidates and add it
if (version > highestVersion) {
highestVersion = version;
nodesWithVersion.clear();
nodesWithVersion.put(node, version);
} else if (version == highestVersion) {
// If the candidate is the same, add it to the
// list, but keep the current candidate
nodesWithVersion.put(node, version);
}
}
}
// Now that we have a map of nodes to versions along with the
// number of allocations found (and not ignored), we need to sort
// it so the node with the highest version is at the beginning
List<DiscoveryNode> nodesWithHighestVersion = Lists.newArrayList();
nodesWithHighestVersion.addAll(nodesWithVersion.keySet());
CollectionUtil.timSort(
nodesWithHighestVersion,
new Comparator<DiscoveryNode>() {
@Override
public int compare(DiscoveryNode o1, DiscoveryNode o2) {
return Long.compare(nodesWithVersion.get(o2), nodesWithVersion.get(o1));
}
});
if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}] found {} allocations of {}, highest version: [{}]",
shard.index(),
shard.id(),
numberOfAllocationsFound,
shard,
highestVersion);
}
if (logger.isTraceEnabled()) {
StringBuilder sb = new StringBuilder("[");
for (DiscoveryNode n : nodesWithHighestVersion) {
sb.append("[");
sb.append(n.getName());
sb.append("]");
sb.append(" -> ");
sb.append(nodesWithVersion.get(n));
sb.append(", ");
}
sb.append("]");
logger.trace("{} candidates for allocation: {}", shard, sb.toString());
}
// check if the counts meets the minimum set
int requiredAllocation = 1;
// if we restore from a repository one copy is more then enough
if (shard.restoreSource() == null) {
try {
String initialShards =
indexMetaData
.settings()
.get(
INDEX_RECOVERY_INITIAL_SHARDS,
settings.get(INDEX_RECOVERY_INITIAL_SHARDS, this.initialShards));
if ("quorum".equals(initialShards)) {
if (indexMetaData.numberOfReplicas() > 1) {
requiredAllocation = ((1 + indexMetaData.numberOfReplicas()) / 2) + 1;
}
} else if ("quorum-1".equals(initialShards) || "half".equals(initialShards)) {
if (indexMetaData.numberOfReplicas() > 2) {
requiredAllocation = ((1 + indexMetaData.numberOfReplicas()) / 2);
}
} else if ("one".equals(initialShards)) {
requiredAllocation = 1;
} else if ("full".equals(initialShards) || "all".equals(initialShards)) {
requiredAllocation = indexMetaData.numberOfReplicas() + 1;
} else if ("full-1".equals(initialShards) || "all-1".equals(initialShards)) {
if (indexMetaData.numberOfReplicas() > 1) {
requiredAllocation = indexMetaData.numberOfReplicas();
}
} else {
requiredAllocation = Integer.parseInt(initialShards);
}
} catch (Exception e) {
logger.warn(
"[{}][{}] failed to derived initial_shards from value {}, ignore allocation for {}",
shard.index(),
shard.id(),
initialShards,
shard);
}
}
// not enough found for this shard, continue...
if (numberOfAllocationsFound < requiredAllocation) {
// if we are restoring this shard we still can allocate
if (shard.restoreSource() == null) {
// we can't really allocate, so ignore it and continue
unassignedIterator.remove();
routingNodes.ignoredUnassigned().add(shard);
if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: not allocating, number_of_allocated_shards_found [{}], required_number [{}]",
shard.index(),
shard.id(),
numberOfAllocationsFound,
requiredAllocation);
}
} else if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: missing local data, will restore from [{}]",
shard.index(),
shard.id(),
shard.restoreSource());
}
continue;
}
Set<DiscoveryNode> throttledNodes = Sets.newHashSet();
Set<DiscoveryNode> noNodes = Sets.newHashSet();
for (DiscoveryNode discoNode : nodesWithHighestVersion) {
RoutingNode node = routingNodes.node(discoNode.id());
if (node == null) {
continue;
}
Decision decision = allocation.deciders().canAllocate(shard, node, allocation);
if (decision.type() == Decision.Type.THROTTLE) {
throttledNodes.add(discoNode);
} else if (decision.type() == Decision.Type.NO) {
noNodes.add(discoNode);
} else {
if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: allocating [{}] to [{}] on primary allocation",
shard.index(),
shard.id(),
shard,
discoNode);
}
// we found a match
changed = true;
// make sure we create one with the version from the recovered state
routingNodes.initialize(new ShardRouting(shard, highestVersion), node.nodeId());
unassignedIterator.remove();
// found a node, so no throttling, no "no", and break out of the loop
throttledNodes.clear();
noNodes.clear();
break;
}
}
if (throttledNodes.isEmpty()) {
// if we have a node that we "can't" allocate to, force allocation, since this is our master
// data!
if (!noNodes.isEmpty()) {
DiscoveryNode discoNode = noNodes.iterator().next();
RoutingNode node = routingNodes.node(discoNode.id());
if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: forcing allocating [{}] to [{}] on primary allocation",
shard.index(),
shard.id(),
shard,
discoNode);
}
// we found a match
changed = true;
// make sure we create one with the version from the recovered state
routingNodes.initialize(new ShardRouting(shard, highestVersion), node.nodeId());
unassignedIterator.remove();
}
} else {
if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: throttling allocation [{}] to [{}] on primary allocation",
shard.index(),
shard.id(),
shard,
throttledNodes);
}
// we are throttling this, but we have enough to allocate to this node, ignore it for now
unassignedIterator.remove();
routingNodes.ignoredUnassigned().add(shard);
}
}
if (!routingNodes.hasUnassigned()) {
return changed;
}
// Now, handle replicas, try to assign them to nodes that are similar to the one the primary was
// allocated on
unassignedIterator = unassigned.iterator();
while (unassignedIterator.hasNext()) {
ShardRouting shard = unassignedIterator.next();
if (shard.primary()) {
continue;
}
// pre-check if it can be allocated to any node that currently exists, so we won't list the
// store for it for nothing
boolean canBeAllocatedToAtLeastOneNode = false;
for (ObjectCursor<DiscoveryNode> cursor : nodes.dataNodes().values()) {
RoutingNode node = routingNodes.node(cursor.value.id());
if (node == null) {
continue;
}
// if we can't allocate it on a node, ignore it, for example, this handles
// cases for only allocating a replica after a primary
Decision decision = allocation.deciders().canAllocate(shard, node, allocation);
if (decision.type() == Decision.Type.YES) {
canBeAllocatedToAtLeastOneNode = true;
break;
}
}
if (!canBeAllocatedToAtLeastOneNode) {
logger.trace("{}: ignoring allocation, can't be allocated on any node", shard);
unassignedIterator.remove();
routingNodes.ignoredUnassigned().add(shard);
continue;
}
AsyncShardFetch<TransportNodesListShardStoreMetaData.NodeStoreFilesMetaData> fetch =
asyncFetchStore.get(shard.shardId());
if (fetch == null) {
fetch = new InternalAsyncFetch<>(logger, "shard_store", shard.shardId(), storeAction);
asyncFetchStore.put(shard.shardId(), fetch);
}
AsyncShardFetch.FetchResult<TransportNodesListShardStoreMetaData.NodeStoreFilesMetaData>
shardStores =
fetch.fetchData(nodes, metaData, allocation.getIgnoreNodes(shard.shardId()));
if (shardStores.hasData() == false) {
logger.trace("{}: ignoring allocation, still fetching shard stores", shard);
unassignedIterator.remove();
routingNodes.ignoredUnassigned().add(shard);
continue; // still fetching
}
shardStores.processAllocation(allocation);
long lastSizeMatched = 0;
DiscoveryNode lastDiscoNodeMatched = null;
RoutingNode lastNodeMatched = null;
boolean hasReplicaData = false;
IndexMetaData indexMetaData = metaData.index(shard.getIndex());
for (Map.Entry<DiscoveryNode, TransportNodesListShardStoreMetaData.NodeStoreFilesMetaData>
nodeStoreEntry : shardStores.getData().entrySet()) {
DiscoveryNode discoNode = nodeStoreEntry.getKey();
TransportNodesListShardStoreMetaData.StoreFilesMetaData storeFilesMetaData =
nodeStoreEntry.getValue().storeFilesMetaData();
logger.trace("{}: checking node [{}]", shard, discoNode);
if (storeFilesMetaData == null) {
// already allocated on that node...
continue;
}
RoutingNode node = routingNodes.node(discoNode.id());
if (node == null) {
continue;
}
// check if we can allocate on that node...
// we only check for NO, since if this node is THROTTLING and it has enough "same data"
// then we will try and assign it next time
Decision decision = allocation.deciders().canAllocate(shard, node, allocation);
if (decision.type() == Decision.Type.NO) {
continue;
}
// if it is already allocated, we can't assign to it...
if (storeFilesMetaData.allocated()) {
continue;
}
if (!shard.primary()) {
hasReplicaData |= storeFilesMetaData.iterator().hasNext();
ShardRouting primaryShard = routingNodes.activePrimary(shard);
if (primaryShard != null) {
assert primaryShard.active();
DiscoveryNode primaryNode = nodes.get(primaryShard.currentNodeId());
if (primaryNode != null) {
TransportNodesListShardStoreMetaData.NodeStoreFilesMetaData primaryNodeFilesStore =
shardStores.getData().get(primaryNode);
if (primaryNodeFilesStore != null) {
TransportNodesListShardStoreMetaData.StoreFilesMetaData primaryNodeStore =
primaryNodeFilesStore.storeFilesMetaData();
if (primaryNodeStore != null && primaryNodeStore.allocated()) {
long sizeMatched = 0;
String primarySyncId = primaryNodeStore.syncId();
String replicaSyncId = storeFilesMetaData.syncId();
// see if we have a sync id we can make use of
if (replicaSyncId != null && replicaSyncId.equals(primarySyncId)) {
logger.trace(
"{}: node [{}] has same sync id {} as primary",
shard,
discoNode.name(),
replicaSyncId);
lastNodeMatched = node;
lastSizeMatched = Long.MAX_VALUE;
lastDiscoNodeMatched = discoNode;
} else {
for (StoreFileMetaData storeFileMetaData : storeFilesMetaData) {
String metaDataFileName = storeFileMetaData.name();
if (primaryNodeStore.fileExists(metaDataFileName)
&& primaryNodeStore.file(metaDataFileName).isSame(storeFileMetaData)) {
sizeMatched += storeFileMetaData.length();
}
}
logger.trace(
"{}: node [{}] has [{}/{}] bytes of re-usable data",
shard,
discoNode.name(),
new ByteSizeValue(sizeMatched),
sizeMatched);
if (sizeMatched > lastSizeMatched) {
lastSizeMatched = sizeMatched;
lastDiscoNodeMatched = discoNode;
lastNodeMatched = node;
}
}
}
}
}
}
}
}
if (lastNodeMatched != null) {
// we only check on THROTTLE since we checked before before on NO
Decision decision = allocation.deciders().canAllocate(shard, lastNodeMatched, allocation);
if (decision.type() == Decision.Type.THROTTLE) {
if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: throttling allocation [{}] to [{}] in order to reuse its unallocated persistent store with total_size [{}]",
shard.index(),
shard.id(),
shard,
lastDiscoNodeMatched,
new ByteSizeValue(lastSizeMatched));
}
// we are throttling this, but we have enough to allocate to this node, ignore it for now
unassignedIterator.remove();
routingNodes.ignoredUnassigned().add(shard);
} else {
if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: allocating [{}] to [{}] in order to reuse its unallocated persistent store with total_size [{}]",
shard.index(),
shard.id(),
shard,
lastDiscoNodeMatched,
new ByteSizeValue(lastSizeMatched));
}
// we found a match
changed = true;
routingNodes.initialize(shard, lastNodeMatched.nodeId());
unassignedIterator.remove();
}
} else if (hasReplicaData == false) {
// if we didn't manage to find *any* data (regardless of matching sizes), check if the
// allocation
// of the replica shard needs to be delayed, and if so, add it to the ignore unassigned list
// note: we only care about replica in delayed allocation, since if we have an unassigned
// primary it
// will anyhow wait to find an existing copy of the shard to be allocated
// note: the other side of the equation is scheduling a reroute in a timely manner, which
// happens in the RoutingService
long delay =
shard
.unassignedInfo()
.getDelayAllocationExpirationIn(settings, indexMetaData.getSettings());
if (delay > 0) {
logger.debug(
"[{}][{}]: delaying allocation of [{}] for [{}]",
shard.index(),
shard.id(),
shard,
TimeValue.timeValueMillis(delay));
/**
* mark it as changed, since we want to kick a publishing to schedule future allocation,
* see {@link
* org.elasticsearch.cluster.routing.RoutingService#clusterChanged(ClusterChangedEvent)}).
*/
changed = true;
unassignedIterator.remove();
routingNodes.ignoredUnassigned().add(shard);
}
}
}
return changed;
}
@Override
public TerminationHandle warmNewReaders(
final IndexShard indexShard,
IndexMetaData indexMetaData,
final WarmerContext context,
ThreadPool threadPool) {
final Loading defaultLoading =
Loading.parse(indexMetaData.settings().get(NORMS_LOADING_KEY), Loading.LAZY);
final MapperService mapperService = indexShard.mapperService();
final ObjectSet<String> warmUp = new ObjectHashSet<>();
for (DocumentMapper docMapper : mapperService.docMappers(false)) {
for (FieldMapper fieldMapper : docMapper.mappers()) {
final String indexName = fieldMapper.fieldType().names().indexName();
Loading normsLoading = fieldMapper.fieldType().normsLoading();
if (normsLoading == null) {
normsLoading = defaultLoading;
}
if (fieldMapper.fieldType().indexOptions() != IndexOptions.NONE
&& !fieldMapper.fieldType().omitNorms()
&& normsLoading == Loading.EAGER) {
warmUp.add(indexName);
}
}
}
final CountDownLatch latch = new CountDownLatch(1);
// Norms loading may be I/O intensive but is not CPU intensive, so we execute it in a single
// task
threadPool
.executor(executor())
.execute(
new Runnable() {
@Override
public void run() {
try {
for (ObjectCursor<String> stringObjectCursor : warmUp) {
final String indexName = stringObjectCursor.value;
final long start = System.nanoTime();
for (final LeafReaderContext ctx : context.searcher().reader().leaves()) {
final NumericDocValues values = ctx.reader().getNormValues(indexName);
if (values != null) {
values.get(0);
}
}
if (indexShard.warmerService().logger().isTraceEnabled()) {
indexShard
.warmerService()
.logger()
.trace(
"warmed norms for [{}], took [{}]",
indexName,
TimeValue.timeValueNanos(System.nanoTime() - start));
}
}
} catch (Throwable t) {
indexShard.warmerService().logger().warn("failed to warm-up norms", t);
} finally {
latch.countDown();
}
}
});
return new TerminationHandle() {
@Override
public void awaitTermination() throws InterruptedException {
latch.await();
}
};
}
@Test
public void testSimpleJsonFromAndTo() throws IOException {
MetaData metaData =
newMetaDataBuilder()
.maxNumberOfShardsPerNode(2)
.put(newIndexMetaDataBuilder("test1").numberOfShards(1).numberOfReplicas(2))
.put(
newIndexMetaDataBuilder("test2")
.settings(settingsBuilder().put("setting1", "value1").put("setting2", "value2"))
.numberOfShards(2)
.numberOfReplicas(3))
.put(
newIndexMetaDataBuilder("test3")
.numberOfShards(1)
.numberOfReplicas(2)
.putMapping("mapping1", MAPPING_SOURCE1))
.put(
newIndexMetaDataBuilder("test4")
.settings(settingsBuilder().put("setting1", "value1").put("setting2", "value2"))
.numberOfShards(1)
.numberOfReplicas(2)
.putMapping("mapping1", MAPPING_SOURCE1)
.putMapping("mapping2", MAPPING_SOURCE2))
.build();
String metaDataSource = MetaData.Builder.toJson(metaData);
System.out.println("ToJson: " + metaDataSource);
MetaData parsedMetaData =
MetaData.Builder.fromJson(
Jackson.defaultJsonFactory().createJsonParser(metaDataSource), null);
assertThat(parsedMetaData.maxNumberOfShardsPerNode(), equalTo(2));
IndexMetaData indexMetaData = metaData.index("test1");
assertThat(indexMetaData.numberOfShards(), equalTo(1));
assertThat(indexMetaData.numberOfReplicas(), equalTo(2));
assertThat(indexMetaData.settings().getAsMap().size(), equalTo(2));
assertThat(indexMetaData.mappings().size(), equalTo(0));
indexMetaData = metaData.index("test2");
assertThat(indexMetaData.numberOfShards(), equalTo(2));
assertThat(indexMetaData.numberOfReplicas(), equalTo(3));
assertThat(indexMetaData.settings().getAsMap().size(), equalTo(4));
assertThat(indexMetaData.settings().get("setting1"), equalTo("value1"));
assertThat(indexMetaData.settings().get("setting2"), equalTo("value2"));
assertThat(indexMetaData.mappings().size(), equalTo(0));
indexMetaData = metaData.index("test3");
assertThat(indexMetaData.numberOfShards(), equalTo(1));
assertThat(indexMetaData.numberOfReplicas(), equalTo(2));
assertThat(indexMetaData.settings().getAsMap().size(), equalTo(2));
assertThat(indexMetaData.mappings().size(), equalTo(1));
assertThat(indexMetaData.mappings().get("mapping1"), equalTo(MAPPING_SOURCE1));
indexMetaData = metaData.index("test4");
assertThat(indexMetaData.numberOfShards(), equalTo(1));
assertThat(indexMetaData.numberOfReplicas(), equalTo(2));
assertThat(indexMetaData.settings().getAsMap().size(), equalTo(4));
assertThat(indexMetaData.settings().get("setting1"), equalTo("value1"));
assertThat(indexMetaData.settings().get("setting2"), equalTo("value2"));
assertThat(indexMetaData.mappings().size(), equalTo(2));
assertThat(indexMetaData.mappings().get("mapping1"), equalTo(MAPPING_SOURCE1));
assertThat(indexMetaData.mappings().get("mapping2"), equalTo(MAPPING_SOURCE2));
}
public boolean allocateUnassigned(RoutingAllocation allocation) {
boolean changed = false;
DiscoveryNodes nodes = allocation.nodes();
RoutingNodes routingNodes = allocation.routingNodes();
// First, handle primaries, they must find a place to be allocated on here
Iterator<MutableShardRouting> unassignedIterator = routingNodes.unassigned().iterator();
while (unassignedIterator.hasNext()) {
MutableShardRouting shard = unassignedIterator.next();
if (!shard.primary()) {
continue;
}
// this is an API allocation, ignore since we know there is no data...
if (!routingNodes
.routingTable()
.index(shard.index())
.shard(shard.id())
.primaryAllocatedPostApi()) {
continue;
}
ObjectLongOpenHashMap<DiscoveryNode> nodesState = buildShardStates(nodes, shard);
int numberOfAllocationsFound = 0;
long highestVersion = -1;
Set<DiscoveryNode> nodesWithHighestVersion = Sets.newHashSet();
final boolean[] states = nodesState.allocated;
final Object[] keys = nodesState.keys;
final long[] values = nodesState.values;
for (int i = 0; i < states.length; i++) {
if (!states[i]) {
continue;
}
DiscoveryNode node = (DiscoveryNode) keys[i];
long version = values[i];
// since we don't check in NO allocation, we need to double check here
if (allocation.shouldIgnoreShardForNode(shard.shardId(), node.id())) {
continue;
}
if (version != -1) {
numberOfAllocationsFound++;
if (highestVersion == -1) {
nodesWithHighestVersion.add(node);
highestVersion = version;
} else {
if (version > highestVersion) {
nodesWithHighestVersion.clear();
nodesWithHighestVersion.add(node);
highestVersion = version;
} else if (version == highestVersion) {
nodesWithHighestVersion.add(node);
}
}
}
}
// check if the counts meets the minimum set
int requiredAllocation = 1;
// if we restore from a repository one copy is more then enough
if (shard.restoreSource() == null) {
try {
IndexMetaData indexMetaData = routingNodes.metaData().index(shard.index());
String initialShards =
indexMetaData
.settings()
.get(
INDEX_RECOVERY_INITIAL_SHARDS,
settings.get(INDEX_RECOVERY_INITIAL_SHARDS, this.initialShards));
if ("quorum".equals(initialShards)) {
if (indexMetaData.numberOfReplicas() > 1) {
requiredAllocation = ((1 + indexMetaData.numberOfReplicas()) / 2) + 1;
}
} else if ("quorum-1".equals(initialShards) || "half".equals(initialShards)) {
if (indexMetaData.numberOfReplicas() > 2) {
requiredAllocation = ((1 + indexMetaData.numberOfReplicas()) / 2);
}
} else if ("one".equals(initialShards)) {
requiredAllocation = 1;
} else if ("full".equals(initialShards) || "all".equals(initialShards)) {
requiredAllocation = indexMetaData.numberOfReplicas() + 1;
} else if ("full-1".equals(initialShards) || "all-1".equals(initialShards)) {
if (indexMetaData.numberOfReplicas() > 1) {
requiredAllocation = indexMetaData.numberOfReplicas();
}
} else {
requiredAllocation = Integer.parseInt(initialShards);
}
} catch (Exception e) {
logger.warn(
"[{}][{}] failed to derived initial_shards from value {}, ignore allocation for {}",
shard.index(),
shard.id(),
initialShards,
shard);
}
}
// not enough found for this shard, continue...
if (numberOfAllocationsFound < requiredAllocation) {
// if we are restoring this shard we still can allocate
if (shard.restoreSource() == null) {
// we can't really allocate, so ignore it and continue
unassignedIterator.remove();
routingNodes.ignoredUnassigned().add(shard);
if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: not allocating, number_of_allocated_shards_found [{}], required_number [{}]",
shard.index(),
shard.id(),
numberOfAllocationsFound,
requiredAllocation);
}
} else if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: missing local data, will restore from [{}]",
shard.index(),
shard.id(),
shard.restoreSource());
}
continue;
}
Set<DiscoveryNode> throttledNodes = Sets.newHashSet();
Set<DiscoveryNode> noNodes = Sets.newHashSet();
for (DiscoveryNode discoNode : nodesWithHighestVersion) {
RoutingNode node = routingNodes.node(discoNode.id());
if (node == null) {
continue;
}
Decision decision = allocation.deciders().canAllocate(shard, node, allocation);
if (decision.type() == Decision.Type.THROTTLE) {
throttledNodes.add(discoNode);
} else if (decision.type() == Decision.Type.NO) {
noNodes.add(discoNode);
} else {
if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: allocating [{}] to [{}] on primary allocation",
shard.index(),
shard.id(),
shard,
discoNode);
}
// we found a match
changed = true;
// make sure we create one with the version from the recovered state
allocation
.routingNodes()
.assign(new MutableShardRouting(shard, highestVersion), node.nodeId());
unassignedIterator.remove();
// found a node, so no throttling, no "no", and break out of the loop
throttledNodes.clear();
noNodes.clear();
break;
}
}
if (throttledNodes.isEmpty()) {
// if we have a node that we "can't" allocate to, force allocation, since this is our master
// data!
if (!noNodes.isEmpty()) {
DiscoveryNode discoNode = noNodes.iterator().next();
RoutingNode node = routingNodes.node(discoNode.id());
if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: forcing allocating [{}] to [{}] on primary allocation",
shard.index(),
shard.id(),
shard,
discoNode);
}
// we found a match
changed = true;
// make sure we create one with the version from the recovered state
allocation
.routingNodes()
.assign(new MutableShardRouting(shard, highestVersion), node.nodeId());
unassignedIterator.remove();
}
} else {
if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: throttling allocation [{}] to [{}] on primary allocation",
shard.index(),
shard.id(),
shard,
throttledNodes);
}
// we are throttling this, but we have enough to allocate to this node, ignore it for now
unassignedIterator.remove();
routingNodes.ignoredUnassigned().add(shard);
}
}
if (!routingNodes.hasUnassigned()) {
return changed;
}
// Now, handle replicas, try to assign them to nodes that are similar to the one the primary was
// allocated on
unassignedIterator = routingNodes.unassigned().iterator();
while (unassignedIterator.hasNext()) {
MutableShardRouting shard = unassignedIterator.next();
// pre-check if it can be allocated to any node that currently exists, so we won't list the
// store for it for nothing
boolean canBeAllocatedToAtLeastOneNode = false;
for (ObjectCursor<DiscoveryNode> cursor : nodes.dataNodes().values()) {
RoutingNode node = routingNodes.node(cursor.value.id());
if (node == null) {
continue;
}
// if we can't allocate it on a node, ignore it, for example, this handles
// cases for only allocating a replica after a primary
Decision decision = allocation.deciders().canAllocate(shard, node, allocation);
if (decision.type() == Decision.Type.YES) {
canBeAllocatedToAtLeastOneNode = true;
break;
}
}
if (!canBeAllocatedToAtLeastOneNode) {
continue;
}
Map<DiscoveryNode, TransportNodesListShardStoreMetaData.StoreFilesMetaData> shardStores =
buildShardStores(nodes, shard);
long lastSizeMatched = 0;
DiscoveryNode lastDiscoNodeMatched = null;
RoutingNode lastNodeMatched = null;
for (Map.Entry<DiscoveryNode, TransportNodesListShardStoreMetaData.StoreFilesMetaData>
nodeStoreEntry : shardStores.entrySet()) {
DiscoveryNode discoNode = nodeStoreEntry.getKey();
TransportNodesListShardStoreMetaData.StoreFilesMetaData storeFilesMetaData =
nodeStoreEntry.getValue();
logger.trace("{}: checking node [{}]", shard, discoNode);
if (storeFilesMetaData == null) {
// already allocated on that node...
continue;
}
RoutingNode node = routingNodes.node(discoNode.id());
if (node == null) {
continue;
}
// check if we can allocate on that node...
// we only check for NO, since if this node is THROTTLING and it has enough "same data"
// then we will try and assign it next time
Decision decision = allocation.deciders().canAllocate(shard, node, allocation);
if (decision.type() == Decision.Type.NO) {
continue;
}
// if it is already allocated, we can't assign to it...
if (storeFilesMetaData.allocated()) {
continue;
}
if (!shard.primary()) {
MutableShardRouting primaryShard = routingNodes.activePrimary(shard);
if (primaryShard != null) {
assert primaryShard.active();
DiscoveryNode primaryNode = nodes.get(primaryShard.currentNodeId());
if (primaryNode != null) {
TransportNodesListShardStoreMetaData.StoreFilesMetaData primaryNodeStore =
shardStores.get(primaryNode);
if (primaryNodeStore != null && primaryNodeStore.allocated()) {
long sizeMatched = 0;
for (StoreFileMetaData storeFileMetaData : storeFilesMetaData) {
if (primaryNodeStore.fileExists(storeFileMetaData.name())
&& primaryNodeStore
.file(storeFileMetaData.name())
.isSame(storeFileMetaData)) {
sizeMatched += storeFileMetaData.length();
}
}
logger.trace(
"{}: node [{}] has [{}/{}] bytes of re-usable data",
shard,
discoNode.name(),
new ByteSizeValue(sizeMatched),
sizeMatched);
if (sizeMatched > lastSizeMatched) {
lastSizeMatched = sizeMatched;
lastDiscoNodeMatched = discoNode;
lastNodeMatched = node;
}
}
}
}
}
}
if (lastNodeMatched != null) {
// we only check on THROTTLE since we checked before before on NO
Decision decision = allocation.deciders().canAllocate(shard, lastNodeMatched, allocation);
if (decision.type() == Decision.Type.THROTTLE) {
if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: throttling allocation [{}] to [{}] in order to reuse its unallocated persistent store with total_size [{}]",
shard.index(),
shard.id(),
shard,
lastDiscoNodeMatched,
new ByteSizeValue(lastSizeMatched));
}
// we are throttling this, but we have enough to allocate to this node, ignore it for now
unassignedIterator.remove();
routingNodes.ignoredUnassigned().add(shard);
} else {
if (logger.isDebugEnabled()) {
logger.debug(
"[{}][{}]: allocating [{}] to [{}] in order to reuse its unallocated persistent store with total_size [{}]",
shard.index(),
shard.id(),
shard,
lastDiscoNodeMatched,
new ByteSizeValue(lastSizeMatched));
}
// we found a match
changed = true;
allocation.routingNodes().assign(shard, lastNodeMatched.nodeId());
unassignedIterator.remove();
}
}
}
return changed;
}
private void pre019Upgrade() throws Exception {
long index = -1;
File metaDataFile = null;
MetaData metaData = null;
long version = -1;
for (File dataLocation : nodeEnv.nodeDataLocations()) {
File stateLocation = new File(dataLocation, "_state");
if (!stateLocation.exists()) {
continue;
}
File[] stateFiles = stateLocation.listFiles();
if (stateFiles == null) {
continue;
}
for (File stateFile : stateFiles) {
if (logger.isTraceEnabled()) {
logger.trace("[upgrade]: processing [" + stateFile.getName() + "]");
}
String name = stateFile.getName();
if (!name.startsWith("metadata-")) {
continue;
}
long fileIndex = Long.parseLong(name.substring(name.indexOf('-') + 1));
if (fileIndex >= index) {
// try and read the meta data
try {
byte[] data = Streams.copyToByteArray(new FileInputStream(stateFile));
if (data.length == 0) {
continue;
}
XContentParser parser = XContentHelper.createParser(data, 0, data.length);
try {
String currentFieldName = null;
XContentParser.Token token = parser.nextToken();
if (token != null) {
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
if ("meta-data".equals(currentFieldName)) {
metaData = MetaData.Builder.fromXContent(parser);
}
} else if (token.isValue()) {
if ("version".equals(currentFieldName)) {
version = parser.longValue();
}
}
}
}
} finally {
parser.close();
}
index = fileIndex;
metaDataFile = stateFile;
} catch (IOException e) {
logger.warn("failed to read pre 0.19 state from [" + name + "], ignoring...", e);
}
}
}
}
if (metaData == null) {
return;
}
logger.info(
"found old metadata state, loading metadata from [{}] and converting to new metadata location and strucutre...",
metaDataFile.getAbsolutePath());
writeGlobalState(
"upgrade", MetaData.builder().metaData(metaData).version(version).build(), null);
for (IndexMetaData indexMetaData : metaData) {
IndexMetaData.Builder indexMetaDataBuilder =
IndexMetaData.newIndexMetaDataBuilder(indexMetaData).version(version);
// set the created version to 0.18
indexMetaDataBuilder.settings(
ImmutableSettings.settingsBuilder()
.put(indexMetaData.settings())
.put(IndexMetaData.SETTING_VERSION_CREATED, Version.V_0_18_0));
writeIndex("upgrade", indexMetaDataBuilder.build(), null);
}
// rename shards state to backup state
File backupFile = new File(metaDataFile.getParentFile(), "backup-" + metaDataFile.getName());
if (!metaDataFile.renameTo(backupFile)) {
throw new IOException(
"failed to rename old state to backup state [" + metaDataFile.getAbsolutePath() + "]");
}
// delete all other shards state files
for (File dataLocation : nodeEnv.nodeDataLocations()) {
File stateLocation = new File(dataLocation, "_state");
if (!stateLocation.exists()) {
continue;
}
File[] stateFiles = stateLocation.listFiles();
if (stateFiles == null) {
continue;
}
for (File stateFile : stateFiles) {
String name = stateFile.getName();
if (!name.startsWith("metadata-")) {
continue;
}
stateFile.delete();
}
}
logger.info(
"conversion to new metadata location and format done, backup create at [{}]",
backupFile.getAbsolutePath());
}